This paper illustrates pre - distortion emendation、bias value cortrol and SBS threshold several Key technology in optical transmitter, from studing JIUZHOU 1550nm extra modulate optical transmitter.

To improve the dynamic performance of the deviation control system and solve the motor vibration problem,the deviation control algorithm is proposed,which is related to intelligent PD feedback control combined with the feed-forward regulation for the system deviation,and its MatLab simulation result shows.

To solve the strip deviation problem and the strip alignment performance is heavily influenced by the transport speed in winding process,this paper introduces an advanced deviation control system based on intelligent control which takes DC servomotor as actuator.

Simulation of camber control for rough mill of hot strip rolling;

This paper also presents a method of combined control of pitch and yaw to keep fDC lower,and proposes that the master and slave satellites should keep the same yaw steering law while beam .

In addition, the necessities of yaw steering were analyzed, a yaw stee.

From jacking construction,control survey,deviation rectification,stability calculation and other aspects the construction process of jacking pipe is introduced in order to ensure construction quality.

In light of the properties of incompact sand and silt,the paper introduced the scheme of thin wall caisson used in drilled pile foundation The posibitility of subsidence is predicted and the measures helping sinking are proposed in the sinking process The paper also analyzed the control of deviation rectification and correction of deflection during caisson sinkin