研究目的
To verify the feed-forward control for second eigenfrequency using the differential flatness approach for the piezoelectric actuator.
研究成果
The differential flatness approach provides an effective method to simplify the difficulty of controlling the piezoelectric actuator. The results showed that there was a slight difference between the real actuator displacement and the calculated displacement at a frequency of 100 Hz. The distortion increased at higher frequencies of 200 and 300 Hz.
研究不足
The distortion increased at higher frequencies of 200 and 300 Hz. The distortion came from the amplifier. This in turn affected the displacement bimorph.
1：Experimental Design and Method Selection:
The feed-forward control for a piezoelectric actuator using differential flatness approach was designed. The differential flatness approach was used to calculate the required voltage to control the piezoelectric actuator movement.
2：Sample Selection and Data Sources:
A piezoelectric actuator Bimorph cantilever beam was used in the experiments.
3：List of Experimental Equipment and Materials:
The impedance analyzer HP 4192A was used to measure the parameter of a piezoelectric actuator. The Power Amplifier Type 2713 was used in driving electrostatic actuators.
4：Experimental Procedures and Operational Workflow:
The control voltage was applied to the real actuator. The simulation and experimental results were compared for the actuator.
5：Data Analysis Methods:
MATLAB was used to process the data from the impedance analyzer and measure the parameters by plotting the data—frequency response locus—in complex plane.
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