Dissertation > Excellent graduate degree dissertation topics show

Hybrid Control of Flexible Structure Vibration

Author: ZuoJiangJiang
Tutor: YangTieJun
School: Harbin Engineering University
Course: Marine Engineering
Keywords: modified inertial actuator double feed-back control feed-back and feed-forwardcontrol hybrid control active vibration isolation
CLC: TB535
Type: Master's thesis
Year: 2013
Downloads: 11
Quote: 0
Read: Download Dissertation

Abstract


Vibrating machinery must be isolated from a supporting flexible structure which is likelyto cause noise radiation by the vibration excitation. Active vibration isolation can be appliedin these situations to extend the low frequency performance of passive vibration isolators.This paper describes a theoretical and experimental investigation into an activefour-mount vibration isolation system in which an electromagnetic inertial actuator isinstalled under the base plate which is connected to an equipment plate through a passivemount. Each actuator of this study operates independently by a hybrid control strategy whichis consist of two control loop. The inner force, integrated force or compensator feed-backcontrol loop is to modify the actuator’s transfer function. The outer loop, to minimize the baseplate velocity, can be either the decentralized down-isolator velocity feed-back control orfeed-forward control based on filter x-LMS algorithm.As to the double feedback control strategy, the inner feed-back control is able to stabilizethe outer velocity feed-back control system that will be unstable at a high velocity gain due tothe inertial actuator’s additional phase effects. In this case, the stabilities and controlperformances of the outer feed-back loop with three kinds of modified actuator are compared.It is found that a compensator within the internal control loop and an external velocityfeed-back control loop offer a very promising solution both in terms of stability andperformance of the system. Another hybrid control strategy that a modified actuator withinthe feed-forward control is analyzed. A general theoretical solution of optimum control forcewhich the modified actuator demands using the impedance method is presented, and isverified in simulations using the Simulink software. More explicit investigations on theconverging speed and remnant of the mean square error are discussed.

Related Dissertations

  1. Fuzzy Modeling and Hybrid Control of Rotary Kiln Calcination Temperature,TP273.4
  2. The Design of Process Control System of Acetylene Production Plant Based on Fuzzy Control,TP273
  3. Dynamic Modeling and Self-converging Control of Electromagnetic Suspension Vibration Isolator,TB535.1
  4. Theoretically Study on Hybrid Control for High-Tech Platform,TB535.1
  5. Design and Application Study of a Novel Piezoceramic-Rubber Integrated Vibration Isolator,TB535.1
  6. Hybrid Micro-Vibration Control of Structure and Inside Device Platform under Environment Excitation,TB535.1
  7. Research on Characteristics and Control Strategy of TCSC,TM761
  8. Computation Study on Micro-Vibration Hybrid Control for High-Tech Buildings,TB535.1
  9. Research on the Several Key Technology of Distribution Static Synchronous Compensator,TM761.12
  10. A Hybrid Control Algorithm for Voltage Regulation in Bi-Directional DC-DC Converter,TM46
  11. Multi-dof Micro-vibration Isolation Platform for Study of Hybrid Control,TB535.1
  12. The Optimal Controller Design for Active Vibration Isolation System,TB535.1
  13. Boom tower crane condition monitoring system with real-time protection,TH213.3
  14. Study of Hybrid Theory in Power Electronic Systems,N941
  15. Study on Actuators of Active Payload-level Vibration Isolation System for Experiments in Space,V414
  16. Theoretical and Experimental Study on Adaptive Vibration Isolation,TB535.1
  17. Research of Liquid Level Monitoring System Based on PC-Based,TP277
  18. Modeling and Control of Electromagnetic Suspension Vibration Isolator,TB535.1
  19. Voice coil motor based Active Isolation System,TB535.1
  20. The Study on Control Strategy of Drivetrain System of Hybrid Electric Vehicle,U469.7
  21. Research on Control and Dynamic Simulation of Error Compensation,TH164

CLC: > Industrial Technology > General industrial technology > Acoustic engineering > Vibration, noise and its control > Vibration and noise control and its use
© 2012 www.DissertationTopic.Net  Mobile