SU1441442A1 - Device for assessing operatorsъ performance - Google Patents

Description

(21). 4247362 / 24-24

(22) 05/19/87

(46) 11/30/88. Bksh. No. 44

(71) Omsk Institute of Railway Engineers

(72) V.M. Kuznetsov and R.A. Ahmedzhanov

(53) 681.3.071 (088.8)

(56) USSR Author's Certificate No. 1325550, cl. G 09 B 9/00, 1986.

(54) DEVICE FOR THE ESTIMATION OF OPERATOR'S WORK

(57) The invention relates to automation and computing, in particular to devices for evaluating the performance of operators. The purpose of the invention is to improve the accuracy and expand the didactic capabilities of the device, for which block 5 integrating the sum of error moduli modules is made multichannel with signal separation by levels. In this device, the block containing comparison blocks 1, blocks 2 of the error modulus block, scaling blocks 3, adder 4, the integration unit 5, the switch 6 and the indicator 7, the series-connected signal level adjuster 8, the selector 9 and the operation mode setting unit 10 are entered. 5 il.

S

Fu & .i

The invention relates to technical training and can be used in the training of operators of technological facilities and for research purposes.

The aim of the invention is to improve the accuracy of the device and the expansion of its didactic possibilities.

FIG. 1 shows a block diagram of the device i in FIG. 2 is a schematic diagram of a level adjuster, FIG. 3 is a block diagram of a selector; Fig. 4 is a schematic diagram of a semi-automatic mode switching unit and an integration unit; FIG. 5 is a key block diagram.

Each parameter control circuit contains serially connected comparison unit 1, error module allocation unit 2 and scaling unit 3, these outputs are connected to the inputs of the adder 4, the output of which is connected to the input of the integration unit 5, the outputs of which through switch 6 are connected to the indicator 7 (FIG. J)

A set of signal level 8, a selector 9 and a semi-automatic unit 10 for setting operating modes, the outputs of which are connected to the control inputs of the integrator 5, are connected in series. The outputs of the knob 8 is connected to the inputs of the switch 6, the Output of the adder 4 is connected to the inputs of the selector 9 and the switch 6.

Unit 8 consists of dividers I and for voltage, the inputs of which are connected in parallel to the terminals of the power source (Fig 2)

The selector 9. contains a button 12 controls, adders 13, keys 14 and

the key strokes 14 and 15 are the outputs of the selector 9,

The unit 10 consists of voltage dividers 17, series-connected resistors 18 connected to the closing contacts 19 of relay 20, the disconnecting contacts of which are connected through the resistors 21 to the housing. Winding the relay 20 is connected to the source through the contact of the control button 22 (FIG. 4). The switching contact 19 is connected to the information input (switching contact) of the switch

15–23, the inverted output (opening contact) of which is connected to the first output of resistor 24, the direct output (closing contact) of switch 23 is connected to the first output of the capacitor 25, and its second output and second output of the resistor 24 are connected to the output of the operational amplifier 26 of the unit 5, the inverting input of which is connected to a switching contact 19,

25 The key 14 is made in the form of a serial circuit consisting of a null organ 27, a diode 28 and an inverter 29 connected to the signal input of the comparator 30, the control input of which

30 is the first (on) input of the key 14, and the input of the null organ 27 is the second (off) them input of the key 14; The key 15 is made on the relay.

The device works as follows,

In the initial state, the block 10 (FIG. 1) is in the Prepare mode: the contact of the button 22 (FIG. 4) is open, the winding of the relay 20 is de-energized, through the opening and switching contacts 19 the inputs of the operational amplifiers 26 are connected via resistors 21 to the instrument case . The switches 23 are in the initial state 15 and the voltage divider 16 (FIG. 3), when the information input is connected. For the first time, the inputs of the adders 13 and the key 14nen with the inverse output and to the circuit are disconnected from the switching feedback feedback control. Its closure of the on-amplifier 26 resistor included

A common contact is connected to the output of a voltage divider 16 connected to the power supply terminals, and the disconnecting one is connected to the first input of the selector 9. The second inputs of the adders 13 are combined with the subsequent inputs of the selector 9. The output of each adder 3 is connected to the second input of the corresponding switch 14 and the first input of the subsequent key 14 or 15, the Keys .14 have two inputs, the key 15 - one, The outputs of the keys 14 and 15 are the outputs of the selector 9,

The unit 10 consists of voltage dividers 17, series-connected resistors 18 connected to the closing contacts 19 of relay 20, the disconnecting contacts of which are connected through the resistors 21 to the housing. The winding of the relay 20 is connected to the source through the contact of the control button 22 (FIG. 4). The switching contact 19 is connected to the information input (switching contact) of the switch

23, the inverted output (opening contact) of which is connected to the first output of resistor 24, the forward output (closing contact) of switch 23 is connected to the first output of capacitor 25, and its second output and second output of resistor 24 are connected to the output of operational amplifier 26 of unit 5, the inverting input of which is connected to a switching contact 19,

The key 14 is made in the form of a serial circuit consisting of a null organ 27, a diode 28 and an inverter 29 connected to the signal input of the comparator 30, the control input of which

is the first (on) input of the key 14, and the input of the null organ 27 is the second (off) them input of the key 14, the Key 15 is made on the relay.

The device works as follows

In the initial state, the block 10 (FIG. 1) is in the Prepare mode: the contact of the button 22 (FIG. 4) is open, the winding of the relay 20 is de-energized, through the opening and switching contacts 19 the inputs of the operational amplifiers 26 are connected to the instrument housing through the resistors 21. The switches 23 are in the initial state ™ 1, when the information input is connected

24, t, e, the integrator is in Gain mode,

The Prepare-Gain mode allows you to set O of op amps 26 of block 5 according to indicator 7- (fig. 1), set switch 6 in series to the positions corresponding to the outputs of block 5 (the circuit diagram of O is not shown).

Gradually increase the output voltage of the divider 16, through the closing and switching contacts of the button 12 when it is turned on, the voltage on the first inputs of the adders 13 rises. This leads to alternately switching the keys 14 or 15 and the switches 23 when the information input of the switch is connected to the direct output, i.e. in the negative feedback circuit of amplifier 26, capacitor 25 is turned on, or unit 5 integrator is included in Integration mode. The Prepare - Integration mode makes it possible to transfer block 5 to the initial state.

After turning on the button 22, the winding of the relay 20 is energized, the contacts 19 connect the dividers 17 to the integrator inputs of the unit 5, i.e. Work mode is activated.

In the Operation - Gain mode, the required weighting factors are set using dividers 17 as a result of measuring some arbitrary voltage value at the output of adder 4 in the first position of switch 6 with indicator 7 and the voltage at the output of the corresponding integrator of unit 5 in the corresponding position of switch 6.

The required scale values of the blocks 3, made in the form of operational amplifiers with adjustable gain (attenuation) factors, are set.

Block 3 allows the manual rationing of the error signal magnitude according to a voltage value proportional to a predetermined value of the monitored gain parameter; reduce the obtained gain value in accordance with the accepted priorities of the control channels; reduce the gain in proportion to the number of control channels (more precisely, the sum of the weighting factors); reduce the gain to avoid overloading the scaling unit 3 in transient conditions.

The setting of the required gain factor of the scaling unit 3 is carried out as follows.

Some voltage is applied to the direct input of unit 1. On the scaling unit 3, the gain value is fixed, equal to 0

five

0

five

0

five

0

five

0

five

unit. This voltage is measured by the indicator 7 in the first position of the switch 6. The resulting value of the voltage is multiplied by the previously calculated gain of the block 3. By varying the feedback resistance of the amplifier of the block 3 by the indicator 7, this voltage is set.

The required values of the monitored control error levels are set by the indicator -7 at the respective positions of the switch 6 using the dividers 11. The first lowest signal level is set equal to the level of the signal limit from below.

The set values of the signals are connected to the direct inputs of the blocks 1, the actual values are to the inverse ones.

The operation of the device begins with the inclusion of the mode of operation of the unit 10. On the indicator 7 in the first position of the switch 6 the instantaneous value of the module of the total control error is displayed ..

If the output voltage of the adder 4 is different from zero, a switch 14 is switched on the first input and the first switch 23 turns on with a signal from its output, which turns on the first integrator of unit 5 to the Integration mode. The voltage from the output of the adder 4 is fed to the input of the block 5 and through the divider 17, the resistor 18, the closing contact 19 is fed to the input of the first integrator of the block 5, is integrated, the integral evaluation of the control is obtained at the output.

When the signal at the first input of the selector 9 reaches the value of the voltage of the second level, the output voltage of the first adder 13 changes sign to positive, which causes the first switch 14 to turn off at the second input and the first switch 23 and turn on the second switch 14 at the first input and second switch 23. The first integrator of unit 5 switches to the Gain mode with information storage, the second one - to the Integration mode.

When the instantaneous estimate decreases, the output voltage of the second adder 13 changes sign to negative, the zero body 27 switches to the O position and the comparator 30 and the second key 14 are turned on at the first input, since

the voltage at the second input of the comparator 30 disappeared. As a result, the second integrator of block 5 is turned on in Integration mode, and the third is in Amplification mode with information stored on capacitor 25. Disconnection of the third key in the absence of voltages at both inputs is due to the fact that the characteristics of keys 4 and 15 are shifted so that not at zero, but at some positive value of the input signal.

At the end of the control cycle in the Prepare - Integration mode, the indicator is read by indicator 7 in the corresponding switch positions 6 values of the integral control estimates for the error zones

Claims (1)

Formula of the Invention A device for evaluating the work of operators, containing comparison blocks, the inputs of which are the corresponding inputs of a given and controllable 2. parameters, and the outputs are connected to the inputs of the respective error module allocation blocks, the adder, the output of which is connected to the information input of the integration unit and the first input of the switch, and the inputs to the outputs of the corresponding scaling blocks, whose inputs are connected to the outputs of the corresponding error selection module, the second the input of the switch is connected to the output of the integration unit, and the output is connected to the input of the indicator, characterized in that, in order to improve the accuracy and expand the didactic possibilities, device, the selector of the signal level, the selector and the mode setting unit whose output is connected to the control input of the integrator, and the input to the output of the selector, one input of which is connected to the output of the adder, and the other connected to to the third input of the switch. // Physical EE . F (e.