Master-slave control strategy-based design of dual linear motors driven vertical motion systems

The vertical motion system is an important functional component of ultra-precision multi-axis machine tools. However, since the motion direction of the vertical motion system is parallel to the direction of gravity, its load conditions are significantly different from those of the horizontal motion system. This difference causes special requirements for the structural design and control of the vertical motion system. Aiming at the actual working conditions of high-performance vertical motion systems, this paper first gives the overall design of a new vertical motion system; secondly, based on the principle of symmetry, a master-slave control strategy for the vertical motion motor is proposed; thirdly, based on the analysis of the performance requirements of the vertical motion system, the feedback method and components of the vertical motion system are given; on the basis of the above work, a digital control scheme for the vertical motion system is further given; finally, a positioning accuracy test experiment is carried out on the designed new vertical motion system.