SU450136A1 - Software controller - Google Patents

Description

one

The invention can be used in automation systems, radio electronics.

Known software controllers containing a series-connected master oscillator, dividers, and a decryptor reproduce the program for switching the actuators on or off continuously, starting from the moment they start up and until the last command is issued.

However, such devices have the disadvantage that impulse noise arising from the program connection or disconnection of actuators distorts the subsequent program and can not be suppressed with the help of various kinds of filters.

A regulator is proposed, characterized in that remote switches and relays are installed according to the number of decoder channels. The output channels of the descrambler are connected via corresponding remote switches with a relay coil, the output of which is connected to the controller output by one of the inputs of the frequency divider and the operating coil of the remote switch, one of the fixed contacts of which is connected by the coil of the next channel relay.

The invention is illustrated in the drawing.

The master oscillator 1 is connected to the input of frequency dividers 2. The state of the frequency dividers is continuously polled by the decoder 3, which is connected with its elements in parallel to the frequency divider.

The decoder 3 is built so as to control not the time value from the time the software-time device was started, but the difference value between the times of issuing two next commands:

ld n tn-i,

where: tgd - time settings decoder

tn is the time of issuing the n command, tn-i is the time of issuing the (n-1) th command. Frequency dividers 2 and decoder 3 have the number of elements calculated not for the maximum time (from the start to the issuance of the last command), but for the maximum time difference (between two adjacent commands):

- (t ,, - tk-i

t,

max:

20

where: / and

- the longest running time of the software controller,

(4th Omaks - the longest time between two teams.

From the output of the decoder 3, the signals arrive at the output combinational circuit 4, which contains the remote switches 5i-5p and the relay 6i-6 „according to the number of channels of the decoder.

The outputs of the circuit 4 are connected to the outputs of the controller 7.

When the regulator is turned on, the master oscillator 1 generates pulses of a certain highly stable frequency. By entering the input of frequency dividers 2, they change the state of the divider cells (for example, a binary counter cell (trigger), having taken a single pulse at the input, changes its state to the opposite, having received two pulses, returns to its original state, but it gives an impulse to the next cell, which reacts to it similarly.

The decoder 3 continuously monitors the state of the cells of frequency dividers 2, since it determines the time from the moment the software-time device is turned on with a given accuracy. If the state of frequency dividers 2 coincides with the program of the decoder 3, it outputs a signal to the end of communication with the output switching circuit 4 (in the initial state, serially connected contacts a and b). A relay 6 trips, closing its contact, and issues the first command to output 7. After this, the remote switch 5 switches and converts its contact to another stable state. In this case, the signal from the winding of the relay 6i is removed, but its contact remains closed, and the voltage at the first output does not disappear until the capacitor 8, connected in parallel to the winding of relay 6, is discharged. Simultaneously with the output of the first command, the signal arrives at the setpoint bus of the initial state 9 frequency dividers 2.

At the next coincidence of the current and program time values, the signal from the decoder 3 is fed to the winding of the relay 6, and the command at the second output 7 is formed in the same way.

Subject invention

A software controller containing serially connected master oscillators, frequency dividers and a decoder, characterized in that, in order to increase the control accuracy, remote switches and relays are installed according to the number of decoder channels, each of the decoder channels is connected via a remote switch with a relay winding , the output of which is connected to the output of the regulator by the corresponding input of the frequency divider and the operating winding of the remote switch, one of which fixed contacts with Connected by the winding of the downstream relay.

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4h

five.