Stewart active and passive integrated vibration isolation platform adopting electromagnetic drive

Abstract

The invention provides a Stewart active and passive integrated vibration isolation platform adopting electromagnetic drive. The vibration isolation platform comprises a foundation platform, three lower connecting blocks, six supporting legs, three upper connecting blocks and a load platform, wherein the foundation platform, the three lower connecting blocks, the six supporting legs, the three upper connecting blocks and the load platform are connected in sequence. The vibration isolation platform is characterized in that the supporting legs comprise force sensors and voice coil actuators; one ends of the force sensors are connected with the lower connecting blocks, the other ends of the force sensors are connected with the voice coil actuators, and the force sensors are used for detecting acting force on the supporting legs; one ends of the voice coil actuators are connected with the upper connecting blocks, the other ends of the of the voice coil actuators are connected with the force sensors, and the voice coil actuators are used for generating different displacement elongations according to external vibration source disturbance, so that system vibration is actively controlled. The vibration isolation platform is mainly used for passively isolating high frequency and actively isolating low and medium frequency; the posture of an upper platform is controlled through displacement generated by the voice coil actuators, so that micro vibration is actively controlled and isolated; the vibration isolation platform has the advantage that ultra-low frequency control can be achieved by adopting electromagnetic drive.

Description

technical field [0001] The invention belongs to the field of micro-vibration active control and vibration reduction, in particular to an electromagnetically driven Stewart active and passive integrated vibration isolation platform. Background technique [0002] The current aerospace technology has had an important impact on society, economy, military and politics. With the increasing demand for social development, national security and economic construction, at the same time, the role of satellites is irreplaceable. Observation resolution requirements have also been continuously upgraded. Satellite attitude oscillations, and micro-vibration interference from satellite gyrations or reciprocating components on satellite platforms are gradually becoming bottlenecks restricting the use of highly sensitive payloads. [0003] Microvibration is caused by the normal operation of the equipped equipment during the orbital operation of the spacecraft. Such as the rotation of the momen...

AI Technical Summary

Problems solved by technology

[0006] The disadvantages of the existing technology are: this kind of application is relatively rare in domestic literature and patents, and the existing structure has the following disadvantages, the flexibility is not high, and the structure is relatively complicated

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