Central Shutter Control Based on Dual-mode Controller

Traditional phase-lag compensation has disadvantages of large overshot,long transition,and so on.So it is hard to meet the requirement of the central shutter control system.A dual-mode controller is designed which combines the bang-bang control with traditional 2-order phase-lag compensation and integrates the advantages of them and it can reduce the overshoot of the system greatly in the required responding time.The dual-mode controller design,Simulink simulation and experimental validation for the central shutter are given,and switching condition between the two controllers is analyzed here.It is found that using dual-mode controller the system overshoot can be reduced to 10%when comparing with pure phase-lag compensation.The experiment result indicates that it attains satisfactory result to use dual-modes controller in central shutter system,and provides a feasible method for related domains.