some main problems in modelling the electro hydraulic servo loading system are discussed, and an example is given to illustrate the modelling procedure and display the results for a practical system.
抽油机电液伺服加载系统是一种位置扰动型的施力系统 ,存在着非线性、不确定因素及由于位置扰动引起的多余力 ,传统的控制方法不能达到理想的效果 。
the electro hydraulic servo loading system of pumping unit is a kind of position disturbance servo loading system, and there are nonlinear uncertain factors and position disturbance in it.
抽油机电液伺服加载系统是一种位置扰动型的施力系统 ,存在着非线性、不确定因素及由于位置扰动引起的多余力 ,传统的控制方法不能达到理想的效果 。
a kind of hydraulic servo loading system controlled by microcomputer is developed to overcome the shortcomings of the loading methods now used in the performance test of pumping units.
针对目前抽油机性能测试中加载方法的某些不足,设计并研制出一种应用微机控制的液压伺服加载系统。