Rotary inertial piezoelectric actuator and its actuation method with double diamond-shaped series drive mechanism

Abstract

A rotary inertial piezoelectric actuator with a double-diamond series drive mechanism and its actuation method, the actuator is composed of upper and lower baffles, bearings, a rotary output shaft, a double-diamond series drive mechanism and a piezoelectric stack; the double-diamond series The driving mechanism consists of a series double diamond ring, and its internal interference fit is a piezoelectric stack, and there is a friction block where the two are connected in series; the rotating output shaft of the actuator is respectively connected to the upper baffle and the lower baffle through a bearing, and the double diamond is connected in series. The driving mechanism is fixedly assembled between the upper baffle and the lower baffle. When the assembly is completed, the side of the friction block is in close contact with the rotating output shaft; by controlling the voltage sequence and amplitude of the piezoelectric stack, the actuator can drive the load to output bidirectional Rotational movement; the present invention has the characteristics of simple assembly, quick response and precise action.

Description

technical field [0001] The invention belongs to the technical field of inertial piezoelectric actuators, and in particular relates to a rotary inertial piezoelectric actuator with a double-diamond series drive mechanism and an actuating method. Background technique [0002] The working principle of piezoelectric drive is based on the inverse piezoelectric effect of piezoelectric. Piezoelectric drive has small size, high stiffness, high displacement resolution and positioning accuracy, good linearity, high frequency response, no heat, no noise, and easy to control Etc. [0003] Piezoelectric actuators have a wide range of application backgrounds in the fields of life science, medicine and biological engineering, semiconductor and microelectronics, data storage, optics, photonics, optical fiber, metrology and measurement technology, precision machinery and mechanical engineering. Among them, the inertial actuator is based on the inertia-friction piezoelectric drive principle,...

AI Technical Summary

Problems solved by technology

In the past, rotary inertial actuators often used double wafers as the driving element, which had a complex structure and low strength; in addition, the past piezoelectric actuators mostly used the power-on clamp method, and the system was required to maintain power even when the power was off. In output displacement applications, previous actuators could not complete such tasks

Images