EP3330472B1 - Carousel door arrangement and method for compensating for a non-uniform external force - Google Patents

Description

The present invention relates to a revolving door arrangement and a method for compensating for a force fluctuation which acts non-uniformly on a door leaf of a revolving door arrangement as a function of a rotational position.

Revolving door arrangements are known which have an asynchronous motor with a downstream transmission. A multi-stage gear (e.g. worm gear, toothed belt stages) is typically used here. To drive the turnstile of the revolving door arrangement, a multi-tooth shaft is used, which is firmly connected to the drive unit. This drive system is first built into the ceiling structure. Then the turnstile including the door wing is installed.

EP 3 034 759 A1 relates to a method for controlling a revolving door, in which the motor is arranged coaxially with the turnstile.

EP 3 034 759 A1 discloses all features of the preamble of claims 1 and 7.

US 5,647,173 discloses an operating method for a revolving door in which a user pressing on the door leaf is assisted in operating the revolving door by a support force which is generated by means of an electric motor.

US 5,647,173 discloses all features of the preamble of claims 1 and 7.

A disadvantage of the designs known in the prior art is that the door leaves experience a non-uniform external frictional force as they move through the drum / post. This leads to a non-uniform moment which the electric drive has to apply over the rotational positions. The result is fluctuations in speed, which result in less comfort for the user. In addition, operating noise of the revolving door assembly appear irregular, which affects the quality impression on the user.

It is an object of the present invention to provide a revolving door arrangement and a method which overcome the aforementioned disadvantages.

The above object is achieved by the features of the independent claims. The dependent claims have advantageous refinements of the invention.

The object is thus achieved by a method for compensating a force fluctuation which acts non-uniformly on a door leaf of a revolving door arrangement as a function of a rotational position. The revolving door arrangement comprises a turnstile carrying the door leaf, an evaluation unit and an electric drive with a stator and a rotor. The turnstile comprises at least two door leaves and is rotatably supported about an axis of rotation, an axial direction being defined along the axis of rotation and a radial direction perpendicular to the axial direction. The electric drive can be designed, for example, as an electronically commutated multi-pole motor with a stator comprising a stator laminated core and several coils, and a rotor comprising a rotor laminated core and several permanent magnets. The rotor can be arranged coaxially to the axis of rotation and connected to the turnstile for direct, gearless drive. An evaluation unit is set up to carry out logical steps for the operation of the revolving door arrangement. The evaluation unit can be understood as an electronic control unit. It can be a programmable processor, a microcontroller or the like. exhibit. The hardware described above is operated according to the invention as follows. First, the turnstile is rotated (in a learning trip). This can be done by means of the drive. The fluctuation in force and / or fluctuation in rotational speed and / or fluctuation in torque acting externally on the door leaf is determined as a function of the rotational position. For example, a force sensor, a current sensor or a high-resolution position sensor can be used to determine the non-uniformity of the above-mentioned operating variables over the rotational positions. A signal can then be made from the determined nonuniformities of the operating parameters can be determined which is suitable for compensating the irregularities. If the turnstile is operated in a regulated mode during the learn run, force fluctuations and / or torque fluctuations can be determined, but only slight fluctuations in rotational speed. In this case, the values actually generated by the control method are suitable on the basis of the periodicity of the force fluctuations / torque fluctuations for applying a corresponding precontrol, which will be discussed further below. To compensate for the force / rotational speed and / or torque fluctuation, the stator is controlled after the end of the learning run with an electrical signal which is predefined on the basis of the fluctuation variables determined as a function of the rotational position. The predefined electrical signal was therefore created on the basis of the knowledge of the fluctuation in force during the learning trip and was dimensioned such that the fluctuations in force or fluctuations in torque do not manifest themselves in a fluctuation in the rotational speed over the rotary positions of the turnstile. This does not exclude that a compensation carried out according to the invention is again subjected to a learning trip according to the invention, in order to be able to compensate for the possibly remaining speed fluctuations even better afterwards and / or worn out irregularities (e.g. due to changed friction parameters, worn brushes) the door leaves or the like) to recognize and compensate. As a result, a revolving door arrangement designed according to the invention has a uniform rotational movement and a smooth sound image.

The electrical signal can be predefined or pre-controlled, for example, with regard to a voltage and / or a current and / or an amplitude and / or a frequency and / or a pulse-pause ratio (in the case of pulse width modulation, PWM). For example, an electrical DC voltage can be used as the operating voltage by means of a Evaluation unit are chopped into suitable pulses, which transmit an electrical signal suitable for compensating the fluctuation in force to the electrical drive. This does not exclude that further signal processing steps are carried out between the evaluation unit and the final stage of the drive.

A position sensor arranged in the drive is preferably used, which gives the evaluation unit information about the current position of the rotor / turnstile. For example, Hall sensors can be arranged in the stator of the drive, which receive the magnetic field of the rotor and forward corresponding electrical signals to an evaluation unit. Using a reference, the evaluation unit can determine the absolute and / or the relative position of the turnstile and assign the fluctuations in force as well as the parameters of the predefined electrical signal to the rotational positions of the turnstile.

The data relating to the force fluctuation / rotational speed fluctuation / torque fluctuation (depending on the selected control method) determined during the learning trip can represent a current consumption of the electrical drive and / or an electrical voltage at the connections of the stator of the electrical drive via the rotational positions and / or rotational positions of the Mark the turnstile over time. The electrical voltage or the electrical current, which were used during the learning run in a regulated operation in order to compensate for the fluctuations in force / fluctuations in rotational speed, can be plotted over the rotary positions of the turnstile or over the time of a complete turn of the turnstile. Since every control system, however good, respects the laws of causality, the electrical quantities voltage / current fed in to compensate for the fluctuation in force become temporal and spatial lagging behind the positions where they are actually required. They can therefore preferably be assigned to the rotary positions of the turnstile, so that an even more suitable electrical signal (pilot control signal, pilot control table) can then be predefined by shifting relative to the rotary positions in the direction of previous rotary positions. Depending on the resolution of the rotational position detection, the values determined by the control can therefore be assigned to a previous rotation position closest to one another or to a rotation position preceding by several rotation positions. The shift range of the control values depends in particular on the time offset of the controller used, which results between the input signal and the corresponding output signal.

Post crossings are also taught in during the learning trip according to the invention. When the brushes of the door leaves pass over the vertical posts of the drum walls, the door usually brakes slightly. This affects the smooth running of the revolving door. An object of the present invention is to improve the synchronism properties of revolving doors. An embodiment of a solution according to the invention is reproduced in other words below: The method is used to control a revolving door system which has a revolving door with a turnstile and at least one control. The turnstile is operatively connected to at least one electric drive. The controller records the motor current and / or the motor voltage of the electric drive during a learn run. The controller also detects position information that represents the angular position of the rotor of the electric drive. A control signal is then generated by the control for accelerating the revolving door by means of the electric drive to a constant angular velocity. After the constant angular velocity has been reached, a change in the motor torque or the motor voltage with the Corresponding position information is stored, in which a change in the motor current and / or the motor voltage has occurred. Information about a change in the motor current and / or a motor voltage with corresponding position information, in which a change in the motor current or the motor voltage is to be carried out, can be stored in the control. For this purpose, position information can first be recorded, the motor current or the motor voltage can be adjusted by the amount of the stored change in the motor current and / or the change in the stored motor voltage before or when the stored position information is passed over next time, and the motor current or the Motor voltage by the amount of the stored change in the motor current or the change in the stored motor voltage after driving over the stored position information.

According to a second aspect of the present invention, a revolving door arrangement is proposed which has a turnstile which has at least one door leaf, preferably two, three, four, five or more door leaves. Furthermore, an evaluation unit and an electric drive with a stator and a rotor for rotating the turnstile are provided. The rotor can be arranged coaxially with an axis of rotation of the turnstile and can be connected to the turnstile for direct, gearless drive. The evaluation unit is set up to carry out the steps of a method according to the invention, as described in detail above in connection with the first-mentioned aspect of the invention. The features, combinations of features and the advantages resulting from these correspond so clearly to those of the first-mentioned aspect of the invention that reference is made to the above statements in order to avoid repetitions.

The stator of the electric drive can be provided for fixed assembly. In particular, it can be set up to be fastened to a ceiling (for example a suspended ceiling and / or a concrete ceiling). The stator can be arranged on the axis of the door cross such that, together with the rotor, it forms an air gap arranged coaxially to the axis of the turnstile. In other words, no gear is preferably provided between the drive and the turnstile. The result is a play-free kinematic relationship between the drive and the turnstile.

The revolving door arrangement can furthermore have a frequency converter, which preferably also has the evaluation unit and an output stage for controlling the electric drive. The evaluation unit is set up to implement a parameter of an electrical signal for controlling the electrical drive by means of pulse width modulation. The frequency converter is set up to control the output stage with a multi-phase representation of the electrical signal as a function of the pulse-width-modulated signal. In other words, a power signal can be generated by means of the output stage, which enables the drive to be energized as a function of an output signal from the evaluation unit. The components required for operating the revolving door arrangement according to the invention can thus be matched to one another in the best possible way. They can preferably be arranged in a common housing. The housing can include the frequency converter, the output stage and the evaluation unit. The housing can have a (in particular common) connection for an operating voltage of the aforementioned components. In particular, the drive can also be supplied with electrical energy via the operating voltage.

The evaluation unit can be set up, based on a position sensor in the electric drive, a current speed, a to determine the current position and / or a current speed of the turnstile. The position sensor can have at least one, preferably two, in particular three or more Hall sensors. The position sensor system can also have an encoder on the rotor of the drive. This can be used as part of a learning trip to identify an absolute turnstile position. It can also have a magnetic mode of operation (for example a permanent magnet in conjunction with a Hall sensor). The Hall sensors can in particular be arranged in the stator of the electric drive and can be set up to generate a signal as a function of a magnetic alternating field generated by means of the rotor, with the aid of which the positioning, the speed and / or the current speed of the rotor (and thus of the turnstile) are to be determined. The electric drive can be designed as a brushless motor. The result is a highly efficient electrical drive and an exact positioning of the rotor by means of the method according to the invention.

Fig. 1

eine Karusselltüranordnung gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;

Fig. 2

die Karusselltüranordnung in einer Schnittdarstellung;

Fig. 3

wesentliche Bestandteile der Karusselltüranordnung in einer Explosionsdarstellung;

Fig. 4

ein Schema zur Erzeugung einer Vorsteuertabelle bzw. zur Erzeugung eines vordefinierten elektrischen Signals aus Regelwerten;

Fig. 5

ein Flussdiagramm veranschaulichend Schritte eines Ausführungsbeispiels eines erfindungsgemäßen Verfahrens; und

Fig. 6

ein Blockschaltbild eines Ausführungsbeispiels einer erfindungsgemäßen Karusselltüranordnung.

The invention is explained in detail below with reference to the accompanying drawings. Show:

Fig. 1

a revolving door arrangement according to an embodiment of the present invention;

Fig. 2

the revolving door arrangement in a sectional view;

Fig. 3

essential components of the revolving door arrangement in an exploded view;

Fig. 4

a scheme for generating a pilot table or for generating a predefined electrical signal from control values;

Fig. 5

a flow chart illustrating steps of an embodiment of a method according to the invention; and

Fig. 6

a block diagram of an embodiment of a revolving door arrangement according to the invention.

Fig. 1 shows an isometric view of a revolving door arrangement 1. The revolving door arrangement 1 comprises a turnstile 2. This turnstile 2 has four door leaves 3. The door leaves 3 are each angled at 90 ° to one another. The turnstile 2 is arranged rotatably about an axis of rotation 4. The axis of rotation 4 extends in the axial direction 5. A radial direction 6 is defined perpendicular to the axial direction 5. A circumferential direction 7 is defined around the axial direction 5.

A drive 8 is arranged on the turnstile 2. This drive 8 is designed as an electronically commutated multi-pole motor. The rotor 17 (s. Fig. 2 ) This drive 8 is connected coaxially to the axis of rotation 4 with the turnstile 2. As a result, the drive 8 enables a direct and gearless drive of the turnstile 2.

Fig. 2 shows a section through the revolving door arrangement 1. Of the revolving door arrangement 1, only the drive 8 is shown.

The drive 8 comprises a stator 10 and the rotor 17 Fig. 1 shows, the drive 8 is arranged above the turnstile 2. The rotor 17 is located between the turnstile 2 and the stator 10.

Fig. 2 shows a non-rotatably connected to the rotor 17 connecting element, designed as a multi-tooth shaft. The turnstile 2 is connected to the rotor 17 in a rotationally fixed manner via this connecting element.

The stator 10 comprises a stator disk 12. A stator laminated core 11 is arranged on the outer circumference of the stator disk 12. The individual coils 13 of the stator 10 are placed on this stator laminated core 11.

Each coil comprises a coil body 14, for example made of plastic. The windings 15 of the individual coil 13 are located on this coil former 14.

The rotor 17 comprises a rotor disk 43. This rotor disk 43 lies opposite the stator disk 12. The stator laminated core 11 with the coils 13 is arranged between the two disks 43, 12. A rotor laminated core 18 is arranged on the outer circumference of the rotor disk 43. A plurality of permanent magnets 19 are arranged radially within the rotor lamination stack 18 on the rotor lamination stack 18.

In the area of the axis of rotation 4, an axial bearing 20 and a radial bearing 21 are formed between the stator disc 12 and the rotor disc 43. In the exemplary embodiment shown, the axial bearing 20 and the radial bearing 21 are designed as slide bearings.

In Fig. 2 Furthermore, an embodiment of a frequency converter 25 is shown, which has a connection 27 for an operating voltage. An evaluation unit 9, a motor IC 36 (integrated circuit for drive control) and an output stage 26 for controlling the drive 8 are provided within the frequency converter 25. The evaluation unit 9, the motor IC 36 and the output stage 26 are in connection with Fig. 4 discussed in more detail.

The in Fig. 1 The drive 8 shown is part of the revolving door arrangement 1. This revolving door arrangement 1 is in section in FIG Fig. 2 shown. The revolving door arrangement 1 includes an adapter unit in addition to the drive 8 101. This adapter unit 101 is used for mounting the drive 8 on a superordinate ceiling structure 103. In the example shown, the ceiling structure 103 comprises two parallel horizontal beams.

The adapter unit 101 comprises at least one ceiling fastening element 102. This is designed here as a right-angled angle. The ceiling fastening element 102 is fastened in the profiles of the ceiling structure 103 via a screw connection and corresponding slot nuts.

The adapter unit 101 further comprises an adapter plate 107. The ceiling fastening element 102 is firmly connected, for example welded, to this adapter plate 107.

A plurality of fixing elements 104 of the adapter unit 101 are fastened to the circumference of the adapter plate 107. These fixing elements 104 each serve to fasten a suspended ceiling element 105.

The adapter unit 101 further comprises at least one drive fastening element 106. This is designed here as a screw connection and is used to fasten the drive 8 to the adapter unit 101, in particular to the adapter plate 107.

Fig. 2 and 3rd show preferred pre-fixing units 110. These pre-fixing units 110 here comprise a snap hook. This makes it possible to lift the drive 8 from below onto the adapter plate 107. The pre-fixing units 110 snap into place and the drive 8 is pre-fixed to the adapter unit 110. The drive fastening elements 106, which are designed as screw connections, can then be placed.

The illustration also shows in Fig. 3 a preferred connection recess 111 in the adapter plate 107. About this Connection recess 111 is an electrical contact, in particular one or two plugs, accessible from above within the drive 8.

The drive 8 has position sensors 28 in the form of Hall sensors which are arranged on the circumference of the stator. The position sensors 28 are set up to identify position sensors (not shown) on the rotor (not shown) and to report a rotational position of the drive 8 to the evaluation unit (not shown).

Fig. 4 shows a table in which exemplary rotational positions 32 are identified by unitless, ascending numbers. In the line below, control values 33 are shown, which were used in a learning trip to generate a uniform speed behavior of the revolving door arrangement. In the first three rotary positions 32 (1, 2, 3), identical control values 33 (5, 5.5) were used. A force fluctuation in the area of the next higher rotational positions 32 (4, 5) leads to increased control values 33 (7, 6). With regard to higher rotational positions 32 (6, 7), the control values 33 (5.5) used at the beginning were used again. To generate suitable pilot control values 34, the control values 33 (7, 6) in the table shown have been shifted in the direction of previous rotational positions 32 (3, 4). In this way, when the electric drive of a revolving door arrangement according to the invention is actuated, it is avoided that speed fluctuations are actually applied too late in the course of regulation. In other words, the electrical signals required for the compensation are placed on the stator of the electric drive in terms of time and in terms of their rotational positions, in order to produce the best possible compensation for the periodic external force fluctuations.

Figure 5 shows a flow diagram illustrating steps of an exemplary embodiment of a method according to the invention for compensating a force fluctuation which acts non-uniformly on a door leaf of a revolving door arrangement as a function of a rotational position. In step S100, the turnstile of the revolving door arrangement is rotated in the course of a learning trip. In step S200, the force fluctuation acting externally on the door leaf is determined by a rotation speed fluctuation. This does not exclude that a control process tries to compensate for the fluctuating rotational speed. Only one parameter for the fluctuation in force / fluctuation in rotational speed has to be recorded in the course of the learn run and saved as a function of the rotational position. In step S300, a large number of values obtained by a control system for compensating the fluctuation in force or fluctuation in rotational speed are applied for a control signal above the rotary positions of the turnstile. In particular, discrete rotational positions can be provided with a respective control value and stored. In step S400, the values are shifted relative to the associated rotational positions in order to generate the electrical signal, as a result of which a pilot control table or a pilot control signal are generated. In this case, the electrical values generated during the control are assigned to an immediately preceding rotational position in order to generate the earliest possible compensation for the periodically occurring fluctuations in force. Then, in step S500, the stator of the electric drive is controlled with an electrical signal predefined on the basis of the pilot control table in order to compensate for the fluctuations in the speed of rotation of the turnstile.

Fig. 6 shows a block diagram of an embodiment of a revolving door arrangement according to the invention. An operating voltage of 24 V is applied to the electrical system via a connection 27 connected. A DC / DC converter 41 feeds a microcontroller as an evaluation unit 9 with a voltage of 5V or optionally 3.3V. In addition, the operating voltage is applied via a diode 42 to a motor IC 36 and an output stage 26 for energizing the stator 10. The motor voltage can be in a predefined range, for example. The microcontroller can have further input variables (not shown). E.g. the Hall sensors can be connected to the microcontroller to determine a rotational position of the drive. The microcontroller supplies pulse-width-modulated signals for controlling the output stage to the motor IC 36. These also have a level of 5V or 3.3V. The pulse width modulated signals are used to control the three phases U, V, W of the stator 10 z. B. with 6 signals U_H, U_L, V_H, V_L, W_H, W_L (H - High, L - Low). In addition, a control line 39 and an error reporting line 40 are provided between the microcontroller and the motor IC 36. The motor IC 36 can be used to output high / low signals with adapted voltage levels GH_U, GL_U, GH_V, GL_V, GH_W, GL_W to control the MOSFETS of the output stage 26. In addition, the motor IC 36 is used for short-circuit prevention for the control of the output stage 26. In other words, it is avoided that transistors of the output stage 26 arranged in a common bridge branch are simultaneously switched on and the output stage is thereby damaged. The control signals GH_U, GL_U, GH_V, GL_V, GH_W, GL_W are also designed as pulse width modulated signals. However, the respective high (H) signal essentially represents the respective level reversal of the low (L) signal for the phases U, V, W, with a dead time to avoid the abovementioned short circuit between the edges of the signals. The microcontroller, the motor IC 36 and the output stage 26 are shown as components of a frequency converter 25, the components of which can be arranged in a common housing. In particular, the components of the frequency converter 25 can be arranged on a common circuit board.

Reference list

1

Revolving door arrangement

2nd

Turnstile

3rd

Door leaf

4th

Axis of rotation

5

Axial direction

6

Radial direction

7

Circumferential direction

8th

drive

9

Evaluation unit

10th

stator

11

Stator laminated core

12th

Stator disc

13

Do the washing up

14

Bobbin

15

Winding

17th

rotor

18th

Rotor laminated core

19th

Permanent magnets

20th

Thrust bearing

21

Radial bearing

25th

frequency converter

26

Power amplifier

27

Connection for operating voltage

28

Position sensor

36

Motor IC

39

Control line

40

Error reporting

41

DC / DC converter

42

diode

43

Rotor disc

101

Adapter unit

102

Ceiling fastener

103

Ceiling construction

104

Fixation element

105

Suspended ceiling elements

106

Drive fasteners

107

Adapter plate

110

Pre-fuser

111

Connection recess

112

Cover plate

S100-S500

Procedural steps

Claims (12)

1. A method for compensating a force fluctuation acting externally non-uniformly on a door leaf (3) of a revolving door assembly (1) depending on the position of rotation, wherein the revolving door assembly (1) comprises:

   - a turnstile (2) carrying the door leaf (3),

   - an evaluation unit (9), and

   - an electrical drive (8), with

   - a stator (10) and

   - a rotor (17),

   wherein the rotor (17) can be disposed coaxially to an axis of rotation (4) of the turnstile (2) and can be connected to the turnstile (2) for direct gearless driving, and the method is characterized by:

   - rotating (S100) the turnstile (2),

   - determining (S200) the force fluctuation acting externally on the door leaf (3) and/or a rotational speed fluctuation and/or a torque fluctuation depending on the position of rotation, and

   - controlling (S500) the stator (10) with a predefined electrical signal based on the force fluctuation and/or the rotational speed fluctuation determined depending on the position of rotation, by means of which signal are compensated the force fluctuation and/or the rotational speed fluctuation and/or the torque fluctuation.
2. The method according to claim 1, wherein the electrical signal is predefined with regard to

   - a voltage and/or

   - a current and/or

   - an amplitude and/or

   - a frequency and/or

   - a pulse/pause ratio.
3. The method according to claim 1 or 2, furthermore comprising

   - employing a position sensor (28), which is disposed in the electrical drive (8), for determining the force fluctuation, respectively the rotational speed fluctuation.
4. The method according to any of the preceding claims, furthermore comprising the steps of:

   - performing a learning run and

   - storing data arising during the learning run, which represent

   - a force fluctuation and/or

   - a rotational speed fluctuation and/or

   - a torque fluctuation

   depending on the position of rotation.
5. The method according to claim 4, wherein the data

   - represent an current consumption of the electrical drive (8) and/or

   - represent an electric voltage at the connectors of the electrical drive (8) over the positions of rotation and/or

   - represent the positions of rotation of the turnstile over the time.
6. The method according to any of the preceding claims, furthermore comprising

   - determining (S300) a plurality of values (33) for a closed-loop control signal over the positions of rotation (32) of the turnstile (2), which values a closed-loop control receives for compensating the force fluctuation and/or the rotational speed fluctuation and/or the torque fluctuation, and

   - displacing (S400) the values (33) with regard to the associated positions of rotation for generating the electrical signal (34).
7. A revolving door leaf assembly with

   - a turnstile (2) carrying a door leaf (3),

   - an evaluation unit (9), and

   - an electrical drive (8), with

   - a stator (10) and

   - a rotor (17),

   wherein the rotor (17) can be disposed coaxially to an axis of rotation (4) of the turnstile (2) and can be connected to the turnstile (2) for direct gearless driving, wherein the evaluation unit (9) is adapted

   - to cause a rotation of the turnstile (2) by means of the drive (8), characterized in that

   - to determine a force fluctuation acting externally on the door leaf (3) and/or a rotational speed fluctuation and/or a torque fluctuation depending on the position of rotation, and

   - to control the stator (10) with a predefined electrical signal based on the force fluctuation and/or the rotational speed fluctuation determined depending on the position of rotation, by means of which signal are compensated the force fluctuation and/or the rotational speed fluctuation and/or the torque fluctuation.
8. The revolving door assembly according to claim 7, which is adapted to perform a method according to any of the preceding claims 1 to 6.
9. The revolving door assembly according to any of the claims 7 or 8, wherein the stator (10) is adapted for stationary mounting, in particular for ceiling mounting, and with the rotor (17) forms an air gap, which is disposed coaxially to the axis of rotation (4) of the turnstile (2).
10. The revolving door assembly according to any of the claims 7 to 9, furthermore comprising

    - a frequency converter (25) comprising the evaluation unit (9) with

    - a final stage (26), wherein

    - the evaluation unit (9) is adapted

    by means of a pulse width modulation, to realize a parameter of the electrical signal for compensating the force fluctuation and/or the rotational speed fluctuation and/or the torque fluctuation, and

    - the frequency converter (25), depending on the pulse width modulated signal, is adapted

    - to control the final stage (26) with a multiphase representation of the electrical signal (34).
11. The revolving door assembly according to claim 10, furthermore comprising

    - a connection (27) for an operating voltage, and

    - a housing, which comprises

    - the frequency converter (25),

    - the final stage (26), and

    - the evaluation unit (9),

    wherein in particular the connector (27) for the operating voltage is adapted to supply electric energy to the evaluation unit (9), to the frequency converter (25) and to the final stage (26).
12. The revolving door assembly according to any of the claims 7 to 11, wherein, based on a position sensor (28), in particular a Hall-sensor in the electrical drive (8), the evaluating unit (9) is adapted to determine

    - a current rotational speed and/or

    - a current position and/or

    - a current speed

    of the turnstile (2).

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