New Vibration Control Methodology in Engine Mount System for Low-Fuel Consumption Engines

2013 ◽  
Vol 6 (1) ◽  
pp. 569-576
Author(s):  
Yusuke Sato ◽  
Masahiko Kondo
Keyword(s):  
Vibration Control ◽  
Fuel Consumption ◽  
Engine Mount ◽  
Control Methodology

Vibration Suppression in a Tension-Aligned Structure Through Sequential Application and Removal of Constraints

2012 ◽  
Author(s):  
Tingli Cai ◽  
Ranjan Mukherjee ◽  
Alejandro R. Diaz
Keyword(s):  
Vibration Control ◽  
High Frequency ◽  
Vibration Suppression ◽  
Primary Role ◽  
Accurate Knowledge ◽  
Array Structure ◽  
System States ◽  
Aligned Array ◽  
Control Methodology

We present an efficient method for vibration suppression in a tension-aligned array structure using constraint actuators. The primary role of constraint actuators is to cyclically apply and remove constraints such that vibration energy is efficiently funneled into high-frequency modes of the structure, where it can be dissipated quickly and naturally due to high rates of damping. A cycle of constraint application and removal can never add energy and hence the method can potentially achieve vibration control without accurate knowledge of the system states. The vibration control methodology is applied to a tension-aligned array structure supported by a structure in compression. Our approach for vibration suppression has the potential to positively influence the development of tension-aligned architectures which are contemplated for large precision apertures in space.

Vibration Control of an Engine Mount for UAV Activated by Piezostack Actuator

2011 ◽  
Vol 52-54 ◽  
pp. 358-364
Author(s):  
Jong Seok Oh ◽  
Seung Bok Choi
Keyword(s):  
Vibration Control ◽  
Sliding Mode ◽  
Active Vibration Control ◽  
Effective Control ◽  
Control Performance ◽  
Vibration Level ◽  
Frequency Domains ◽  
Active Vibration ◽  
Engine Mount ◽  
Active Engine

In this paper, vibration control performance of piezostack active engine mount system for unmanned aero vehicle (UAV) is evaluated via computer simulation. As a first step, the dynamic model of engine mount system which is supported at three points is derived. In the configuration of engine mount system, the inertia type of piezostack based active mount is installed for active vibration control. Then, the vibration level of UAV engine is measured. To attenuate the vibration which is transmitted from engine, a sliding mode controller which is robust to uncertain parameters is designed. Vibration control performances of active engine mount system are evaluated at each mount and center of gravity. Effective Control results are presented in both time and frequency domains.

scholarly journals A general vibration control methodology for human‐induced vibrations

2019 ◽  
Vol 26 (10) ◽  
Author(s):  
Xidong Wang ◽  
Emiliano Pereira ◽  
Jaime H. García‐Palacios ◽  
Iván M. Díaz
Keyword(s):  
Vibration Control ◽  
Control Methodology

Robust Kalman-Filter-Based Frequency-Shaping Optimal Active Vibration Control of Uncertain Flexible Mechanical Systems with Nonlinear Actuators

2003 ◽  
Vol 9 (6) ◽  
pp. 623-644 ◽  
Author(s):  
Shinn-Horng Chen
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Time Varying ◽  
Time Varying Parameter ◽  
Robust Kalman Filter ◽  
Parameter Perturbations ◽  
Actuator Nonlinearities ◽  
Active Vibration ◽  
Control Methodology ◽  
Flexible Mechanical System

In this paper, we present a time-domain control methodology, called the robust Kalman-filter-based frequency-shaping optimal feedback (KFBFSOF) control method. Using this method, we treat the active vibration control (or active vibration suppression) problem of flexible mechanical systems under simultaneously high-frequency unmodeled dynamics, residual modes, linear time-varying parameter perturbations in both the controlled and residual parts, noises (input noise and measurement noise), noise uncertainties and actuator nonlinearities. Two robust stability conditions are proposed for the flexible mechanical system, which is controlled by a KFBFSOF controller and subject to mode truncation, noise uncertainties, actuator nonlinearities and linear structured time-varying parameter perturbations simultaneously. The advantage of the presented KFBFSOF control methodology is that it can make the controlled closed-loop system have both good robustness at high frequencies and good performance at low frequencies. Besides, the proposed robust stability criteria guarantee that the designed KFBFSOF controller can make the controlled flexible mechanical system avoid the possibilities of instability induced by both spillover and time-varying parameter perturbations. Two examples are given to illustrate the application of the presented control methodology to the active vibration control problems of a simply-supported flexible beam and of a flexible rotor system.

Sign in / Sign up

Export Citation Format

Share Document