Development of system identification for piezoelectric patch actuator

Abd Latib, Mohd Lutfan (2014) Development of system identification for piezoelectric patch actuator. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This report is about the development of System Identification (SI) for piezo patch actuator. The research works on the identification of the piezoelectric actuator models found in the literature are very sparse and limited. Most researchers report on the hysteretic aspect of the actuators without due consideration to other dynamics influence. Therefore the study to determine the transfer function (TF) of highly nonlinear and hysteretic piezoelectric actuator is needed.SI technique is required to work based on direct measurement of input-output data from the patch type piezoelectric actuator. Input and output signals are processed to create a dynamic process model. A suitable instrument and analytical procedure is used to obtain input and outputs. The objective of this project is to determine the transfer function from the system identification that been develop. In line with the main objective, a number of sub-objective are considered which is to model and identify the piezo patch actuator using non linear least square method and to validate and analyze the result by implementing the model output plot and error plot. Result of the transfer function that had been obtained is 0.078368s2 - 8.302s + l .501e04 . 2 .The results were valtdated to ensure that the transfer s + 104.2s + 333.2 function derived is fit well with the experimental output.

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