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一、前言第九章讨论了电液伺服的功率。即绘制负载图,使伺服伐和油缸的 f-v 曲线与负载图重合,由此决定伺服伐的容量和油缸面积。对不能描绘负载曲线的负载或运动波形的场合,先确定适当的伺服伐和油缸,并以其 f-v 曲线来推定响应特性。本章将叙述:按油缸和负载质量产生的二次滞后系统的计算方法;考虑伺服放大器、伺服伐、检测器等各环节的传递函数(开环传递函数)计算方法,回路增益的确定方法,以及回路增益和伺服的稳定性之间的关系。
I. Introduction Chapter IX discusses the power of electro-hydraulic servo. That is, the load map is drawn so that the f-v curve of the servo cut and the cylinder coincides with the load map, thus determining the servo logging capacity and cylinder area. For load or motion waveforms where the load curve can not be plotted, determine the appropriate servo cut and cylinder, and use the f-v curve to estimate the response. This chapter will describe how to calculate the secondary lag system based on cylinder and load mass, how to calculate the transfer function (open loop transfer function) of servo amplifier, servo logging and detector, and how to determine the loop gain, and Relationship between loop gain and servo stability.