Up and down slope control circuit diagram

This circuit uses Silico ni x DG387CJ solid circuit relay to generate a switch from an up slope to a down slope, decelerating the servo when it is in the new zero position. The slope depends on the adjustment position of R1 and R2. This circuit arrangement ensures the best servo mechanism system response at low cost. A1 detects that the input signal is not zero, and starts the photoelectric isolator A3, causing A4 to switch. The positive ramp generated by A5 moves the system load toward the desired position, causing the feedback voltage of the servo mechanism to offset the control input voltage. When this voltage drops to within 0.7V from the ground potential, A1 outputs " 0 " and A3 is cut off. A4 starts the down ramp waveform to decelerate the system until it stops. For a slope of 20V/s, take C=0.33uF, R3 =1.8M Europe.
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