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This paper proposes a new damping control approach with positive acceleration, velocity and position feedback (PAVPF) scheme for piezo-actuated nanopositioning stages to implement high-bandwidth operation. To achieve this objective, the intrinsic hysteresis nonlinearity of the piezoelectric actuator is firstly handled by a feedforward compensator with a modified Prandtl–Ishlinskii model. Afterwards,...
In this paper, a novel rate-dependent Prandtl-Ishlinskii (P-I) model is proposed to characterize the rate-dependent hysteresis nonlinearity of piezoelectric actuators. The new model is based on a modified rate-dependent play operator, in which a dynamic envelope function is introduced to replace the input function of the classical play operator. Moreover, a dynamic density function is utilized in...
In this paper, a new mathematic model is developed to describe the frequency-dependent and amplitude-dependent hysteresis in a piezoelectric actuator. The developed hysteresis model consists of a family of ellipses with arbitrary major and minor axes and orientation in the 2D plane, relating with frequencies and amplitudes of the control input. To describe the hysteresis characteristics, experiments...
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