Aiming at the problems as the nonlinear factors and the position disturbance in the electro-hydraulic servo loading system of pumping unit, the conventional control method cant attain perfect effect.
抽油机电液伺服加载系统存在非线性和位置扰动引起的准确度问题，传统的控制方法不能达到理想的效果。
2
Aiming at solving existing problems for the conventional mechanical close gear test platform, a computer controlled hydraulic loading system is designed.
针对传统的机械闭式齿轮试验台存在的问题，设计了一种计算机控制液压加载系统。
3
It is propose in this paper that the relation of the strength obtained in conventional tests, the long-term strength in rheological tests and the strength under cyclic loading should be studied.