Abstract:
Linear drive is pneumatic actuators that have fast linear motion capabilities. In
general, the movement on the pneumatic actuator can only stop at both ends using a solenoid
valve 3/2. However, it is not matched by the ability to stop at every position of motion. To
be able to stop at any position of motion, it takes a drive like a 5/3 valve analog solenoid that
has a stop function on the system work and also required a reading position sensor from
linear drive movement that serves as a feedback. A research was conducted to expand the
application of a pneumatic system that is designing a control system that can control an
analog 5/3 solenoid valve so that the linear drive actuator can stop at any position of motion
in the form of an analog PID control system by using Op-Amp as its controller component.
The results obtained from testing the linear drive position control system is the actuator can
stop at each position according to the set point that has been given as when the initial position
is set 20 centimeters, to reach the steady state from the 0 centimeter with the air pressure of
4 bar gained rise time of 0.4 seconds and settling time of 4.25 seconds with its steady state
error 0 (zero). When the set point state changes, the linear drive movement can follow the
change at the same time.
