scholarly journals Filtered-error recursive least squares optimization for disturbance feedforward control in active vibration isolation

2019 ◽  
Vol 52 (15) ◽  
pp. 448-453
Author(s):  
M.A. Beijen ◽  
W.B.J. Hakvoort
Keyword(s):  
Least Squares ◽  
Vibration Isolation ◽  
Feedforward Control ◽  
Recursive Least Squares ◽  
Active Vibration ◽  
Least Squares Optimization ◽  
Filtered Error ◽  
Active Vibration Isolation

A Study of Active Vibration Isolation

1985 ◽  
Vol 107 (4) ◽  
pp. 392-397 ◽  
Author(s):  
N. Tanaka ◽  
Y. Kikushima
Keyword(s):  
Vibration Isolation ◽  
Control Method ◽  
Feedforward Control ◽  
Ground Vibration ◽  
Design Parameters ◽  
Isolation Method ◽  
Isolation System ◽  
Active Isolation ◽  
Active Vibration ◽  
Active Vibration Isolation

For the purpose of suppressing ground vibration produced by vibrating machines, such as forging hammers, press machines, etc., this paper presents an active vibration isolation method. Unlike conventional isolators, the active isolator proposed in this paper permits rigid support of the machines. First, the principle of the active isolation method is shown, and the system equations are derived. Secondly, the characteristics and the design parameters of the active isolation system are presented. Thirdly, from the point of view of the feedforward control method, the dynamic compensators are designed so as to sufficiently suppress the exciting force. Finally, an experiment is carried out to demonstrate that the active isolator is applicable for suppressing the ground vibration.

scholarly journals Disturbance feedforward control for active vibration isolation systems with internal isolator dynamics

2018 ◽  
Vol 436 ◽  
pp. 220-235 ◽  
Author(s):  
Michiel A. Beijen ◽  
Marcel F. Heertjes ◽  
Hans Butler ◽  
Maarten Steinbuch
Keyword(s):  
Vibration Isolation ◽  
Feedforward Control ◽  
Active Vibration ◽  
Isolation Systems ◽  
Active Vibration Isolation

scholarly journals Self-tuning Feedforward Control for Active Vibration Isolation of Precision Machines

2014 ◽  
Vol 47 (3) ◽  
pp. 5611-5616 ◽  
Author(s):  
M.A. Beijen ◽  
J. van Dijk ◽  
W.B.J. Hakvoort ◽  
M.F. Heertjes
Keyword(s):  
Vibration Isolation ◽  
Feedforward Control ◽  
Self Tuning ◽  
Active Vibration ◽  
Precision Machines ◽  
Active Vibration Isolation

Research on Adaptive Feedforward Control Algorithm of Electromagnetic Active Vibration Isolation System

2012 ◽  
Vol 150 ◽  
pp. 80-84
Author(s):  
Jin Guang Zhang ◽  
Nan Xiang ◽  
Zuo Chao Xiao ◽  
Guo Ping Ding
Keyword(s):  
Vibration Isolation ◽  
Feedforward Control ◽  
Lms Algorithm ◽  
Vibration Source ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Active Vibration ◽  
Simulation Results ◽  
Adaptive Feedforward ◽  
Active Vibration Isolation

Feedforward control method to control vibration in the active vibration isolation system was discussed. By introducing the FIR filter as the feedforward link, using the mean-square deviation of system error as the performance index and utilizing the LMS algorithm to obtain the optimal parameters of controller, the design of adaptive feedforward controller was fulfilled. The simulation results showed that: for the active vibration isolation system with regularly vibration source, adopting adaptive filter method of feedforward control has notable effect. The contrast experiment with using the PID controller further verified the simulation results.

scholarly journals Active Vibration Isolation of a Diesel Generator in a Small Marine Vessel: An Experimental Study

2020 ◽  
Vol 10 (9) ◽  
pp. 3025
Author(s):  
Tiejun Yang ◽  
Lei Wu ◽  
Xinhui Li ◽  
Minggang Zhu ◽  
Michael J. Brennan ◽  
...  
Keyword(s):  
Vibration Isolation ◽  
Feedforward Control ◽  
Reference Signal ◽  
Electrical Circuit ◽  
Diesel Generator ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Active Vibration ◽  
Adaptive Feedforward ◽  
Active Vibration Isolation

An active vibration isolation system is retrofitted to a diesel generator set in a tugboat to determine the effectiveness of such a system in a realistic practical environment. The system consists of six bespoke inertial actuators chosen to make minimal modifications to the machinery arrangement, and a DSP-based controller. Six accelerometers are collocated with the actuators on the top of six isolators to act as error sensors, and six accelerometers are placed below the isolators to give a measure of the global vibration of the ships structure below the generator set. A hydrophone is also placed in the water to give an indication of the underwater noise due to the generator. The control strategy employed is six-input and six-output decentralized adaptive feedforward control with the reference signal being derived from the signal from an optical tachometer on shaft between the engine and the generator. To suppress the vibration at all the dominant forcing frequencies, an electrical circuit generated the half engine orders required from the measured reference signal. The experimental results show that the combination of the active control system and the passive isolators is effective in reducing the global vibration and the acoustic pressure at the hydrophone position.

Sign in / Sign up

Export Citation Format

Share Document