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A multi-degree-of-freedom voice coil vibration isolation structure and its control method

A control method and technology with degrees of freedom, applied in mechanical oscillation control, control/regulation systems, non-electric variable control, etc. Influence and suppress the effect of direct interference

Active Publication Date: 2018-12-28
北京航宇振控科技有限责任公司
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Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned problems, overcome the deficiency that the existing technology cannot simultaneously isolate and suppress vibration, provide a multi-degree-of-freedom voice coil vibration isolation and vibration suppression structure and its control method, and greatly reduce the impact of base bandwidth vibration on installation. The influence of precision equipment on the platform

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  • A multi-degree-of-freedom voice coil vibration isolation structure and its control method
  • A multi-degree-of-freedom voice coil vibration isolation structure and its control method
  • A multi-degree-of-freedom voice coil vibration isolation structure and its control method

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with accompanying drawings and examples.

[0043] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, the present invention is a multi-degree-of-freedom voice coil vibration isolation and vibration suppression structure, and two pairs of identical actuators are connected in series between the installation platform and the base. The structure of each actuator includes a power part 1, a support structure part 2 and a measurement part 3. The support structure is used to provide and maintain the initial state of the power part to facilitate its movement, and the measurement part is used to measure the motion of the power part.

[0044] The power part 1 comprises an upper voice coil motor 101 and a lower voice coil motor 102, and the upper voice coil motor 101 comprises an upper voice coil motor coil 103 and an upper voice coil motor magnet 104, and the upper voice coil m...

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Abstract

The invention relates to a multi-freedom-degree voice coil vibration isolation and inhibition structure and a control method therefor. The vibration isolation and inhibition structure consists of twoactuators, and an installation platform and a substrate are connected in series. Each actuator consists of two voice coil motors and two membrane springs. When the upper voice coil motor is started, the negative rigidity can be provided between the installation platform and a transition platform of the actuator, and is connected with the positive rigidity of the lower membrane spring in a series manner, thereby theoretically enabling the overall rigidity of the structure to be infinite, and inhibiting the direct interference caused by the installation platform. When the lower voice coil motoris started, the variable damping can be provided for enabling the vibration of the substrate to be well isolated when the vibration is transmitted to the transition platform of the actuator, and the low-frequency resonance caused by the flexibility of the lower membrane spring is weakened and even eliminated, thereby greatly weakening the impact, caused by the broadband vibration of the substrate,on the high-precision equipment on the installation platform.

Description

technical field [0001] The invention relates to a multi-degree-of-freedom voice coil vibration isolation structure and a control method thereof, belonging to the technical field of active control. Background technique [0002] With the rapid development of science and technology, high-precision instruments and equipment are more and more widely used in the aerospace field. Correspondingly, the requirements for the vibration isolation performance and anti-interference ability of the installation structure are further improved. Gradually unable to meet the demand, so active control technology came into being. [0003] Usually, high-precision equipment and its installation structure need to face two interference factors, one is the direct interference brought by the equipment itself, such as the interference caused by the weight change of the equipment, the interference caused by the gyroscope when it is carried by itself, etc.; The other is the vibration interference transmit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D19/02
CPCG05D19/02
Inventor 李伟鹏季春炜黄海张弘
Owner 北京航宇振控科技有限责任公司
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