A Novel Trans-scale Precision Positioning Stage Based on The Stick-slip Effect

摘要

This article is focus on developing a novel transscale precision positioning stage based on the stick-slip effect. The stick-slip effect was introduced and the rigid kinematics model of the stick-slip driving was established. The forward and return displacement equations of each step of the stick-slip driving are deduced. The relationship of return displacement and the acceleration produced by friction was obtained by displacement equations. Combining with LuGre friction model, the flexible dynamics model of the stick-slip driving was established and simulated in Simulink software. Simulation results shows that the return displacement will reduce with the acceleration of slider produced by dynamic friction force, the rigid kinematics model was also verified by simulation results. The testing prototype of the stage driving by stick-slip effect was designed and the movement parameters of forward and reverse direction was tested, the results of simulation was verified by the testing datas. However, a problem of the difference net displacement of forward and reverse movement was proposed.