SU657407A1 - Follow-up drive speed control - Google Patents

Description

(54) DEVICE FOR CONTROLLING THE VELOCITY OF THE FOLLOWING GO WAVE

all linear zone drive characteristics.

The proposed device differs from the known one in that it introduces signal conditioners proportional to a constant and variable component of a given speed, a driver of a reference signal proportional to a constant component of a given speed, and a second adder whose inputs are connected to the outputs of the signal former proportional to the variable component The specified speed and the first adder, the second input of which is connected to the output of the signal conditioner / proportional constant component speed, and the reference signal driver, which is proportional to the constant component of the given speed, c6.) is not connected to the engine.

FIG. 1 shows the flowchart of the proposed speed control device, where:

  iconsi - voltage proportional to the constant component of a given speed;

U is a voltage proportional to the variable component of a given speed;

the aconst tachogner voltage is proportional to the constant component of the speed to be worked;

U

- tachogenerator voltage

proportional to the variable component of the speed

voltage is proportional to the difference ().

The device contains the first adder 1, the amplifier 2, the motor 3, the tachogenerator 4, the formers 5 and 6 signals proportional to the constant and variable components of a given speed, the second adder 7 forming a 8 of the reference signal proportional to the constant components of a given speed.

FIG. Figures 2 and 3 show the embodiments of the proposed speed follower control device; in fig. 2 - electromechanical servo drive containing erectomotor 9, differential gear 10, additional ejectro device, and DO - voltage at the input of the additional electric motor, proportional to the constant component of the given speed; in fig. 3 is an electro-hydraulic servo drive, where the hydraulic booster 12, the hydraulic motor 13, the device 14 for mechanically moving the hydraulic booster slide.

In the proposed device (Fig. 1), a control signal generator 5, proportional to a constant component of a given speed, is connected to the input of the main adder 1, an additional adder 7 is connected between the adder and amplifier, the second input of which is connected to the control signal generator b of a predetermined speed, and the motor 3 is connected to an additional input of the driver 8 of a reference signal proportional to the constant component of the predetermined velocity and acting not osredstvenno engine.

The proposed device operates in the following manner: the driver of the reference signal 8, which is proportional to the constant component of the given speed, introduced into the device, affects the speed of the engine for a short time, ensuring the shaft rotates at a constant given speed id. In the case of an electromechanical drive (Fig. 2), this action is carried out 35 using an additional electric motor 11 operating on a single shaft with the main electric motor 9 via a differential gear 10. The additional electric motor 11 is supplied with a voltage UQ proportional to the constant component . In the case of an electro-hydraulic drive (Fig. 3), the action is carried out by means of a device 14 5 i mechanical movement of the spool of the hydraulic booster 12, which releases the rotation of the hydraulic motor 13 at a constant speed proportional to the displacement of the spool.

59 The signal Ugj Qng + TaxoreHepaTopa, proportional to the constant component of the working speed, is fed to the input of the adder 1, where it is compensated by the signal of the driver, the proportional constant component of a given speed.

Claims (2)

Subject to the compensation of the Miconst aconst signals of the second adder 7, a signal is received (J proportional to the variable component of the speed to be processed. To another input of the second adder 7, the signal U / from the former 6 is proportional to the variable component of the given speed. As a result of subtracting these signals in the adder 7 The Uvnp control signal is proportional to the difference to the input of Amplifier 2 (u2}) Thus, in the proposed follower drive speed control device, the linear part of the characteristic the drive is used to monitor the variable component of a given speed, which makes it possible to reduce the error on the retractable speed and thereby improve the accuracy. </ BR> Formula for controlling the speed of a tracking drive containing a series-connected amplifier, motor and tachogenerator, output. ti Consf- i / zo input 1 of the first one is connected to the balancing adder, so that. with a circuit for improving the accuracy of the device, signal formers proportional to a constant and variable component of a given speed, a driver of a reference signal proportional to a constant component of a given speed, and a second adder whose inputs are connected to the outputs of a signal generator a given speed and a first adder, the second input of which is connected to the output of the signal generator ia, proportional to the constant component of the given speed, and ormirovatel reference sngnapa proportional constant predetermined velocity sostavp yush.ey connected to a motor. Sources of information taken into account in the examination 1.Patent of France No. 2145347, cl. G05 B 11 / GS, 1973. 2. Bessekersky V. A. - Dynamic synthesis of automatic control systems. M ,, HayKa j 197O, p. 238.  .., .. ,; i  r., h ™) Z /, Canif