Waveshaping Technique Used in the Tracking Control of Piezoelectric Actuators
There are many inherent nonlinear characteristics in piezoceramics material, which result in roll off,phase lag and deterioration of the tracking accuracy in dynamic applications. To improve dynamics, a waveshaping technique is put forth, which is based on the fast Fourier transform algorithm and software to shape the control signals. With the original control signal applied, information gathered from frequency response and harmonic analysis can be used, so that new track is calculated to compensate for the system nonlinearity. Experimental results indicate that the proposed waveshaping technique is more effective than the traditional control methods.
Shuyan Yang Haifeng Wang
Department of Mechanical Engineering Qingdao Technological University Qingdao, China 266033 College of Mechanical & Electronic Engineering Qingdao University Qingdao, China 266071
国际会议
南宁
英文
2007-07-20（万方平台首次上网日期，不代表论文的发表时间）