SU587463A1 - Function generator - Google Patents

Description

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The invention relates to automation and relates to the modeling of automatic control systems with programmed control and quantization by level and can be used to generate reproduction functions ...

A device for reproducing a function that is permanently known is known. A minicea device, the output of which is connected to the input of the sum of the 1ator, and the signal shaping valve of the function one input of which is connected to the output of the summatcher, the other input to the clock pulse signal bus, and the output to the address input of the memory 11 .

 A disadvantage of this device is its low speed.

The closest in technical essence to the proposed device is a functional generator. The program block containing the program block, the adder, the first input of which is connected to the first output of the memory block, the output to the first input of the block and to the first inputs of the first and second And elements, the other inputs of which are connected to the pulse generator, the output of the first And element connected to the second memory 2 input

The purpose of the proposed invention is to improve the accuracy of the functional generator - it is achieved by the fact that the functional generator contains a transducer amplitude - time and a serially connected error sign analyzer, a trigger and a third AND element, another input connected to the output of the second AND element and another trigger input, the first input the transducer amplitude - time is connected to the output of the program setting block, the second input to the second output of the memory block, the output to the second input of the adder, the output of which is connected nen mismatch with the input of the analyzer plate and the other trigger input connected to the output of the first element K.

The drawing shows a functional diagram of the generator.

The generator contains the memory block 1, the adder 2, the amplitude converter - time 3, the analyzer mismatch sign 4, the first, second and third elements 5,6, 7, the trigger 8, the pulse generator 9 and the program setting block 10.

The device works as follows.

The value of the time interval Tcbl (corresponding to the quantum of a software function comes from memory 1 to adder 2, where this interval in each device operation cycle is subtracted from the value of the current time generated from -adjust 2 and counted from the last signal of the program signal) . When a zero difference between the indicated values is obtained in the adder 2, the discharge state of the adder's sign changes, the element 5 is opened, and the generator 9 pulse generates at the output of the element 5 the signal of the program function, which arrives at the address; the input of memory block 1, preparing it for issuing the next value for the next quantum.

In addition to the indicated operations of forming a program function signal, the following operations are carried out in each cycle of the device operation. The signals of the adjustable function are generated. The level deviation signal d is fed to the converter input amplitude - time 3, from which the time error signal Atr goes to the input of the adder 2 From this signal, the time interval signal of the tuBTvp software function for the given quantum, which comes in each cycle from memory 1, is subtracted, if the sign of the time error of the field Residents and discharge survey adder 2 vedaet mark corresponding signal block of the memory 1. The result obtained is folded in the adder 2 to the magnitude of the current time

When a zero result is obtained, the state changes, the digit of the sign of adder 2 is opened, the element 6 is opened, and the clock pulse signal forms at its output a variable of the regulated function. If the time mismatch Li has a sign, the digit of the sign of the adder 2 does not produce. the interrogation signal of the memory unit 1, and in the adder 2, the error value is added to the current time value ". . When a zero result is obtained, the discharge state of the sign of the adder 2 changes. element 6 opens and an adjustable function signal is generated.

This signal enters the input element And 7 blocking the channel forming the signals of the adjustable function and passes through this element AND to the output bus of the device. Simultaneously, this signal is fed to the input of the trigger 8, putting it into a state in which the element 7 is closed. The blocking block, consisting of trigger 8 and Elmenta 7, prevents the device from generating spurious signals of a reproducible function.

The time error in the device can also be generated by multiplying the amount of deviation in level Jfp fed to one converter input amplitude - time 3 by the inverse of the average derived software function VfKBpr of this quantum inputted to the second input converter 3 from the output memory unit 1, the address input of which receives the signal of the adjustable function, and the control input the clock signals of the pulse generator 9 in each cycle of the device operation.

Claims (2)

1. USSR author's certificate  443386, M.C. & 05 V. 19/18, 1974. 2. USSR author's certificate  485440, M.C. OOB F 1/02, 1974.