SU394786A1 - VPTB - Google Patents

Description

one

The invention relates to computing devices and can be used by E control or computing machines.

Software devices for controlling the technological process of cyclic distribution of material flows in the presence of a transport lag are known, comprising a control panel, an encoder, a time pulse generator, and a decoder.

However, such devices are difficult to configure when changing the allocation cycle.

In order to automate the process control of the sequential cyclic loading of devices in the proposed software for controlling the technological process of cyclic distribution of material flows, the outputs of the control unit are connected to the inputs of the encoder and the decoder, and the outputs of the encoder and time pulse generator are connected to the inputs of the variable-distribution pulse generator, the outputs of which are connected to the inputs of a time relay unit connected by outputs to the inputs of a decoder.

The drawing shows a block diagram of the proposed software control device.

The control panel /, which has li-Jn outputs, is used to enter information about that.

what output devices; for a given option, the switch-on should periodically operate, in particular, which devices need to be loaded.

The encoder 2, consisting of a set of logical elements "n and outputs, gives information to the pulse distributor 3 with a variable structure about the number of working devices in a given variant

switching on, i.e., how many (1 or 2 ... or n) signals from the output of the control panel 1 are fed to the input of the encoder 2.

If there are signals on any three inputs of the encoder, then an output signal appears.

2z. If there are signals on any two inputs, then output 2 appears.

Generator 4 sets the rhythm of the entire device and the duration of each actuator.

The pulse distributor 3 with a variable structure, having outputs 5i, 3 ... Sn, serves to disperse the pulses coming from the generator and shift them by one clock cycle.

At the same time, the last exit of the encircling device starts the first entrance, forming a ring. The measurement of the ring size occurs depending on the signals at the outputs 2 or 2, or 2.

So, if a signal from output 2 comes from the encoder, signals at outputs 5i and 3 alternately appear, while there are no signals at the other outputs. If from the encoder 2, instead of the signal at output 2, a signal arrives at the output 2n, then all the outputs, 1 should receive signals in series.

Relay block 5 is necessary to take into account the transport delay, which arises due to the fact that the loaded machines are separated from each other at a certain distance, i.e. the relay block 5 shifts the pulses at the outputs: ... Sn pulse distributor 3 by a time equal to the passage of the conveyor point from one apparatus to another.

Signal output 5 | does not shift in time, the signal at output 3 shifts in time q times, at the output 3 - q times, at the output times.

The number q is determined from the following, their formulas

-1n-2l- (l-2)

W. 2 s 2 9n-2 S i-l

f I

i l

 2 1 + 2 3;

n- (n-l)

(in-i 2 1 (1

Decoder 6 with outputs 6i, 62, ... 6p provides switching of inputs to which signals from outputs 5 |, 52 ... 5 "of the time relay block 5 are received on one side and from outputs t, / 2 ... /" control panel 1 on the other hand.

The decoder 6 may consist of a set of logical elements "I. The coincidence of the corresponding signals at the outputs 5 ,, 52, 5z ... 5p with the signals at the outputs / l / 2, - / n causes the appearance of signals at one of the outputs 6i, 62, ... 6p. Thus, the signal from output 3 passes through the decoder 6 and goes to the output which, in this switching variant, has the smallest index (works first in turn).

Signal output 5 | can get to any of the exits depending on the switching option.

The signal from one of the outputs 5 |, b, ... passes through the decoder 6 and goes to the output, which in this variant of the switch operates as the second one.

It can be any of the 6z-6p outputs. The signal from the 5p output only gets to the 6p output, which corresponds to the case when all the devices are working, i.e. the last device is working.

From the group in the "-apparatus loaded by one conveyor, there are possible () options from the inclusion. For example, when "6 can be loaded into one option

the first, third, fifth devices, or in another embodiment, the second, fourth devices. The number of variants is 63. The automatic device with the help of the encoder 2 and the decoder 6 determines the specified switching option and, in connection with it, determines the cycle of operation of each actuator and the sequence of its operation. The loading cycle of any device is equal to the product of the number of devices loaded in a given variant of switching on for the duration of loading t; .

In the proposed automatic device, the loading time of the apparatus is t, i. E.

the duration of the signal at one of the outputs is constant for all switching options. Consequently, the cycle (C) of loading each of the devices is proportional to the number (K) of the devices loaded in the specified variant of switching on.

The limitation for choosing t is the maximum signal delay by a time relay block 5.

T must be greater than or equal to

the time it takes for the conveyor point to move from the first to the last unit.

The operation of the automatic device is as follows.

If there are signals at the outputs / 2, h and In of the control panel /, then they go to the decoders 2 and b. On encoder 2, a signal appears at output 2h, since the sum of all signals is three.

At the outputs of the pulse distributor, signals begin to appear alternately.

In the time relay block, the signals at the outputs 5 |, Sj ... 5 ..., 5 ... 5g ... 5 | 2j are shifted alternately, respectively, by a certain time relative to the signals at the outputs 52 and 3h.

In the decoder 6, the logical elements are alternately triggered, on which signals from the outputs / 2, 5 and / “fall on one side, and on the other hand from the outputs 5i, 5

5g. These signals correspond to the case when the second by the first

The second is the device, the second, the third, the lth.

The signal from output 52 is shifted relative to the signal from output 32 to a time equal to the time and the transition of the conveyor point from the fifth to the last (nth) according to the number of the device. The operation of the AND gates leads to the appearance of signals at the outputs 62, 6, 6p in turn.

Subject invention

Software control device

the technological process of cyclic distribution of material flows, containing a control panel, an encoder, a pulse generator, a variable structure pulse distributor, a time relay unit and a decoder, characterized in that, in order to automate the process, the outputs of the control unit are connected to the inputs of the encoder and decoder, and outputs of the encoder and pulse generator - with inputs of a pulse distributor with a variable structure, the outputs of which are connected to the inputs of a time relay unit connected by outputs to the input E decoder.

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