SU943640A1 - Relay-pulse control for second order object - Google Patents

Description

(54) RELAY-PULSE REGULATOR FOR SECOND-SITE OBJECT

one

The invention relates to automatic relay control systems and can be used to stabilize objects of second order.

Known burr ryugul, contents of the first comparison element connected in series and the three-relay relay element, the output of which is connected to the input, perform the mechanism and, through the flexible feedback element, to the second input of the comparison element, the second input of KOTqporo is connected to the output of the first comparison element, and its output directly and through the delay unit with the first and second inputs of the logic multiplication unit, the output of which is connected via a filter to the second input cient flexible feedback C1 3

The disadvantage of this regulator is the possibility of repetition of a single squaw pulse.

due to the low noise immunity of the controller. The closest to the present invention is a relay-impulse reguttum dp of a second-order object containing a series-connected first adder, an aperiodic unit, a second adder, to the second input of which a control signal is supplied, a three-relay relay element with

to the hysteresis, the output of which is connected to the first input of the first adder and the input of the driver of the output control signals of the expeller organ 2j.

15

A disadvantage of the known device is the poor quality of the second order object control process due to the low noise immunity of the controller.

The purpose of the invention is to increase the quality. The second order object control process by increasing the noise immunity of the controller a. The delivered circuit is achieved by the IGO in the jjonojiioiTenbHO control regulator, the differentiator is connected, the input of which is connected to the output of the control output generator, and the output is connected to the second input of the per-loop accumulator. On fng. JI is a block diagram of the controller; in (} r. 2 is an example of the phase portrait of the control system using this controller; in Fig. 3, the characteristic of the burdock element for a positive input signal. The controller contains the first adder 1, relay relay leg 2, with a hysteresis aperiodic link 3, shaper 4 output control signals of the executive unit, differentiator 5, vsfoy adder 6, control error signal f, control signal U (input signal of the relay element), output signal of the relay element .0 output signal of the aperiodic link Ua, output The control signal of the actuator control generator U, the output signal of the differential switch and the output signal of the second adder Od Differentiator 5 is designed to generate a short impulse signal on the trailing edge of the exhaust signal control of the actuators, which allows for a short time to shift the hysteresis element of the relay element 2 by the amount necessary to ensure that when the signal is interfered with by the interference, it does not turn out to be rotatable; Differential routing link, standby multivibrator, blocking generator are used. The relay pulse controller works as follows. I The control signal C and the output signal of the aperiodic link u are fed to the inputs of the first adder 1, and the error signal Uf is generated at its output, which is fed to the input of relay 2. When the signal U is reached, the output threshold of the relay the relay is ON 51 squared and 2, which is fed to the input of the control signal generating unit 4 and through the first input of the adder 6 to the input of the aperiodic link 3. A differential is connected to the output of the control signal generating unit 5, which generates a short signal of the 04.04 pulsed signal on the falling edge of the control output signal by executive agencies. The generated pulse through the second input of the adder 6 is fed to the input of the aperiodic link 3. The output signal U is equal to O until the error signal (Jj reaches the trigger threshold of the relay fj. When the signal reaches {J. value (and 7 / I), the relay switches on element 2, at the output of which a signal appears and, 2. By this signal, through the driver 4, the executive elements of the control system are turned on, under the action of the cocks, the initial speed of the control error M begins to decrease. The iodic unit 3 of the signal Ug U ,, (the signal U at the output of differentiator 5 is equal to ypo, as during the formation of the output signal of the control of the uncompressed organs), the signal U begins to increase in absolute value. Starting from a certain point in time, the signal Uf decreases and reaches the threshold oi of relay element 2, which, when turned off, removes the signal U / j from the inputs of the adder; 6 and the former 4. After the signal is removed, the former 4 ends the formation of the CKTueaia control of the actuators, which That stop their work. During the generation of the output control signal, 4 sigals at the output of the differentiator 5 disqualifies (is equal to zero) and does not affect the operation of the controller. At the moment of termination of the formation of the control signal of the control of the expelled organs, i.e. over the back (JpoHTy of the output pulse, differentiator 5 forms a short pulse signal, which allows increasing the absolute value of the output signal 0% of aperiodic link 3 by a fixed value G in a short time. Increasing the signal and leads to a short-term expansion of the deadband of the burdock element 2 relative to of the control signal V, which, after the end of the transition process of the aperiodic link 3, caused by the pulse from the output of the differentiator 5, takes its initial position. In addition, with decreasing signal U reappear, conditions for energizing relay element 2, and the described process is repeated.

Similarly, a postopochpny effect is achieved by regulying out by suppressing the dead zone (5 burrs), which prevents the possibility of re-formation of a unipolar impulse due to interference and increases the noise immunity of the controller.

Claims (2)

1. USSR author's certificate No. 630612, clG G05 11/16, 1979. 2. USSR author's certificate According to the application number 2376537, cl. G 05 B 11/16 22.O5.76 (prototype). () , s “- S r figs