Deflection piezo-driven multi-degree-of-freedom motor

Abstract

The invention provides a deflection piezoelectric driving type multi-degree-of-freedom motor, and relates to the technical field of multi-degree-of-freedom motors. A rotor comprises a spherical-crown-shaped shell on which an output shaft is fixed. A stator comprises a rotor stand column and a deflection piezoelectric driving device. A plurality of deflection piezoelectric driving devices are arranged above the rotor stand column. Each deflection piezoelectric driving device comprises a top pressing type pre-pressure mechanism in contact with the inner side of the spherical-crown-shaped shell,wherein the top pressing type pre-pressure mechanism has a pre-pressure. The technical problems that in the prior art, an existing electromagnetic driving structure is complex, the miniaturization isdifficult to achieve and the like are mainly solved. The deflection piezoelectric driving type multi-degree-of-freedom motor is small in size, flexible, high in control precision, high in response speed, capable of realizing the passive self-locking, convenient to use and wide in application range. The autorotation and the deflection can be separated. The mutual influence of the autorotation control and the deflection control is avoided. The motor is suitable for continuous operation.

Description

technical field [0001] The invention relates to the technical field of multi-degree-of-freedom motors. Background technique [0002] With the advancement of modern science and technology, more and more attention has been paid to the multi-degree-of-freedom integrated drive technology. Multi-degree-of-freedom motors have become an important research direction. Electromagnetic-driven multi-degree-of-freedom motors are suitable for high-speed and low-torque operations; however, their complex structures are difficult to miniaturize and are not suitable for precise workplaces. Therefore, it is urgent to study a piezoelectric ceramic driven multi-degree-of-freedom motor with compact structure, small size, flexible structure, easy miniaturization, self-locking, fast response and wide application. [0003] In addition, there are generally two ways of more practical multi-degree-of-freedom motor drive: electromagnetic drive and piezoelectric ceramic drive. Piezoelectric ceramic dri...

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a deflection piezoelectric driven multi-degree-of-freedom motor, which mainly solves technical problems such as complex electromagnetic drive structure and difficulty in miniaturization in the prior art.

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