Electromagnetic piezoelectric hybrid drive multi-degree-of-freedom motor

Abstract

The invention provides an electromagnetic piezoelectric hybrid driving multi-degree-of-freedom motor and belongs to the technical field of motors. The motor comprises a shell, a rotor and a stator. The outer contour of the rotor is in a convex spherical shape. A rotor permanent magnet is arranged outside the rotor. The upper end of the rotor is fixedly connected with the output shaft. The rotor isrotatably connected with the base of the lower end through a joint bearing; the stator comprises a stator iron core and a winding. The stator is a concave spherical shape; the shell or the stator isprovided with a rotor deflection piezoelectric driving device. The motor has the advantages that the structure is simple and compact. The motor can quickly response to passive self-lock, can realize rotation and a certain angle deflection, does not generate electromagnetic interference and is not interfered by external electromagnetic signals, has high control and positioning precision, can be microminiaturized easily and is convenient to be used; the motor not only can work on occasions with low rotating speed and large torque, but also can work at occasions with high rotating speed and low torque, and also has the advantage of piezoelectric driving and electromagnetic driving.

Description

technical field [0001] The invention belongs to the technical field of motors. More specifically, it relates to electromagnetic piezoelectric hybrid drive multi-degree-of-freedom motors. Background technique [0002] According to the mechanical principle, the mechanism has the number of independent motion parameters that must be given when determining the motion (that is, the number of independent generalized coordinates that must be given in order to determine the position of the mechanism), which is called the degree of freedom of the mechanism. A multi-degree-of-freedom motor is a motor whose output shaft can move with two or more degrees of freedom. [0003] With the continuous development of modern intelligent industry, the requirements for the precision, integration and flexibility of multi-degree-of-freedom motion actuators are increasing. The multi-degree-of-freedom motion actuator composed of traditional single-degree-of-freedom motors cannot meet the requirements...

AI Technical Summary

Problems solved by technology

The multi-degree-of-freedom motor with electromagnetic drive is suitable for working at high speed and low torque, but its complex structure is difficult to achieve miniaturization, and the control and positioning accuracy is low, so it is not suitable for application in precise workplaces

Piezoelectric-driven multi-degree-of-freedom motors are compact in structure, flexible in design, easy to miniaturize, self-locking, fast in response, and free from external electromagnetic interference, especially suitable for low-speed and high-torque applications; but piezoelectric-driven motors have a short life , not suitable for continuous operation

Images