Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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A Method of Hysteresis Modeling and Traction Control for a Piezoelectric Actuator

  • Sung, Baek-Ju (System Engineering Research Division, Korea Institutive of Machinery & Material) ;
  • Lee, Eun-Woong (Dept. of Electrical Engineering, Chungnam National University) ;
  • Lee, Jae-Gyu (Production/R&D General Division, Tata Daewoo Commercial Vehicle Company Limited)
  • Published : 2008.09.30
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Abstract

The dynamic model and displacement control of piezoelectric actuators, which are commercially available materials for managing extremely small displacements in the range of sub-nanometers, are presented. Piezoceramics have electromechanical characteristics that transduce energy between the electrical and mechanical domains. However, they have hysteresis between the input voltage and output displacement, and this behavior is very demanding and complicated. In this paper, we propose a method of designing the control algorithm, and present the dynamic modeling equations that represent the hysteretic behavior between input voltage and output displacement. For this process, the piezoelectric actuator is treated as a second-order linear dynamic system and system constants are determined by the system identification method. Also, a classical PID controller is designed and used to regulate the output displacement of the actuator. To evaluate the performance of the proposed method, numerical simulation results are presented.

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References

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