Tracking Control of Piezoelectric Actuators with Waveshaping Technique

Abstract:

There are many inherent nonlinear characteristics in piezoceramics material, which result in roll off, phase lag and deteriorate the tracking accuracy in dynamic applications. To improve dynamics, a waveshaping technique is put forth, which is based on fast Fourier transform algorithm, and software to shape the control signals. Using information gathered from frequency response and harmonic analysis with the original control signal applied, 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.

• Periodical: Advanced Materials Research (Volume 459)
• Pages: 91-94
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.459.91
• Online since: January 2012
• Authors: Shu Yan Yang, Hai Feng Wang
• Keywords: Piezoelectric Actuator, Tracking Control, Waveshaping Technique

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