Application of Modeling and Control Approaches of Piezoelectric Actuators: A Review

Abstract

Piezoelectric actuators find extensive application in delivering precision motion in the micrometer to nanometer range. The advantages of a broader range of motion, rapid response, higher stiffness, and large actuation force from piezoelectric actuators make them suitable for precision positioning applications. However, the inherent nonlinearity in the piezoelectric actuators under dynamic working conditions severely affects the accuracy of the generated motion. The nonlinearity in the piezoelectric actuators arises from hysteresis, creep, and vibration, which affect the performance of the piezoelectric actuator. Thus, there is a need for appropriate modeling and control approaches for piezoelectric actuators, which can model the nonlinearity phenomenon and provide adequate compensation to achieve higher motion accuracy. The present review covers different methods adopted for overcoming the nonlinearity issues in piezoelectric actuators. This review highlights the charge-based and voltage-based control methods that drive the piezoelectric actuators. The survey also includes different modeling approaches for the creep and hysteresis phenomenon of the piezoelectric actuators. In addition, the present review also highlights different control strategies and their applications in various types of piezoelectric actuators. An attempt is also made to compare the piezoelectric actuator’s different modeling and control approaches and highlight prospects.

Review on the Nonlinear Modeling of Hysteresis in Piezoelectric Ceramic Actuators

“…As previously mentioned, temperature changes and mechanical loads can alter the relative positions of positive and negative charge centers in the crystal cells of piezoelectric ceramics, which seems to be a microscopic explanation for the influence of temperature and load on the slope of the hysteresis curve. The influence of the frequency of the input voltage on the width of the hysteresis curve is mainly related to the vibration of the piezoelectric actuator [112,122]. References [112,121,123] point out that the switching and movement of domain walls are the main reasons for hysteresis nonlinearity.…”

Role of Computational Material Science in Improving the Properties of Piezoelectric Smart Materials: A Review

“…Computational material science (CMS) has emerged as a potent instrument, effectively employing computer simulations and theoretical models to interpret the complex relationships between material structure and properties. By providing valuable insights into the fundamental behavior of materials at the atomic and molecular scales, CMS has paved the way for designing and optimizing novel materials with customized properties [1]. An exemplary class of materials that has greatly benefitted from this collaboration is smart materials, particularly piezoelectric smart materials.…”