Due to the multivariable,strong coupling and instability of airplanes,it is very difficult to realize thefly-by-wire system control law in engineering.

With a longitudinal flY-bY-wire control system or mechanical control system, and with/without taking into account the effects of aeroelasticty, variations of flight parameters and results of horizontal tail maneuver loads were given.

This paper mainly introduces the hardware and software design methods of the testing equipment of fly-by-wire control system based on PC/104 bus, it also brings forward the method of using database technology to program testing database and to simplify the testing software programming.

Realization of complicated network on 300 MN die forging hydrostatic press control system;

The original control system of a 300 MN die-forging hydrostatic press has inconvenience for operation,low control accuracy,slow response speed and low reliability.

Based on the analysis of lateral-directional control system of a certain plane, representative fault infecting flying security is specialized; flying security is evaluated; it is found that flying security probability can not be content with the flying safety standard.