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加工过程中随着对精密度和加工环境的要求的不断提高,越来越需要在机床的结构和控制器原理这两者之间进行特殊的组合。近年来,为了补偿进给驱动系统的直线导轨的摩擦造成的影响,人们发明了大量的控制决策,例如[1]—[3]。他们虽然提供了各式各样的功能强大的非线性的机构,但通常又使用相当复杂的计算机算法来耗费系统资源。借助于先进的空气静压轴承技术(FVM—空气—轴承)摩擦可以被彻底消除,因而直线导轨也就不存在爬行现象,而阻尼比和垂直于进给方向的刚度却非常大,这种结构对所使用的控制决策提出了特殊的要求,本文就针对这些要求对各种方法进行了研究。
As the requirements for precision and processing environment continue to increase during processing, there is a growing need for a special combination between the structure of the machine tool and the principle of the controller. In recent years, a large number of control decisions have been made to compensate for the frictional effects of linear guides on feed-driven systems, such as [1] - [3]. Although they provide a wide variety of powerful, non-linear mechanisms, they often consume system resources using fairly sophisticated computer algorithms. With the aid of advanced aerostatic bearing technology (FVM-air-bearing) friction can be completely eliminated, so there is no linear guide crawling phenomenon, while the damping ratio and perpendicular to the feed direction of the stiffness is very large, this structure There are special requirements for the control decisions that are used, and various methods have been studied in the light of these requirements.