Research of liquid level control system based on internal model control

The internal model control principle is analyzed in this paper, basis for large inertia and nonlinear characters of a liquid-level control system, a highly robust multiple internal model controller is designed in the paper, and it is used in the three-container liquid level control system. The theory analysis and the experimental results show that the proposed method parameter adjustment is simple, small overshoot; the system can obtain good dynamic and static performance.