Mechanical Drift of Ultrasonic-Linear-Motor-Driving Motion Platforms
During the experiment of cell poking, it is required that the point of a probe is aimed at the cell with the help of a precision motion platform, and then, controlled by this motion platform, the tip of the probe pokes into the cell.When these operations are done, the driving force of this platform will be removed.But within a certain period (for example, an hour), the platform doesnt stop moving.This kind of movement, which should be only several microns, is termed in this paper as the mechanical drift of ultrasonic linear motors.Experiments show that the forms used for clamping the stator is one of the factors that affect the mechanical drift.It is studied through experiments the impacts of several clamping forms on mechanical drift, the drift values relationship with the slide rails damping and the motors step size, and how the drift dircction is related to the motion direction.The mechanism of mechanical drift of ultrasonic linear motors has also been explored preliminarily.This kind of research will facilitate refinements of the design and control methods for ultrasonic linear motor as well as motion platforms.
ultrasonic linear motor precision positioning mechanical drift
Jin Sha Zhi-yuan Yao Ran-ran Geng
State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
国际会议
the 3nd International Conference on Digital Manufacturing & Automation (第三届数字制造与自动化国际会议(ICDMA 2012))
桂林
英文
1311-1316
2012-08-01（万方平台首次上网日期，不代表论文的发表时间）