scholarly journals Active Vibration Protection System with a Controlled Viscosity of the Working Environment

2018 ◽  
Vol 6 (3) ◽  
pp. 9-15
Keyword(s):  
Working Environment ◽  
Protection System ◽  
Vibration Protection ◽  
Active Vibration

ACTIVE VIBRATION PROTECTION BASED ON THE MECHATRONIC SYSTEM

2020 ◽  
Vol 3 ◽  
pp. 76-82
Author(s):  
R.N. POLYAKOV ◽  
A.V. GORIN ◽  
R.K. ZARETSKIY ◽  
N.V. TOKMAKOV
Keyword(s):  
Protection System ◽  
Mechatronic System ◽  
Vibration Protection ◽  
Protection Systems ◽  
Piezoelectric Elements ◽  
Active Vibration

The article examined and analyzed various types of vibration protection systems. Based on the results of the analysis, it was concluded that the known methods for providing vibration protection do not fully satisfy the requirements for them. Therefore, the possibility of using an active vibration protection system based on piezoelectric elements is considered. The design was developed and general ideas about the structure of the active vibration protection system, the principle of its operation were formulated.

Choosing Damping Parameters for the Inertial Orientation System

2021 ◽  
pp. 113-128
Author(s):  
V.P. Podchezertsev ◽  
S.V. Topilskaya
Keyword(s):  
Natural Frequency ◽  
Vibration Suppression ◽  
Outer Space ◽  
Protection System ◽  
Dynamic Vibration ◽  
Shock Absorbers ◽  
Vibration Protection ◽  
Orientation System ◽  
Vibration Impact ◽  
Vibration Dampers

The article discusses criteria for selecting the vibration protection for the spacecraft inertial orientation system. The considered vibration protection system allows providing acceptable amplitude acceleration for the gyroscopic device sensitive elements under vibration impact on the device body during the spacecraft launching and high angular stability of the position of the sensitive elements relative to the inertial coordinate system during a long period of operation (15 years) in orbit. The proposed vibration protection system consists of shock absorbers (springs) with stable high elastic characteristics under all factors of operation in the outer space and dynamic vibration dampers. The article presents a method for determining the parameters of dynamic vibration dampers taking into account the characteristics of the shock absorber, critical for the damping system of an inertial device. The proposed method for adjusting dynamic vibration dampers consists in suppressing vibrations at the natural frequency f1 of the shock absorption system and providing acceptable values of the gain coefficients of the structure resonant vibration amplitudes near the natural frequency f1. Certain characteristics of the damping system allow realizing the permissible vibration amplification coefficients at resonance, without significantly affecting the level of vibration suppression in the natural frequency zone of the vibration protection object

Choice of configuration and parameters of the vibration protection system for gyroscopic angular velocity meters

2021 ◽  
Author(s):  
Keyword(s):  
Angular Velocity ◽  
Protection System ◽  
Technical Solution ◽  
Vibration Damper ◽  
Dynamic Vibration ◽  
Shock Absorbers ◽  
Damping Characteristics ◽  
Vibration Protection ◽  
High Elasticity ◽  
Nonlinear Elastic

The rationale for the choice of a technical solution to the issue of vibration protection of gyroscopic angular velocity meters, built on the basis of dynamically tuned gyroscopes (DTG) is presented. The proposed vibration protection system consists of shock absorbers with high elasticity and dynamic vibration dampers (DVD) with nonlinear elastic and damping characteristics. The main factors that determine the peculiarities of choosing a vibration protection system for precision gyroscopic devices are indicated. Keywords dynamically tuned gyroscope (DTG); dynamic vibration damper (DVD); vibration protection system; gyroscopic angular velocity meter

An Observer-Based Active Vibration Isolation System Using the Voice-Coil Actuator

2013 ◽  
Vol 846-847 ◽  
pp. 161-166 ◽  
Author(s):  
Wei Chao Chi ◽  
Deng Qing Cao ◽  
Wen Hu Huang
Keyword(s):  
Vibration Isolation ◽  
Output Feedback Control ◽  
Vertical Direction ◽  
Voice Coil Motor ◽  
Working Environment ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Active Vibration ◽  
The Voice ◽  
Voice Coil Actuator

This paper focuses on an active vibration isolator based on voice-coil motor (VCM). The isolator may reduce the vibration in the range from 5 to 100Hz in one DOF which can provide the payloads on a satellite a more stable working environment. A VCM is designed and optimized to provide enough feedback force; the state-space model is established according to the basic governing equations of the VCM. The LQR controller based on a reduced-order observer is designed for an output feedback control system. The vibration isolation system is verified by numerical simulations and experiments in which the VCM is installed between the payload and the excitation bottom, with an accelerometer located on the payload in the vertical direction. Both the simulation and experiment results show that the vibration of the payload is reduced effectively using the voice-coil actuator designed here.

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