In order to eliminate the position lag for RDSS, a solution is proposed by taking the advantage of less output velocity errors of integrated navigation position system, and a model is built up for RDSS/SINS.

Based on the opening condition of oil well pump traveling valve,considering the reality of late oil extraction,the computational formulas of plunger lagged displacement are deduced,and computation program is compiled to apply to measuring wells on-the-spot.

Measurement and analysis of the pulsed magnetic field phase lag in the ceramic case;

But the phase lag based hysteresis model is mainly applied in approximation of the main loop.

Three main factors,which influence the phase property of piezoelectric micro actuators and their corresponding phase lag,are analyzed.

Study of phase-lag algorithm for unsteady flow of compressor;

The fact is that the AQM controllers possessing the phase-lag property can eliminate the bias against bursty flows.

Introduces a configuration of PLC control system and analyses the progress of automatic control and automatic watch in the system,gives a control method of lagging of water level and introduces the application of Profibus in it briefly.