SU425160A1 - - Google Patents

Description

one

The invention relates to automatic control systems and can be used to build high-quality tracking systems of radio telescopes, optical telescopes, and radar stations that control one common load from two different input effects, one of which cannot be directly measured.

A two-channel tracking system is known, comprising a main drive including a first sensitive element and an adder, the output of which through the power unit of the main drive is connected to the load, a tracking drive comprising a second sensitive element whose output through the error generator is connected to the input filter amplifier, and integrator.

The proposed two-channel system differs from that known in that it additionally contains a compensation unit, a control unit, a switching unit, a multiplication unit, the first, second and third keys, while the output of the first sensing element is connected to the adder input through the first key, the input of the compensation unit is connected the system input terminals, and the output directly with the input of the adder and the control input of the switching unit, and through the second key - with the first input of the multiplication unit, the input of the voltage regulator is connected to the output of the first sender itelnogo element, and an output - to the control inputs of the first, second and third keys, the third key input connected to the output of filter-amplifier, and the output-adder to the input of the direct and via series-connected switching unit, an integrator and multiplying unit.

This improves the accuracy of the system and the quality of transients.

The block diagram of the proposed two-capalp system is shown in the drawing.

It contains the main drive 1, the tracking drive 2, the compensation unit 3, the first key 4, the control unit 5, the first sensing element 6, the second switch 7, the adder 8, the power unit of the main drive 9, the load 10, the BTOpofi sensing element 11, the forming unit errors 12, filter amplifier 13, third key 14, switching unit 15, integrator 16 and multiplication unit 17.

In the drawing and in the description, the designations are denoted:

"And (O-true input effect;

a „(/) - predicted input effect;

BS / K (/) -ko.mpenziruyuschiy signal;

0ii (0 - error o.n (t);

0, i (/) - error working off ai (L;

o; o (0 is the angle of the rotation of the ugrhzki;

ac (/) -signal at the input of the drive power section during the signal processing 0) i (/).

The proposed system works as follows.

When testing the predicted input action an (0 signal proportional to the difference Qn (t) an (i) -ao) (0 and produced by the first sensitive element 6, through a closed key 4 and the adder 8 enters the input of the power section of the drive 9, which turns the load 10 angle ao (). To compensate for the error component proportional to the predicted speed, a compensating signal is fed to the input of the adder 8 from the output of the compensation unit 3. At the same time, the keys 7 and 14 are open and the drive for tracking 2 does not affect the operation of the drive 1.

When error 6p is reached (0 of drive 1, the required value is triggered by keys 4, 7, and 14. The key 4 opens the drive 1 fault circuit, key 7 connects the output of compensation block 3 to the input of multiplier 17, and key 14 closes the circuit of the compensating drive of the snooping drive 2. The second sensitive element 11 determines the error 0 and (/) ai (0- "olO, the error-shaping unit 12 produces a voltage proportional to Hey (O, which through the filter amplifier 13 smoothing the noise present in the signal bi (), closed the key 14 and the adder 8 are fed to the input of the power unit of the actuator 9, turning the load at a certain angle ao (0- At the same time, the signal from the output of the key 14 through the switching unit 15, changing the sign of the input signal depending on the sign of the predicted speed, goes to the integrator 16 The output of the integrator is fed to the input of multiplier 17, where a compensating signal is generated (0:

ifotn

MBN (About sign. Rf

d (.o

dt

 dt

(t) dL

The compensating signal (/) is fed to the input of the adder 8 and tends to reduce the error Ep {0 to zero.

Subject invention

A two-channel tracking system comprising a main drive including a first sensitive element and an adder, the output of which through the power unit of the main drive is connected to a load, a tracking drive comprising a second sensitive element whose output through the error shaping unit is connected to the filter input Amplifier, and an integrator, characterized in that, in order to increase

accuracy of the system and quality of transients, a compensation block, a control block, a switch block, a multiplier block, the first, second and third keys are entered into the system, the output of the first sensing element is connected via a first key to the input of the adder, the input of the compensation block is connected to the terminals the system input and the output with the input of the adder and the control input of the switching unit directly and through

the second key is with the first input of the multiplication unit, the input of the control unit is connected to the output of the first sensing element, and the output is connected to the control inputs of the first, second and third keys, the input of the third key

connected to the output of the filter amplifier, and the output to the input of the adder directly and through a series-connected switching unit, integrator and multiplication unit.