SU739685A1 - Overspeed control system for electric generator - Google Patents

Description

7, Trigger 2 together with the one-shot 3 and the second element And b form a logical trigger circuit of the actuating element 7.

Fig. 2 shows the time diagram of the operation of the pre-burned device, where Vf is the signal from the output of the imager; U and U.2. - output voltage from the direct and inverse outputs of the trigger; U is the voltage at the one-shot output; signal on the bus Starting block 7; Vc- inverter output; Sh. - signal on our, Reset ;. B - device output.

The shaper 1 for each half-period of the signal part switches on the counting input of trigger 2, the signals from the outputs of which are passed to the inputs of the elements And 5 and b and the one-shot 3, If the half-period of the signal under investigation is longer than the one-shot time of the single-oscillator 3, then the signals from the direct trigger output 2 and the output of the one-shot 3 through the first element And 5, the actuator 7 is permanently reset to its initial state.

If the half-time of the signal under investigation becomes shorter than the exposure time of the one-oscillator 3, then the signals from the trigger 2 and the one-oscillator 3 output through the second element And b, the actuator 7 starts, the output of which appears

- Using the principle of comparing the half-life of a generator signal with a given dwell time of a single-vibrator (installation) significantly simplifies the design of the device to control the speed of rotation of an electric generator and increase its reliability

The positive quality of the proposed device is a high return rate, defined as the quotient of dividing the release frequency of the device by the response frequency or the half-time of the signal from which the device operates, by the half-time of the signal from which the device releases. Since the actuation of the actuator 7 will occur when the half-period duration of the signal is shorter than the duration of the one-shot 3 exposure by the response time of the actuator 7, and release when the half-period duration of the signal under study will be longer than the duration of the one-shot exposure time of the actuator, then 7 position, the expression for the return coefficient can be written as

CW Wed.I.9. ,,

06 VOIR.I.Z.

- return rate;

de KB T

-time exposure of one-way rator 3;

- response time

complementary element. ta;

; t .- time of return of the actuator,

Using as a actuator 7 symmetric trigger with control by separate inputs, performed on the elements with the necessary-speed, you can provide K 1,

about

Claims (1)

Invention Formula  A device for controlling the speed of rotation of an electric generator, containing a driver, the output of which is connected to the counting trigger input, a one-shot, an inverter, two AND elements and an executive element with control buses 1 Reset and Start, -that to e with so that, in order to increase the reliability of the device, the direct trigger output through the first element C is connected to the bus Reset of the actuator, and the inverse output through the second I-element with bus Starting an actuator and through an odovibrator and an inverter with another input of the first element I / and the second input of the second element I connected to the output of the one-shot. Information sources, . . taken into account in the examination 1, USSR Author's Certificate No. 192953, cl. H 01 H 1/20 f 1964. . 2 i USSR Author's Certificate No. 402987, KL, N. 02. N 7/093, 1971. log in - .Cffcoc VZ  , Zapuen