Active Vibration Control of Plates Integrated with Distributed Piezoelectric Patches using Optimal Control Approach

ABSTRACTActive vibration control of a flexible beam subjected to arbitrary, unmeasurable disturbance forces is investigated in this paper. The concept of independent modal space control is adopted. Both the feedforward and feedback control is implemented here to reduce the beam vibration. Because of the existence of the disturbance forces, the feedforward control is applied by employing the idea of force cancellation. A modal space disturbance force observer is then established in this paper to observe the disturbance modal forces for the feedforward control. For obtaining the feedforward and feedback control gains with the optimal sense, the nearly optimal control law is derived, where the modal disturbance forces are regarded as additional states. The vibration control performances and the asymptotic properties of the control law are discussed.

Download Full-text

A New Vibration Controller Design Using Consensus Technique

Volume 3: Multiagent Network Systems; Natural Gas and Heat Exchangers; Path Planning and Motion Control; Powertrain Systems; Rehab Robotics; Robot Manipulators; Rollover Prevention (AVS); Sensors and Actuators; Time Delay Systems; Tracking Control Systems; Uncertain Systems and Robustness; Unmanned, Ground and Surface Robotics; Vehicle Dynamics Control; Vibration and Control of Smart Structures/Mech Systems; Vibration Issues in Mechanical Systems ◽

10.1115/dscc2015-9795 ◽

2015 ◽

Author(s):

Ehsan Omidi ◽

S. Nima Mahmoodi

Keyword(s):

Vibration Control ◽

Controller Design ◽

Active Vibration Control ◽

Flexible Structures ◽

Network Systems ◽

Control Approach ◽

Active Vibration ◽

The Stability ◽

Virtual Leader ◽

Aluminum Beam

This paper discusses the concept of a new methodology for active vibration control of flexible structures using consensus control of network systems. In the new approach, collocated actuation/sensingpatches communicate with one another through a network with certain directed topology. A virtual leader is assigned to enforce the vibration amplitude at the place of each agent to zero. Since the modal states of the system are not available for the vibration control task, individual optimal observers are designed for each agent first. After describing the controller and examining the stability of the system, controller performance is verified using a clamped-clamped thin aluminum beam. According to the obtained numerical results, the new control approach successfully suppresses the vibration amplitudes, while the consensus design ensures that all agents are synchronized during the performance.

Download Full-text

Real-time Semi-active Vibration Control in Cable-stayed Bridges by Shear-type MR damper and Clipped-optimal Control Algorithm

Journal of the Earthquake Engineering Society of Korea ◽

10.5000/eesk.2016.20.2.113 ◽

2016 ◽

Vol 20 (2) ◽

pp. 113-123 ◽

Cited By ~ 2

Author(s):

Gwanghee Heo ◽

◽

Joonryong Jeon ◽

Seunggon Jeon

Keyword(s):

Optimal Control ◽

Vibration Control ◽

Real Time ◽

Control Algorithm ◽

Active Vibration Control ◽

Mr Damper ◽

Shear Type ◽

Active Vibration ◽

Cable Stayed Bridges

Download Full-text

Active Vibration Control of the Sting Used in Wind Tunnel: Comparison of Three Control Algorithms

Shock and Vibration ◽

10.1155/2018/1905049 ◽

2018 ◽

Vol 2018 ◽

pp. 1-10 ◽

Cited By ~ 8

Author(s):

Xing Shen ◽

Yuke Dai ◽

Mingxuan Chen ◽

Lei Zhang ◽

Li Yu

Keyword(s):

Optimal Control ◽

Wind Tunnel ◽

Vibration Control ◽

Control Algorithm ◽

Active Vibration Control ◽

Linear Quadratic Regulator ◽

Real Time Control ◽

Linear Quadratic ◽

Control Effort ◽

Active Vibration

In wind tunnel tests, cantilever stings are often used as model-mount in order to reduce flow interference on experimental data. In this case, however, large-amplitude vibration and low-frequency vibration are easily produced on the system, which indicates the potential hazards of gaining inaccurate data and even damaging the structure. This paper details three algorithms, respectively, Classical PD Algorithm, Artificial Neural Network PID (NNPID), and Linear Quadratic Regulator (LQR) Optimal Control Algorithm, which can realize active vibration control of sting used in wind tunnel. The hardware platform of the first-order vibration damping system based on piezoelectric structure is set up and the real-time control software is designed to verify the feasibility and practicability of the algorithms. While the PD algorithm is the most common method in engineering, the results show that all the algorithms can achieve the purpose of over 80% reduction, and the last two algorithms perform even better. Besides, self-tuning is realized in NNPID, and with the help of the Observer/Kalman Filter Identification (OKID), LQR optimal control algorithm can make the control effort as small as possible. The paper proves the superiority of NNPID and LQR algorithms and can be an available reference for vibration control of wind tunnel system.

Download Full-text

A magnetostrictive active vibration control approach for rotating functionally graded carbon nanotube-reinforced sandwich composite beam

Smart Materials and Structures ◽

10.1088/1361-665x/ab1e1f ◽

2019 ◽

Vol 28 (7) ◽

pp. 075007 ◽

Cited By ~ 3

Author(s):

M Talebitooti ◽

M Fadaee

Keyword(s):

Carbon Nanotube ◽

Vibration Control ◽

Composite Beam ◽

Active Vibration Control ◽

Functionally Graded ◽

Sandwich Composite ◽

Control Approach ◽

Active Vibration

Download Full-text

Active Vibration Control for a Machine Tool With Parallel Kinematics and Adaptronic Actuator

Journal of Computational and Nonlinear Dynamics ◽

10.1115/1.3124089 ◽

2009 ◽

Vol 4 (3) ◽

Cited By ~ 8

Author(s):

Alexandra Ast ◽

Peter Eberhard

Keyword(s):

Machine Tool ◽

Vibration Control ◽

Position Control ◽

Active Vibration Control ◽

Linear Quadratic Regulator ◽

Parallel Kinematics ◽

Linear Quadratic ◽

Control Approach ◽

Authority Control ◽

Active Vibration

The use of adaptronic components opens up interesting new possibilities for modern machine tools such as parallel kinematics. In this paper, two active vibration control concepts are designed for an adaptronic component of a parallel kinematic machine tool. The machine tool is modeled as a flexible multibody system model including a nonlinear flatness-based position control. Both the combination of a frequency shaped linear quadratic regulator with an active damping concept in a high authority control/low authority control approach and the H2 optimal control with gain scheduling show a high potential in the simulation to significantly increase the disturbance rejection or the tracking performance of the machine tool.

Download Full-text