SU492876A1 - Device for software control - Google Patents

Description

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The invention relates to computing and can be used to generate program control signals, the operation of an automated system for checking electrical and time parameters.

Software control devices are known that contain a pulse generator, the output of which is connected to the input of a clock counter through the start-up circuit, a counter of commands 10 which output is connected to the input of the decoder, and a switching circuit whose control outputs are connected to the start-stop circuit input zeroing the clock counter, with the summing input of the 15th command counter and with the first output of the device, the information inputs are connected to the output of the clock counter, to the output of the decoder n to the input of the device.

The known devices are intended for 20 outputting groups of functional impulses, which are formed by a switching circuit from a cyclically repeating reference grid of impulse signals in accordance with the control code specified by the decoder 25

torus teams. When applying the generated functional impulses to the blocks of the automatic control system, the groups of the elementary operations distributed during & amply are executed, consisting of several separate types of control operations. Functional pulses determine the delay times of the formation of a stimulus signal and the delay of the start of the conversion of the control; signal, as well as a sequence of digital conversion and processing of discrete measurement results. In this case, the final part of the control operations associated with digital transformations is standardized in time, and the initial part associated with the formation of delays is variable in time and leads to a mismatch in the execution of certain types of control operations and cycles of the device. As a result, the work program (carried out by the circuit method) is compiled taking into account both the types and sequence of control operations performed and their location relative to the operation cycles of the control unit and the change of its duration leads to a change of program and for p $ y "related control operations. The purpose of the invention is to simplify the nepecTpi of the device when changing the sequence of operations. This is achieved by the fact that the control outputs of the switching circuit are connected} to the inputs for setting the number of the clock ticker I counter | 1 command, the control output of the encoder is connected to the second output of the device. On ttr. 1 is a block diagram of a device for software control; on fng. 2 - at. The control signal loop diagram is shown. The block diagram of ycTpoflcfBa contains decoder 1 for converting an operation command code into a control program command represented by a set of working instructions; command counter 2, intended for setting and forming the operation com code; the switching circuit 3 of the AND 4 and OR 5 circuits, designed for the formation of programmable composition, time of issue and address of the distribution of functional impulses; an electronic clock 6 consisting of a pulse generator 7, a start-stop circuit 8, and a clock counter 9 for setting and generating a discrete-variable time gate code for functional pulses. The control outputs of the circuit 3 (the output of the OR 5 circuits) are connected to the inputs of the command counter unit 2, the clock counter 9 zeroing input, the start-stop circuit input 8 and the output of the 1O device, as well as the number setting inputs clock counter 9 and command counter 2; the outputs of the digit bits of the command counter 2 are connected to the inputs of the decoder 1; the outputs of the decoder 1 are connected to the information inputs of the switching circuit 3 (with the inputs of the circuits And 4), and also with the output of the device 11; Some information inputs of the switching circuit 3 (inputs of the AND circuits) are connected to the outputs of the counting bits: the clock counter 9, and others (inputs of the FT 4 and OR 5 circuits) are connected to the input 12 of the device. The device generates each control step (one control operation) control signals presented in FIG. 2 and consisting of a continuous command of the control program 13 and functional pulses 14. A command command is written to the command counter 2 and the time of the current control operation, which is transmitted from the counter bits of the command counter 2 to the inputs of the decoder 1. A logic circuit Decoder 1 is formed by a program 13 command as part of a set of working commands that are continuously sampled by levels during the time of the test op & The scale is transmitted to the executive bodies of the device and its output 11 for switching on the equipment and for setting the operating mode of the equipment. The information inputs of the switching circuit 3 are received, respectively, from the decoder 1 — a set of operating commands, from the outputs of the counters of the clock counter 9 — a discretely variable number code, from the input; Yes 12 devices - the results of arithmetic operations, in particular the results of the tolerance control, and the test results of unconditional execution, in particular, alarms (to the inputs of the OR 5 circuits). A set of functional pulses 14 for each control operation is generated by AND circuits 4, to the inputs of which information is received that necessitates the formation of a functional impulse, and a discrete-variable time code for the time gating of the corresponding functional impulse. Cx}) Ordered functional impulses 14 are grouped by means of the schemes OR 5 and transmitted from the latter to the inputs of the actuators. In one cycle of filling the clock counter 9, determined by the length of time, one control operation is performed and the next is prepared (a new operation code is entered into the command counter 2). At the same time, at time t, the number is written to the counting bits of the clock counter 9, which determines the delays in the output of the stimulus signal and the beginning of the conversion of the monitored signal (the delay is determined by 5 points as an addition to the recorded numbers); at the end of the programmed length of time t - t o, a set of functional pulses are formed to produce a stimulus signal; at the end of the programmed period of time t o, a set of functional pulses is formed for digitally converting the monitored signal and the corresponding arithmotic operations; at the moment of time t d, to the control results signals, a functional 1 is formed, the first impulse of the end of the checkpoint; at the time of the premoni t, the unit G or the number is written into the countable bits of the command counter 2, determined by the ycrattoBKy command of the new control operation; in the time interval t V, the program 13 command is formed and a continuous poorevian; at the moment of time t, a new filling of the clock counter 9 is started, and the described cycle of forming the control signals is repeated, but for the subsequent operation. Thus, in i the device, the programming of each of the control operations is separated; From the programming, the sequence of their benefits is separated. Separating the programming of the types of console operations from the programming of the sequence of their execution leads to a change in the rearrangement of the device when the sequence of operations changes. An independent change of the sequence of control operations is performed by changing the decoder 1, and a separate change of the control operation IDs - by changing the logic of the switching circuit 3. The device can work with a flexible program carrier that can be locked into start-up mode with synchronization from the switching circuit 3 .. In this case, POSSIBLE The following options: -outputs of the program carrier are connected to the inputs of the set number of command counter 2, while achieving flexible programming of the control sequence -you The software carrier moves are connected to the inputs of the dehairr 1, while in addition to the flexible programming of the control sequence, add / drop the need to install a command counter 2 into the device; - outputs and inputs of software carrier. connected to the information I inputs / switching circuit 3 and the device output 11, the program set of operating commands is formed directly by the program and, respectively, apart from the flexible programming of the monitoring sequence, flexible programming of the discrete setting of the operating pulses is ensured for setting tolerances of monitored signals), as well as flexible programming of operational inclusions and operating modes equipment. However, it does not exclude the need for installation in a -. device counting of commands 2 and decoder 1. Object of the invention. Device. for software control, which contains a pulse generator, the output is connected through the start-stop circuit to the input of the clock counter, a counter xmaxwd, the output of which is connected to the input, a decoder, and a switching circuit, the controlling outputs of which are connected to the launch-stop circuit, with the input of zeroing the clock counter with the summing input of the command counter and with the first exit of the device, the information inputs are connected to the output of the counter; ticks, to the output of the decoder and to the input of the device, which are, in order to simplify the restructuring of the device when changing the sequence; operations, in it the control outputs of the switching circuit are connected to the inputs of the number setting. . a clock counter and a command counter, the control & output of the switch 4) is connected to the second output of the device.

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