High-Q value piezoelectric traveling wave ultrasonic micro-motor based on parallel magnetorheological elastomer
A magnetorheological elastomer, micro-motor technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of low quality factor of ultrasonic micromotors, Achieve the effect of ensuring electromechanical conversion efficiency, avoiding out-of-plane displacement and angular deflection, and high quality factor
Inactive Publication Date: 2019-06-21
麦莫斯成都科技有限公司
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Problems solved by technology
[0008] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a high-Q piezoelectric traveling-wave ultrasonic micromotor based on parallel magnetorheological elastomers, which solves the problem of low quality factor of existing ultrasonic micromotors
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[0036]The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0037] Such as image 3 As shown, a high-Q piezoelectric traveling wave ultrasonic micromotor based on parallel magnetorheological elastomers includes a motor base 2 and a housing 1 arranged on the motor base 2, and the housing 1 is provided with a piezoelectric traveling wave an ultrasonic motor assembly, a first magnetic current pressure adjustment assembly and a second magnetic current pressure adjustment assembly;
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The invention discloses a high-Q value piezoelectric traveling wave ultrasonic micro-motor based on a parallel magnetorheological elastomer. The high-Q value piezoelectric traveling wave ultrasonic micro-motor based on the parallel magnetorheological elastomer includes a motor base and a shell disposed on the motor base; and a piezoelectric traveling wave ultrasonic motor component, a first magnetic current pressure adjusting component and a second magnetic current pressure adjusting component are disposed in the shell. According to the invention, the anchor point is placed at a stable displacement zero point of the stator resonance mode; therefore, the obvious out-of-plane displacement and angular deflection of the anchor point and the cantilever beam are avoided. The energy that the stator loses through the cantilever beam to the surrounding environment is limited to the utmost extent; therefore, the electromechanical conversion efficiency and high quality factor of the system are ensured. The pressure between the stator and the rotor is adjusted through the first magnetic current pressure adjusting component and the second magnetic current pressure adjusting component; and the axial pretightening force of the ultrasonic micro-motor is adjusted by changing the connection or disconnection of the electromagnetic coil.
Description
technical field [0001] The invention relates to the technical field of ultrasonic micromotors, in particular to a high-Q piezoelectric traveling wave ultrasonic micromotor based on parallel magnetorheological elastomers. Background technique [0002] Micro-ultrasonic motor is a new type of driving device designed and manufactured using MEMS technology. Under the excitation of alternating voltage, it uses the inverse piezoelectric effect of the piezoelectric material layer to excite the stator to generate high-frequency micro-amplitude vibration. The tangential friction force drives the rotor to rotate to realize the torque output of the motor, thereby realizing the conversion of electrical energy to mechanical energy. Compared with traditional electromagnetic motors, micro-ultrasonic motors have the advantages of small size, fast response (milliseconds), low speed, high torque, low noise, strong anti-electromagnetic interference and self-locking capabilities, and have broad ...
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IPC IPC(8): H02N2/12H02N2/14H02N2/16
Inventor 周吴
Owner 麦莫斯成都科技有限公司