Based on the numerical solution of Saint Venant Equations and proportional control mode, the author established a computer program for simulating automatic upstream control irrigation canal system.
Nc automatic program is a mainstream of the programming approach in the current numericalcontrol process, and it has a series of merit such as quick speed, short period, high quality and convenience.
Used for brake beam of railway vehicle, the automatic welder, the numericalcontrol system of which is based on the DSP motion control card, has been introduced with details of the key technology.