Damping method for forced vibration of inertially stabilized platform

Abstract

The invention relates to a damping method for forced vibration of an inertially stabilized platform. Electric connection is added between a vibration absorber and the inertially stabilized platform by introducing an active feedback link consisting of an angle sensor, an amplifier and a torquer to a passive vibration absorber, therefore, the added active feedback link increases comprehensive rotary inertia of an active part and a passive part of the vibration absorber in an electric manner; when external disturbance acts on the inertially stabilized platform, and under the condition that a control system does not participate in working, the passive part of the vibration absorber and the active feedback link generate the torque for resisting disturbance action simultaneously, so as to damp angle vibration of the inertially stabilized platform caused by external disturbance. By optimization of parameters of the vibration absorber, and under the condition that the specification of the passive vibration absorber is smaller, the purposes of improving the dynamic characteristic of the inertially stabilized platform, expanding damping the bandwidth of vibration of the system and reducing the steady-state error of the system are achieved. The damping method has the characteristics of independence, flexibility, simplicity and convenience and is applicable to an inertial system and a gyro device.

Description

technical field [0001] The invention relates to a damping method for forced vibration of an inertial stable platform, which can be used for damping the forced vibration of inertial systems and gyro instruments with significant resonance characteristics. Background technique [0002] Modern cutting-edge science and technology require gyro instruments and systems not only to solve the orientation and navigation problems of the carrier, but also to stabilize a series of special equipment, that is, to isolate the special equipment from the angular motion of the moving carrier, so on the basis of making full use of the inherent characteristics of the gyroscope In combination with automatic control technology, various gyro stabilization systems are made, and the inertial stabilization platform is a typical example of the gyro stabilization system. [0003] The main purpose of the inertial stabilization platform is to isolate the angular motion of the carrier and provide a stable w...

AI Technical Summary

Problems solved by technology

[0007] Passive and semi-active vibration reduction methods mainly rely on the anti-disturbance torque provided by the inertial mass block physically connected with the vibration reduction object, that is, the passive shock absorber to achieve the damping of the forced vibration of the system. Therefore, in order to achieve a better damping effect, It will inevitably lead to the limitation of the placement space of the passive shock absorber in the system; and the limitation of the specification selection of the passive shock absorber will lead to narrow bandwidth of system vibration reduction, insignificant improvement of dynamic characteristics and large steady-state error. major defects

Images