SU926620A1 - Device for quality control of man-machine system - Google Patents

Description

The invention relates to the means of testing and evaluating the quality of erratic systems and can be used in the development of new systems and controls, displaying information. formations as well as in training systems.

It is known a device for evaluating the quality of a human-machine system that contains a subtracting unit, some inputs of which are connected to the inputs of the device, others - to a software unit of values, and outputs via a decision block, implemented as a set of several blocks, to the inputs of a registration unit. The device calculates an integral assessment of the quality of the system, on the basis of which an assessment is made of the quality, performance of operator 1.

The drawbacks of the device are the narrow area of its use, limited by the possibilities of the integral criterion, and the accuracy of the evaluation is low, because the device does not provide for the possibility of determining whether the operator is trained, only after achieving which the assessment can be representative.

The closest to the proposed technical entity is a device for assessing the quality of a human-machine system, which contains a program-parameter block, a decision block, a registration block, a subtraction block, some of the inputs of which are connected to the inputs of the device, others - of a block of program values, and outputs - with the inputs of the decision block, the output of which is connected to the information block. the input of the registration unit, the accumulator, the average generation unit, the comparison unit and the counter, whose input is connected to the device input, and the output is about the control input, the average generation unit, whose information input is connected to the output of the decision unit through the storage unit, and output through the comparison unit — with the control input of the registration unit; the device makes it possible to assess the quality of the man-machine system in the steady operation mode of the operator, in which a series of tests is carried out, each of which is executed process or control mode. For each N-OM test, the current value of the primal quality criterion is calculated, as well as the average value of the criterion for the N tests performed. The last two average criteria values, i.e. those calculated for the N tests and for the N-i-oe test are compared with each other. If they differ from each other by an admissible small value or equal to each other, then the output of the system to a stable mode is fixed, i.e. it is recorded that the operator has reached the state of learning. As an assessment of the quality of the ergatic system being tested, the current criterion value found on the last trial 2 is taken.

The drawbacks of the device are low accuracy and long evaluation times.

The purpose of the invention is to improve the accuracy and speed of the device.

The delivered spruce is achieved by the fact that the device for controlling the quality of the man-machine system containing a counter, a registration block, a block of program parameters, a connected output to the inputs of the first subtractive unit, connected by outputs to the inputs of a decision block, a drive connected to the information output Three setters, three comparison blocks, the minimum value selection block, the maximum value selection block, the second one are entered to the input of the Average Value Development block connected with the output to the input of the first comparison block. a subtracting unit, an And element and a memory unit connected by an information input to the output of the decision block, a control input to the output of the first setpoint, a first input of the second comparison unit and to the control input of the average generation unit, and an output to the accumulator inputs, minimum selection blocks and the maximum values associated with the outputs of the inputs of the second subtraction unit, the output of which is connected to the first input of the third comparison unit connected by the second input to the output of the second unit, and the output to the first input And connected by the second input to the output of the fourth comparison unit, connected by the first input to the output of the third transmitter, and the second input to the output of the average generation unit and to the information input of the registration unit, the control input of which is connected to the output of the And element connected by the third input to the output of the first comparison unit, and the fourth input to the output of the second comparison unit, the second input of which is connected to the output of the counter.

The drawing shows the structural diagrams of the proposed device.

The device contains the first subtraction unit 1, the program parameter block 2, the decisive block Zr registration block 4, counter 5, memory block 6, drive 7, average value generation block 8, first, second, fourth and third comparison blocks 9-12, respectively, blocks 13 and 14 of the choice of the minimum and maximum, the second subtraction unit 15, the third, second and first setters 16-18, respectively, and the element And 19.

The device works as follows.

A series of tests are performed, each of which is a process or control mode performed. The number of tests is recorded by the counter 5. The inputs of the first subtractive unit 1 receive voltages proportional to the current values of the parameters of the state of the man-machine system. Its other inputs from block 2 of program parameters are supplied with program values of the corresponding voltages. The differential voltages are applied to the decision block 3, where, depending on the type of selected quality criteria determined by the nature of the tests, they are processed, for example squared and integrated. From the output of the decision block 3, the voltage is applied to the information input of the memory block 6, where it is stored and stored during n tests of the system, the number of which is set by the first setter 18. After each test, the storage in block 6 of the voltage memory is proportional to the values of the criteria arrive at drive 7, which is summed up.

The output of accumulator 7 is a voltage proportional to the sum of the n last values of the criterion. It enters the block, 8 generating an average value, to the control input of which from the output of the first unit 18 a signal is given corresponding to the number n of the sum (averaging interval). From block 8, the voltage proportional to the average value of the criterion for the last n tests is fed to the first and fourth blocks 9 and 11 of the comparison.

Claims (2)

1. USSR author's certificate for application No. 2603122, class, G 09 B 9/00, 1978. 2. Authors certificate of the USSR 643841, cl. G 05 B 23/00, 1976.