This increase can be achieved by the application of the drilling at a constant penetration rate based on the footing per cycle.

Grid-connected Dynamic Simulation and Analysis on Wind Generation System of CSCF and VSCF;

The two main ways to generate electricity in the large and middle scale wind field are Constant Speed Constant Frequency (CSCF) asynchronous generator and Variable Speed Constant Frequency (VSCF) doubly-fed asynchronous generator.

The Development of Polishing Machine Admitting of Changing-direction Grinding with Constant Velocity;

Pump, air pump and so on generally is pulling by squirrel - cage motor, moving in constant velocity.

This paper introduces the application of PLC in the control of getting a constant speed of the locomotive,which not only can reduce the cost,but also can make it sure that the locomotive work at a stable state.

After a mathematical model of saddle shaped curve being built up, a constant speed control for forming saddle shaped curve is presented to meet the requirement of uniformity of resultant feedrate.

And according to the engine condition,the advanced fuzzy control technology has been adopted,the experience for engine steady speed control accumulated and a fuzzy controller made to control the engine running underr the steady speed.