CN106067743A - Control device for brushless direct current machine - Google Patents
Control device for brushless direct current machine Download PDFInfo
- Publication number
- CN106067743A CN106067743A CN201610020209.3A CN201610020209A CN106067743A CN 106067743 A CN106067743 A CN 106067743A CN 201610020209 A CN201610020209 A CN 201610020209A CN 106067743 A CN106067743 A CN 106067743A
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- CN
- China
- Prior art keywords
- motor
- control device
- brushless
- direct current
- current machine
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
- H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of control device for brushless direct current machine, it is characterised in that including: ECU controller, DC brushless motor, described ECU controller connects DC brushless motor.The present invention is by removing Brushless DC Motor Position sensor from traditional Hall element being built in motor internal, and on controller ECU circuit board, appropriate location fixed installation position sampling testing circuit is to realize the position signal acquisition of BLDC motor.Greatly reduce the cost of DC brushless motor and improve reliability and stability, also quite convenient for BLDC brshless DC motor with the over all Integration of controller.
Description
Technical field
The present invention relates to a kind of control device, be specifically related to a kind of brshless DC motor (English abbreviation BLDC, Brushless DC Motor) and control device.The invention belongs to design of electrical motor field.
Background technology
Brshless DC motor controls prior art generally following two.
The first: using the DC brushless motor of band hall position sensor, controller reads hall sensor signal and realizes commutation and electric machine speed regulation control.
In this scheme, Hall element is built in motor internal so that the internal structure of motor is complicated, cost increases, higher to motor production requirement, causes Hall element unstable simultaneously because motor long-term work internal temperature compares Gao Shihui, reliability decrease, affects motor and controls.And this solution increases wire and be connected with sensor with adapter.
The second: use the DC brushless motor without hall position sensor, controller software algorithm realizes commutation and electric machine speed regulation controls.
In this scheme, although the simple cost of electric machine structure reduces, but commutation control difficulty is big, the complicated realization of start-up course is difficult to utilize controller software algorithm to carry out, and can reduce speed adjustable range and the dynamic response performance of motor.Additionally, add the cost of controller software, current many such as starts with commutation control algolithm also and skillful, and being used in safety and reliability on automotive electronics cannot ensure.
Summary of the invention
For solving the deficiencies in the prior art, it is an object of the invention to provide a kind of control device for brushless direct current machine, to solve prior art and be difficult to that reliability is low, internal structure of motor or the high in cost of production technical problem of software.
In order to realize above-mentioned target, the present invention adopts the following technical scheme that:
Control device for brushless direct current machine, it is characterised in that including: ECU controller, DC brushless motor, described ECU controller connects DC brushless motor.
Aforesaid control device for brushless direct current machine, it is characterised in that also include D.C. regulated power supply, D.C. regulated power supply connects ECU controller, DC brushless motor respectively.
Aforesaid control device for brushless direct current machine, it is characterized in that, described ECU controller includes that dc bus, three-phase drive bridge, power tube drive module, position and current feedback circuit module, microprocessor, microprocessor connects power tube respectively and drives module, position and current feedback circuit module, power tube drives module to connect, D.C. regulated power supply connects dc bus, and dc bus connects three-phase drive power electric bridge three-phase drive bridging and connects DC brushless motor.
Aforesaid control device for brushless direct current machine, it is characterised in that described ECU controller includes that Support Capacitor, Support Capacitor are connected in parallel on dc bus.
Aforesaid control device for brushless direct current machine, it is characterised in that identical high frequency power switching tube is formed by described three-phase drive bridge by three, inputs as dc bus DC voltage, is output as UVW three-phase, is directly accessed the three-phase coil of DC brushless motor.
Aforesaid control device for brushless direct current machine, it is characterised in that ECU controller is arranged on ECU controller pcb board, DC brushless motor dc bus same with three-phase drive bridge, power driver module, DC brushless motor all directly realize being connected on circuit boards.
Aforesaid control device for brushless direct current machine, it is characterised in that realize being connected on the most each comfortable ECU circuit board between microprocessor with power driver module, position and current feedback circuit.
The invention have benefit that: the present invention is by removing Brushless DC Motor Position sensor from traditional Hall element being built in motor internal, and on controller ECU circuit board, appropriate location fixed installation position sampling testing circuit is to realize the position signal acquisition of BLDC motor.Greatly reduce the cost of DC brushless motor and improve reliability and stability, also quite convenient for BLDC brshless DC motor with the over all Integration of controller.
Accompanying drawing explanation
Fig. 1 is the structural representation of control device for brushless direct current machine of the present invention；
Fig. 2 is ECU controller pcb board schematic diagram in control device for brushless direct current machine of the present invention；
Fig. 3 is control device for brushless direct current machine running status schematic diagram of the present invention；
Fig. 4 is control device for brushless direct current machine commutation flow chart of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention made concrete introduction.
With reference to shown in Fig. 1, the invention provides a kind of motor position sample detecting circuit to be directly anchored on brshless DC motor ECU controller circuit board, installed with the suitable of motor position by controller, can realize motor and control sampling and the detection of commutation position signalling, its effect is the same with the brshless DC motor of band Hall element.Motor is with ECU controller over all Integration simultaneously, it is achieved that the overall structure of brshless DC motor assembly simplifies, without connecting wire and connector, is advantageously implemented the application of the compact and higher safety and reliability of installing space.
If Fig. 2 is the ECU controller circuit board integrated installation position view with brshless DC motor of the present invention, U, W, W welding hole reserved by figure middle controller circuit board, it it is brshless DC motor three phase mains terminal welding position, three phase connections of brshless DC motor are directly welded on circuit board, so motor is just fixed into an integrated motor assembly with controller, it is not necessary to additionally connected by wire and connector.And location A region is the region of position signalling sample rate current in figure, this region is for fixed position and current feedback circuit module (also known as position sampling circuit module), the output to motor rotor position signal is realized by motor position after being calibrated, due to rotor-position signal sample circuit be on the circuit board of directly welding such as a-quadrant in Fig. 2, therefore the position signalling sampled can be transmitted directly in the microprocessor on circuit board, decrease wire and the connector of built-in Hall sensors, simultaneously because position sampling testing circuit is external, cooling electronic component effect is also better than the structure within built-in motor.
Fig. 1 is the hardware principle block diagram of the present invention, is made up of with current feedback circuit the dc bus Support Capacitor on D.C. regulated power supply, dc bus, dc bus, three-phase drive bridge, DC brushless motor body, microprocessor, power driver module and position.Wherein D.C. regulated power supply is given DC bus powered, it is provided that galvanic current source, powers to ECU controller electronic devices and components simultaneously.And dc bus and Support Capacitor, three-phase drive power electric bridge (being called for short three-phase drive bridge), power tube drive module, position to belong to ECU controller with current feedback circuit module and microprocessor, it is achieved to control functions such as the rotation of motor, commutation, error protection process.DC brushless motor BLDC is motor body, without built-in Hall sensors, is directly welded on controller circuit board by UVW three-phase terminal, it is not necessary to connecting line and connector connect.
Dc bus Support Capacitor Main Function is to be filtered dc bus, it is ensured that stablizing of DC bus-bar voltage, absorbs three phase bridge and the pulsating current of motor, prevents the voltage overshoot impact on power tube simultaneously.Support Capacitor is connected in parallel on dc bus.Identical high frequency power switching tube is formed by three-phase drive bridge by three, inputs as dc bus DC voltage, is output as UVW three-phase, is directly accessed DC brushless motor three-phase coil.The same dc bus of three-phase drive bridge, power driver module and motor body all connect without wire, directly realizing the most on circuit boards connecting, its operation principle is by three, the different on off states of 6 power tubes to make DC bus current be continually changing to the sense of current of UVW three-phase coil and size to control realizing the commutation to motor and velocity of rotation.Microprocessor is the core of ECU controller, controls DC brushless motor.The same power driver module of microprocessor, particularly position are all connected without wire or connector with current feedback circuit, and its signal connects directly realization on ECU circuit board；The control logic of microprocessor is amplified rotor-position signal and the current control feedback driving three-phase drive electric bridge power tube switch, position and current feedback circuit to detect DC brushless motor by power driver module.One brshless DC motor closed loop control process is that the current rotor-position of motor body and size of current are detected with current feedback circuit in position, and data are delivered to microprocessor, microprocessor is tabled look-up according to position data and is obtained current phase change logic numerical value and be sent to power driver module, power driver module drives three phase bridge according to phase change logic control break motor UVW three-phase current, thus achieves a commutation and controls；The deviation of microprocessor calculating current obtains present current value simultaneously, and the switch time realizing three phase power pipe by changing PWM duty cycle controls, and so completes a current of electric and controls closed loop.Microprocessor is with signal duplex channel between power driver module; commutation is controlled by microprocessor and PWM regulation signal exports to power driver module; power driver module the most constantly detects on off state and the voltage condition of three-phase drive bridge; it is input simultaneously to microprocessor; microprocessor combines current feedback signal and judges whether to break down; once there is abnormal failure in certain parameter, and microprocessor will cut out power driver module, protection power tube and motor body in time.
According to above-mentioned setting, the operation to control device for brushless direct current machine of the present invention i.e. can be realized.
The finite state machine structure that the core of ECU controller of the present invention is made up of initial state, ready state, run mode and 4 states of fault case, as shown in Figure 3.When completing the laggard loop control entrance of becoming owner of of various initial work, i.e. entering the polling dispatching of finite state machine, this is an Infinite Cyclic, the most just can force and exit this circulation.Wherein initial state carries out the work such as the initialization of the correlated variables of motor control, parameter, the original value assignment of finite state machine global variable transmission；Ready state carries out motor and controls to enter task ready stage, electric current, the parameter of rotating speed PI controller, boundary condition assignment, the fault recognition before running status；Run mode completes the properly functioning control function of motor, and every boundary condition that monitoring motor runs simultaneously judges whether to break down and timely handling failure；Fault case will carry out closing system power power supply, issuing fault message by CAN to communication network, process accordingly according to different fault levels simultaneously.The transformational relation of above four states is as shown in Figure 3, initial state completes i.e. to enter ready state, ready state the most i.e. enters run mode, occur that abnormal condition is just skipped run mode and is directly entered fault case, run mode breaks down and i.e. terminates normal work entrance fault case, run mode can return initial state and receive new data message, and simultaneous faults state also can return to initial state and restarts to enter run mode recurrence normal workflow after being repaired.
Brshless DC motor BLDC controls the position signalling needing to obtain rotor, is determined the power supply logics relation of UVW three-phase coil by rotor current location, so rotor-position signal is the key that brshless DC motor BLDC controls.The rotor-position signal sample detecting of brshless DC motor of the present invention obtains not by the Hall sensor module of electric machine built-in, as it is shown in figure 1, rotor-position signal sample circuit is directly welded on ECU circuit board.The most micro-process can directly read acquisition rotor-position signal.As shown in Figure 4, use microprocessor GPIO(universal input/output interface) capturing function, the level change of monitoring position signalling in real time, when rotor often turns over 60 degree of mechanical angle, i.e. there is one-shot change in position signalling, when rotor rotates one week, position signalling occurs 6 times to change, 6 logic value of correspondence position signal output.Therefore trigger a commutation to interrupt when micro-process GPIO captures the change of a rising edge or trailing edge.Owing to commutation is the key that brshless DC motor BLDC controls, therefore processed by the interrupt task of micro-process and carry out position detection and commutation control.After entering interrupt handling routine, first the position signalling logical data of GPIO mouth is read, each logic value is corresponding, and UVW three phase power tube drive circuit switchs codimg logic, obtain the switching control state of current three-phase drive bridge power tube by tabling look-up, then power tube switching logic numerical value is delivered to drive circuit and controls the sense of current of three-phase bridge to realize the commutation control of motor.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.Skilled person will appreciate that of the industry, above-described embodiment limits the present invention, the technical scheme that the mode of all employing equivalents or equivalent transformation is obtained the most in any form, all falls within protection scope of the present invention.
Claims (7)
1. control device for brushless direct current machine, it is characterised in that including: ECU controller, DC brushless motor, described ECU controller connects DC brushless motor.
Control device for brushless direct current machine the most according to claim 1, it is characterised in that also include D.C. regulated power supply, D.C. regulated power supply connects ECU controller, DC brushless motor respectively.
Control device for brushless direct current machine the most according to claim 2, it is characterized in that, described ECU controller includes that dc bus, three-phase drive bridge, power tube drive module, position and current feedback circuit module, microprocessor, microprocessor connects power tube respectively and drives module, position and current feedback circuit module, power tube drives module to connect, D.C. regulated power supply connects dc bus, and dc bus connects three-phase drive power electric bridge three-phase drive bridging and connects DC brushless motor.
Control device for brushless direct current machine the most according to claim 3, it is characterised in that described ECU controller includes that Support Capacitor, Support Capacitor are connected in parallel on dc bus.
Control device for brushless direct current machine the most according to claim 4, it is characterized in that, identical high frequency power switching tube is formed by described three-phase drive bridge by three, inputs as dc bus DC voltage, it is output as UVW three-phase, is directly accessed the three-phase coil of DC brushless motor.
Control device for brushless direct current machine the most according to claim 5, it is characterized in that, ECU controller is arranged on ECU controller pcb board, and DC brushless motor dc bus same with three-phase drive bridge, power driver module, DC brushless motor all directly realize being connected on circuit boards.
Control device for brushless direct current machine the most according to claim 6, it is characterised in that realize being connected on the most each comfortable ECU circuit board between microprocessor with power driver module, position and current feedback circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610020209.3A CN106067743A (en) | 2016-01-13 | 2016-01-13 | Control device for brushless direct current machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610020209.3A CN106067743A (en) | 2016-01-13 | 2016-01-13 | Control device for brushless direct current machine |
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| Publication Number | Publication Date |
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| CN106067743A true CN106067743A (en) | 2016-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610020209.3A Pending CN106067743A (en) | 2016-01-13 | 2016-01-13 | Control device for brushless direct current machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239757A (en) * | 2018-03-07 | 2019-09-17 | 上海艳灿电子科技有限公司 | An electric plastic strapping machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5744921A (en) * | 1996-05-02 | 1998-04-28 | Siemens Electric Limited | Control circuit for five-phase brushless DC motor |
| CN1635310A (en) * | 2003-12-30 | 2005-07-06 | 上海三电贝洱汽车空调有限公司 | Motor compressor controller for air conditioner |
| CN101177848A (en) * | 2007-10-19 | 2008-05-14 | 西安交通大学 | A direct-drive single-needle industrial lockstitch control system |
| CN203278723U (en) * | 2013-05-25 | 2013-11-06 | 西安科技大学 | A brushless DC motor controller |
| CN103857582A (en) * | 2011-11-07 | 2014-06-11 | 株式会社捷太格特 | Electrically operated power steering device |
| CN206490609U (en) * | 2016-01-13 | 2017-09-12 | 万向钱潮股份有限公司 | Control device for brushless direct current machine |
-
2016
- 2016-01-13 CN CN201610020209.3A patent/CN106067743A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5744921A (en) * | 1996-05-02 | 1998-04-28 | Siemens Electric Limited | Control circuit for five-phase brushless DC motor |
| CN1635310A (en) * | 2003-12-30 | 2005-07-06 | 上海三电贝洱汽车空调有限公司 | Motor compressor controller for air conditioner |
| CN101177848A (en) * | 2007-10-19 | 2008-05-14 | 西安交通大学 | A direct-drive single-needle industrial lockstitch control system |
| CN103857582A (en) * | 2011-11-07 | 2014-06-11 | 株式会社捷太格特 | Electrically operated power steering device |
| CN203278723U (en) * | 2013-05-25 | 2013-11-06 | 西安科技大学 | A brushless DC motor controller |
| CN206490609U (en) * | 2016-01-13 | 2017-09-12 | 万向钱潮股份有限公司 | Control device for brushless direct current machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239757A (en) * | 2018-03-07 | 2019-09-17 | 上海艳灿电子科技有限公司 | An electric plastic strapping machine |
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Application publication date: 20161102 |
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