SU505997A1 - Multichannel regulating device - Google Patents

Description

one

This invention relates to the field of automatic control.

Multichannel regulating devices are known that contain in each channel a sensor, a setting device, an isodromic feedback unit, the outputs of which are connected to the corresponding inputs of the relay unit, the common channel, two channels of the majority block, the inputs of one of which are connected to the outputs "More, and the inputs of the other To the outputs of the “Alye” relay blocks, the outputs of the majority blocks are connected to the inputs of the control unit, the output of which is connected to the regulator through an actuator. However, the known devices do not provide a sufficiently high quality transient process.

The purpose of the invention is to improve the dynamic characteristics of the device. This is achieved by the fact that in it the inputs of the isodromic feedback units are connected to the outputs of the respective majority blocks. In each channel between the inputs of the podfrom feedback block and the outputs of the majority blocks, resistors are included, and between the inputs of the isodromic feedback blocks and the device bus, there are keys, the control inputs of which are connected to the Outputs and the Smaller Relay Block.

The drawing shows the block diagram of the device.

The device contains sensors 1, setting units 2, relay blocks 3, blocks of isodromic feedback 4, majority blocks 5 implementing logic τ of n (where t, 2, 3,4, ...;, 2, 3, 4 ,. ..), control unit 6, actuator 7, regulatory authority 8.

In addition, the device may contain in each channel resistors 9 between the inputs of the isodromic feedback blocks 4 and the outputs of the blocks 5, as well as the keys 10 between the inputs of the isodromic feedback blocks and the common bus of the device. The control inputs of the keys 10 are connected respectively to the outputs "More and" Less than the relay unit 3.

The operation of the device is considered in relation to 7P 2 and l 3.

The device works as follows. If the parameter deviates from the specified value by an amount exceeding the dead zone of the relay unit 3, the output of the “More or less than the block 3” is a control signal that is fed to the input of the corresponding block 5.

However, on the output of block 5, the output signal does not occur until it works in the same

side regulating unit of the second channel. The excitation of two channels in the same direction (for example, "More) results in the appearance of a control signal in the same direction at the output of the corresponding block 5. This signal is fed to the input of the control unit 6, as well as to the input of the isodromic feedback 4 in with a signal of a poshchnbka. Appropriate phasing is ensured by the fact that one block of 2 out of 3 forms a positive control signal, and the second a negative one. An increase in the signal at the output of the feedback unit leads to the disappearance of the output signal of the relay unit 5. And with the number of excited channels, less than two, the control signal at the output of unit 5 disappears and the regulator movement stops. When the output voltage of the block 5 is removed, the output voltage of the nzodromnogo feedback unit decreases, that if an error signal is stored, the relay unit will turn on again in the same direction and a pulsating mode of operation of the individual regulating units and the device as a whole will appear. The adjustment process ends after the adjustable parameter returns to the set value. In order to prevent or stop the charging of the isodromic feedback unit 4 in the channel with an inoperative or disconnecting relay unit 3, the device provides resistors 9 and switches 10.

When the output signal appears, the "More than the relay unit 3 translates into the open state of the key 10. When the output signal disappears at the output of" More than unit 3, the specified key is switched to the closed state, stopping the charge of the isodromic feedback unit.

Similarly, the charge of the nzodromnoy feedback block 4 is terminated by the voltage from the output of the second block 5, which forms the signal "Less than the relay block 3 of its channel.

It is possible to switch the keys 10 in series with resistors 9. In this case, the output signal of the relay unit 3 switches the key 10 to a closed state, allowing the feedback unit 4 to charge.

Claims (2)

1. A multichannel regulating device containing in each channel a sensor, a setting device, an isodromic feedback unit, the outputs of which are connected to the corresponding inputs of the relay block, two majority blocks for all channels, the inputs of one of which are connected to the “More” outputs - to the outputs "There are fewer relay blocks, the outputs of the majority blocks are connected to the inputs of the control unit, the output of which is connected through an actuator to a regulating authority, characterized in that, in order to improve the dynamic characteristics the device performances, the inputs of the isodromic feedback units are connected to the outputs of the respective majority units. 2. The multi-channel regulating device according to claim 1, characterized in that in each channel between the inputs of the isodromic feedback unit and the outputs of the majority units there are resistors, and between the inputs of the isodromic feedback units and the common bus of the device are keys whose control inputs are connected respectively to the outputs “More and“ Less than the relay unit.