Use of accelerometer for precision motion control of linear motor driven positioning system

This paper investigates the advantages of using an accelerometer for precision motion control. The accelerometer output provides an independent measurement of the motion, and may serve as a more accurate source of disturbance information than the position encoder. This additional measurement is advantageous during modeling and system identification as well as during real time control. A novel controller structure for minimal-time point-to-point control using the accelerometer is proposed. Experimental verifications are performed using the NSK linear motor testbed