A multiple excitation method with adjustable performance of ultrasonic motor
An ultrasonic motor and excitation technology, which is applied to generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc. A single method, etc., to achieve the effects of easy processing, simple modal excitation, and a wide range of applications
Inactive Publication Date: 2019-11-01
HENAN NORMAL UNIV
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Problems solved by technology
However, ultrasonic motors usually have only one excitation method, and the excitation method is single. Therefore, once the motor is processed, its output performance is fixed, which is difficult to adjust and improve, and the working mode of the motor is fixed and cannot be changed during use.
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[0029] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0030] A multiple excitation method with adjustable performance of an ultrasonic motor, said multiple excitation method comprising the following steps:
[0031] Step 1: Use finite element software ANSYS to conduct modal simulation on the initially determined motor structure to optimize the structural size of the motor and determine the resonance mode that can be selected for normal operation of the motor;
[0032] Step 2: Use the finite element software ANSYS to simulate the harmonic response according to the size of the motor determined in Step 1, and obtain all available excitation methods of the motor and the output displacement of the motor driving point under various excitation methods;
[0033] Step 3: Divide each excitation component in the various excitation components in the motor into multiple partitions to further realize the adjustable performance of the ...
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Abstract
The invention discloses a multi-excitation method with adjustable performance of an ultrasonic motor. The ultrasonic motor comprises a stator and a rotor. The stator is of a hollow and symmetrical structure, and is formed by compositing a metal base tube having an outer wall being cut into eight faces and two groups of piezoelectric ceramic sheets attached to an outer surface of the metal base body; surfaces of the piezoelectric ceramic sheets are plated with electrodes uniformly distributed in the thickness direction; the stator operates in a resonance state, and the working mode is a vibration mode in two second-order planes having a certain included angle in the space. The motor is small in thickness, is simple in a pre-pressure mechanism, is easy in processing of piezoelectric ceramics, is low in cost, is large in output displacement, is low in driving voltage, is easy to realize miniaturization of the whole motor, is particularly suitable for thinning and miniaturization special use occasions such as biology, medical, micro-mechanical, automatic control, optical lens, robotics and aerospace defense technology.
Description
technical field [0001] The invention relates to the field of ultrasonic motor control, in particular to a multiple excitation method with adjustable performance of the ultrasonic motor. Background technique [0002] Due to the characteristics of compact structure, easy processing, low cost, simple modal excitation, easy miniaturization and high energy density, ultrasonic motors have been widely used in precision drives and semiconductor industries. However, ultrasonic motors usually have only one excitation method, and the excitation method is single. Therefore, once the motor is processed, its output performance is fixed, which is difficult to adjust and improve, and the working mode of the motor is fixed and cannot be changed during use. Therefore, the present invention proposes a multiple excitation method with adjustable performance of the ultrasonic motor, so that the output performance of the motor is different under each excitation method. At the same time, during the...
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IPC IPC(8): H02N2/00
CPCH02N2/0075
Inventor 李冲鹿存跃张林庆
Owner HENAN NORMAL UNIV