Voice coil actuator based on non-linear membrane spring
A non-linear actuator technology, applied in the field of structure and mechanism, can solve the problems of low-frequency resonance between vibration isolation system and equipment, system instability, low resonance frequency of vibration isolation system, etc., achieve good high-frequency vibration isolation performance, eliminate The effect of motion clearance and adverse effects of friction
Inactive Publication Date: 2012-12-12
BEIHANG UNIV
View PDF7 Cites 9 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
After the active control link fails, the system evolves into a passive vibration isolation system. Since the resonance frequency of the vibration isolation system is designed to be very low, it is easy to induce low-frequency resonance between the vibration isolation system and the equipment. At this time, the relative displacement between the mover and the stator can easily exceed The stroke of the actuator, and then the collision, makes the system in an unstable state, which is unacceptable in fields with high reliability requirements such as aviation and aerospace
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] The present invention aims to provide a voice coil actuator based on a novel nonlinear membrane spring, its specific structure is as figure 2 As shown, the chassis 2 is fixed on the bottom of the stator 3 of the voice coil motor, and is used to fix and support the stator 3 of the voice coil motor; The coaxiality between cylinder 1 and voice coil motor stator 3; one end of the mover top cover 5 is fixedly connected with the voice coil motor mover 4, and the other end is fixedly connected with the inner ring of the diaphragm spring 11; the inner ring of the diaphragm spring 11 passes through the inner limit The bit block 6 is pressed tightly with the top cover 5 of the mover, and the outer ring is pressed tightly on the outer cylinder 1 by means of a film spring washer 7 and a cover plate 8 . The cover plate 8 is fixedly ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a voice coil actuator based on a non-linear membrane spring, which is mainly used for vibration isolation. The power source of the voice coil actuator based on the non-linear membrane spring adopts a cylindrical voice coil motor; a voice coil motor rotor and a voice coil motor stator are connected by a membrane spring; by a special non-linear membrane spring design, relative displacement between the voice coil motor stator and the voice coil motor rotor at the lower frequency band and the resonance band is reduced by utilizing the non-linearity of membrane spring restoring force under the condition that active control fails; and at a high frequency band, the relative displacement between the stator and the rotor is kept consistent with that of the voice coil motor adopting a linear membrane spring without affecting the high-frequency vibration isolation performance so as to improve the safety and the reliability of the system. The power source of the voice coil actuator based on the non-linear membrane spring, which is disclosed by the invention, has a good application prospect in the fields such as a precise motion control and vibration platform and an active vibration reduction system, and is especially suitable for fields such as aviation and aerospace which have a strict requirement on the reliability.
Description
technical field [0001] The invention relates to a voice coil actuator based on a nonlinear membrane spring, which belongs to the technical field of structures and mechanisms. Background technique [0002] Voice coil motor is a special linear motor, which is a transmission device that directly converts electrical energy into linear or arc motion mechanical energy without any intermediate conversion mechanism. Its working principle is similar to the voice coil of the loudspeaker, using the interaction between the magnetic field from the permanent magnet steel and the magnetic field generated by the energized coil conductor to generate regular motion. Because the voice coil motor can obtain linear motion without a rotating mechanism, there is no transmission mechanical wear, and it has the advantages of no hysteresis, high response, high acceleration, small size, good force characteristics, and convenient control. Cylindrical voice coil motor series are widely used in the mark...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H02K33/18
Inventor 李伟鹏黄海袁顺宁郑新涛柏杨
Owner BEIHANG UNIV