SU822152A2 - Device for evaluating man-machine system - Google Patents

Description

G54)

DEVICE FOR ASSESSING THE QUALITY OF THE MAN-MACHINE SYSTEM

I Invention relates to the means of testing and assessing the quality of functions of the ICT1 Arrangement of argotic systems, in particular, the devices used to create new means of control, argotic tests of information display systems and individual indicators, when evaluating the effectiveness of compositing equipment appliance modifying solutions, etc.

According to the main author. St. No. 643841, a device is known for assessing the quality of a man-machine system comprising a subtracting unit, some inputs of which are connected to the inputs of a device, others to a block of program values, and outputs via a decision block to information inputs of a register, a drive, a block of average processing , the comparison unit and the counter, the input of which is connected to the input unit of the device, and the output - to the control input of the average generation unit, whose information input through the drive is connected to the outputs of the decision unit, and the output rows through the comparator to a control input of the recording unit l.

A disadvantage of the known device is the low reliability of the assessment of the quality of the human machine system due to the lack of information about the temporal characteristics of the human operator, in particular, about the time delay of bringing the ergetic system to the optimum state, i.e.

0 state corresponding to the case of system control under the optimal law. A human operator is able to achieve a quality level of control inherent in optimal controllers synthesized according to criteria that take into account a number of ergonomic constraints {but with some delay in relation to optimal automatic systems, the value of which depends on the fitness of the operator, the quality of controls and t .d., i.e., the factors that characterize the quality of the human-mummy system.

five

The purpose of the invention is to increase the reliability of assessing the quality of human-machine systems.

The goal is achieved by the fact that

Claims (2)

0, the lag analyzer and the calculator are entered in the quality of the human-Migiain system, the inputs of which are connected to the information outputs of the man-machine system, the outputs to the first inputs of the lag analyzer, the second inputs of which are connected to the outputs of the subtracting unit, and the outputs to the information inputs of the registration unit. The drawing is a block diagram of the device. A device for evaluating the quality of the human-machine system 1 contains a software unit 2, a subtraction unit 3f, a decision unit 4, a storage unit 5, a counter 6, an average value generation unit 7, a comparison unit 8, a registration unit 9, a calculator 10, a delay analyzer 11. The device works as follows. A series of tests are performed, each of which represents a process or control mode performed. The number of tests is fixed by the counter 6. From the information outputs of the man-machine 1 system, the inputs of the subtractive unit 3 and the inputs of the calculator 10 receive voltages proportional to the current values of the state system parameters. The voltages at the start of the equilibration mode are used by the calculator 10 as initial conditions for subsequent continuous calculations. The calculator 10 calculates the optimum values of the phase coordinates of the system 1. The calculations are carried out according to the program developed in advance and embedded in the computational gel 10. At the output of the calculator 10 are formed during all the control modes of the voltage of the phase coordinates of the object, controlled by the optimal law. The other inputs of the subtracting unit 3 are supplied with the corresponding voltages from the program block. 2. The differential voltages from the outputs of the subtracting unit 3 are fed to the inputs of the analyzer 11 and the decisive unit 4, in which, depending on the nature of the tests, and therefore the type of selected quality criterion, they are processed; for example, squared and integrated . The analyzer 11 compares, for example, those coming from block 3 and calculator 10, and during each mode. control generates a pulse for each coordinate of the control object, the duration of which characterizes in real scale the value of the delay time of bringing the control object for this coordinate to the program state from the casting time (conditionally the same object with the same initial conditions of the optimal automatic system The formation of the leading edge of the pulse occurs at the moment of equality of the program and optimal values of the object's coordinates, the formation of the trailing edge is in The equality of the program and current (real) values of the object coordinates. The number of pulses (number of channels) corresponds to the number of registered phase coordinates of the object. From the output of the decision block 4, the voltage goes to the inputs of drive 5 and to the information inputs of the registration block 9. To other inputs of the block registration 9 signals are sent from the analyzer 11. From the output of the accumulator 5, the voltage proportional to the sum of the quality criterion values calculated for the past number of tests goes into block 7 during the average working tim evaluation criteria values. The unit 7 outputs at the output a voltage proportional to the average value of the criterion for the last number of tests, which is fed to the comparison unit 8, where it is compared with the previous average value of the quality criterion. At the time of operation of the comparison unit 8, the signal from its output to the control input of the registration unit 9 records information from the outputs of the decision block 4 and the analyzer 11 of the delay to the registration unit 9. In the end, the test result is the value of the criterion for evaluating the man-machine system such a number of tests to which the operator has acquired a steady control skill, as well as the statistical characteristics of the operator's lag time compared with the optimal controller for each coordinate. Thus, the proposed device, by introducing the analyzer 11 and the calculator, makes it possible to characterize the quality of the man-machine system by the lag time and, consequently, to increase the reliability of the estimate. The invention The device for assessing the quality of the man-machine system according to ed. St. 643841, characterized in that, in order to increase the reliability of the assessment, a delay analyzer and a calculator are entered into the device, the inputs of which are connected to the information outputs of the human-machine system a, outputs the first inputs of the delay analyzer, the second inputs of which are connected to the outputs of the subtracting unit, and the outputs - from the information inputs | 1 of the registration unit. - Sources of information taken into account during the examination 1, USSR Author's Certificate 643841, cl. & 05 V 23/00, 19-79 (prototype). .