SU506001A1 - Device for acceleration and deceleration of the engine - Google Patents

Description

equal inputs of the key block 3. At the initial moment, the reversible counter 4 is in the zero state. In this case, all the keys of the block 3 are closed by control inputs. With the signal “start of acceleration” and the control unit 5, the pulses from summing counter 6 are fed to the positive input of the reversing counter 4, which starts counting them. In this case, in accordance with the code of the reversible counter, the keys of block 5 are opened, and the output frequency of the device begins to increase stepwise according to a linear law with the price of each step

BUT

(n - the number of bits of the reversible count 2 "

4) until it becomes equal to the frequency of the pulse generator. fp.

Ramp-up time (braking) is determined

IV-fj

according to the formula Tr, where / Ci 2 -

reversing counter period 4; K - period summing counter 5; / is the frequency at the input of summing counter 6. But to the input of counter 6, a frequency is applied — K-sfp from the subtraction unit 7, where / op is the frequency of the reference pulse pulse in 8; fp is the frequency of the pulse generator 1; Кз is the frequency division factor of the generator. Pulses. The magnitude / Cs depends on the bit of the frequency divider 2, the frequency from which is fed to the subtracting input of the subtracting unit 7. Thus,

t -.

 P t - g g - f

Ion

FIG. 2 shows the curves of the acceleration time (deceleration) as a function of the frequency of the pulse generator /. Curve "L is constructed according to the derived formula nppi

/ (i / C2 1000, / on 2500 Hz, / (, curve "B - at / CiA: 2 1000, Hz, / (H 0.5. For comparison, Fig. 2 shows a straight" C, depicting an ideal characteristic These curves are quite close to the ideal straight "C in the frequency range of / ,, from 100 to 2000 Hz. In the case of the device being used to work in a different frequency range fp, the values of the coefficients Cm K.2, KZ and frequencies / op generator

reference pulses.

Claims (1)

Invention Formula Device for acceleration and deceleration an engine of a flock containing a series-connected summing counter, a control unit, a reversible counter and a block of switches, the other inputs of which are connected to the outputs of the interconnected pulse generator and frequency divider, characterized in that, in order to expand its field of application, -sequentially connected reference pulse generator and a subtractor, the input of which is connected to the output of the frequency divider, and the output to the input of the summing counter. Overclocking Rig. one 2500 10001500 2000 -BUT fp (tei) n, Rig