This paper,based on the study of a sewage treatment plant,discusses the demerit of traditional control in respect of pumping station,and introduces the characteristic as well as applications of fuzzy control and sequential control on it.

This paper based on the study of a sewage disposal pumping station,discusses the demerit of traditional control in respect of pumping station,and introduces the characteristic as well as applications of fuzzy control and sequential control on it.

Fuzzy contour control strategy for the ultra precision machine tool;

Then on the basis of constructing the semi-closed-loop three-axis machine tool decoupled contour system model,the static decoupled contour controller was studied,and the pitch error compensation method on the decoupled contour system was presented.

In the thesis several key technologies, such as Acceleration /Deceleration control, curve interpolation, servo control and contour control are researched in details aimed at the development of high-performance CNC system.

Feedback linearity technique is combined with PID or sliding mode control to settle problems that tolerance model complex and lack of controller designing method with conventional contouring control approaches.

The plan to select the type of frequency speed regulator according to the collected electrical data and the condition of the site is introduced, the actual application of it in the cam control in steel rolling mill and the problems in operation are discussed, the resolving plan proposed.

By Changing the over-model heavy girder of the turnover machine from the linear contact into point contact as well as by revamping the original point of no return,control circuit,cam controller and hydraulic oil line system the low utilization rate of the machine due to return of part of the charging material and increase of production cost are effectively solved.