摩擦条件下面向控制的伺服系统辨识相关分析

面向控制的系统辨识,是以控制器设计为目的而建立系统数学模型的过程。模型的准确性直接影响到控制器的分析与设计。相关分析方法由于其对噪声的强抑制能力和可以直接辨识出系统的时域离散差分模型,至今仍有着广泛的应用。而现实情况中,系统都是本质非线性的,线性化的假设通常会显著地降低系统模型的准确性。本文分析了摩擦对伺服系统的影响,对已有的相关分析法激励信号进行补偿,分析和推导得出补偿后的激励信号参数,给出具体地操作步骤。实验结果证明,此方法可以较好地改善不能忽略摩擦的条件下,面向控制的伺服系统辨识准确性。

Control-oriented correlation analysis identification for servo systems with friction

For detecting the front-view infrared image tracking components manually is inadequate,an improved measuring and control system,which is based on PCI bus,is introduced.The system has two main parts:angle-measuring system,which is composed of rotary transformer and Resolver-to-digital Converter(RDC),and a DC torque motor as actuator for despunning,in view of the measuring standard step.Then,the real-time despuning angle can be shown by acquisition filtering and signal conversion.The measuring and control sys...