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The customers who used the hydroulic system desire the product that has more detailed specification quickly during the industrial technology is developed. Every researcher try to reduce the developed period and to satisfy the customers` desire. Lot`s of simulation software and hardware already was used to be satisfied those purpose. But these kind of equipment need a lot of cost to set up and technical knowledge to drive that system. This paper concerns about analog PID controller that can be assembled with a few resistor, condenser and optional amplifier and doesn`t need technical knowledge to drive. At the first, the plant was modeled mathematically to design the analog PID controller`s circuit. After that, PID controller`s parameter was selected by customers` desire. Finally, the analog PID controller`s circuit was assembled from the control law. The circuit`s availability was confirmed by step response test in the controlled system.

A Study on PID Control Law's Realization for 2-Stage Proportional Pressure Control Valve with Analog Controller