Research On Fuzzy Logic Anti-Swing Control Of Overhead Crane

Eliminating and controlling the swing of load are very important for increasing the work efficiency of crane as well as decreasing hazard during loading and unloading operation. It is an method to lighten the work strength intensity and to improve the bad work condition for the operator by adopting electronic anti-swing device, which also the trend of actualizing the loading and unloading machinery automation. So, this theist discusses the electronic anti-swing device method of over head crane.The basic methods which are feedback control and PID control and LQR optimal control has the shortage in crane anti-swing. So this theist studies the fuzzy control mechanism and designs two fuzzy anti-swing controllers which is "Track-V" fuzzy controller and "Track-VP" fuzzy controller based on details. The theist also gets the improvement in the fuzzy invariable choosing and fuzzy rule building. The new method needs little time to compute and get the high efficiency. And the simulink result shows the good control effect. The swing angle decay to zero in five seconds when the cart stops, and the steady state error is lower than 1%. The "Track-VP" fuzzy control effect is better in velocity and position track than above one and good robustness when having external disturbance.At the end, the theist designs the controller system by analysis steel enterprise condition, and controller gets the good application. The theist builds the control system use the original Electronic Component; just adds only two parts which are angle sensor and the main control computer.