Non-smooth model and numerical analysis of a friction driven structure for piezoelectric motors

A non-resonant piezoelectric linear motor with alternating normal contact force is developed to realize a piezoelectric linear motor with high precision, large stroke, and strong thrust. The motor employs four piezoelectric stacks to excite the non-resonant state vibration of two driving feet, which alternately push the mover to generate unidirectional motion. Through the analysis of the working principle of the motor, the structure of the motor is designed and manufactured. The test results show the feasibility of the motor. Furthermore, the operating results show that the flatness of the contact surface strongly affects the performance of the motor. The design criteria of the motor are proposed, thus providing a basis for the optimization of the motor.

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The Roles of Piezoelectric Ultrasonic Motors in Industry 4.0 Era: Opportunities and Challenges

Wankhede¹,

Xu²

2021

Piezoelectric Actuators - Principles, Design, Experiments and Applications

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Piezoelectric Ultrasonic motors (USM) are based on the principle of converse piezoelectric effect i.e., vibrations occur when an electrical field is applied to piezoelectric materials. USMs have been studied several decades for their advantages over traditional electromagnetic motors. Despite having many advantages, they have several challenges too. Recently many researchers have started focusing on Industry 4.0 or Fourth Industrial revolution phase of the industry which mostly emphasis on digitization & interconnection of the entities throughout the life cycle of the product in an industrial network to get the best possible output. Industry 4.0 utilizes various advanced tools for carrying out the nexus between the entities & bringing up them on digital platform. The studies of the role of USMs in Industry 4.0 scenario has never been done till now & this article fills that gap by analyzing the piezoelectric ultrasonic motors in depth & breadth in the background of Industry 4.0. This article delivers the novel working principle, illustrates examples for effective utilization of USMs, so that it can buttress the growth of Industry 4.0 Era & on the other hand it also analyses the key Industry 4.0 enabling technologies to improve the performance of the USMs.

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Non-smooth model and numerical analysis of a friction driven structure for piezoelectric motors

Cited by 3 publications

References 37 publications

Encoder position feedback based indirect integral method for motor parameter identification subject to asymmetric friction

Encoder position feedback based indirect integral method for motor parameter identification subject to asymmetric friction

Non-resonant piezoelectric linear motor with alternating normal contact force

The Roles of Piezoelectric Ultrasonic Motors in Industry 4.0 Era: Opportunities and Challenges

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