scholarly journals Adaptive Feedforward Compensating Self-Sensing Method for Active Flutter Suppression

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3447 ◽  
Author(s):  
Yizhe Wang ◽  
Zhiwei Xu
Keyword(s):  
Vibration Control ◽  
Bridge Circuit ◽  
Active Vibration Control ◽  
Local Strain ◽  
The Self ◽  
Negative Effects ◽  
Active Vibration ◽  
And Performance ◽  
The Time Domain ◽  
Application Fields

A single piezoelectric patch can be used as both a sensor and an actuator by means of the self-sensing piezoelectric actuator, and the function of self-sensing shows several advantages in many application fields. However, some problems exist in practical application. First, a capacitance bridge circuit is set up to realize the function of self-sensing, but the precise matching of the capacitance of the bridge circuit is hard to obtain due to the standardization of electric components and variations of environmental conditions. Second, a local strain is induced by the self-sensing actuator that is not related to the global vibration of the structure, which would affect the performance of applications, especially in active vibration control. The above problems can be tackled by the feedforward compensation method that is proposed in this paper. A configured piezoelectric self-sensing circuit is improved by a feedforward compensation tunnel, and a gain of compensation voltage is adjusted by the time domain and frequency domain’s steepest descent algorithms to alleviate the capacitance mismatching and local strain problems. The effectiveness of the method is verified in the experiment of the active vibration control in a wind tunnel, and the control performance of compensated self-sensing actuation is compared to the performance with capacitance mismatching and local strain. It is found that the above problems have negative effects on the stability and performance of the vibration control and can be significantly eliminated by the proposed method.

Self-Powered Active Vibration Control With Continuous Control Input: Application to a Cab Suspension of a Heavy Duty Truck

1999 ◽  
Author(s):  
Kimihiko Nakano ◽  
Yoshihiro Suda ◽  
Shigeyuki Nakadai
Keyword(s):  
Control System ◽  
Vibration Control ◽  
Active Vibration Control ◽  
The Self ◽  
Vibration Energy ◽  
Heavy Duty ◽  
Heavy Duty Truck ◽  
Active Vibration ◽  
Self Powered ◽  
Isolation Performance

Abstract Active vibration control using regenerated vibration energy, i.e., self-powered active control, is proposed. In the self-powered active control system, vibration energy is regenerated by an electric generator, which is called an energy regenerative damper, and is stored in the condenser. An actuator achieves active vibration control using the energy stored in the condenser. The variable-value resistance whose value can be controlled by a computer is utilized to control output force of the actuator. The authors examine the performance of the self-powered active vibration control on experiments and propose to apply this system to cab suspensions of a heavy duty truck. Through experiments, it is shown that the self-powered active vibration control system has better isolation performance than a semi-active and a passive control system. Numerical simulations demonstrate better isolation performance of the self-powered active vibration control in cab suspensions of a heavy duty truck.

scholarly journals Foundation forces caused by dynamic air gap torques of converter driven induction motors influenced by active vibration control: a theoretical analysis

2021 ◽  
Author(s):  
Ulrich Werner
Keyword(s):  
Theoretical Analysis ◽  
Vibration Control ◽  
Induction Motors ◽  
Block Diagram ◽  
Active Vibration Control ◽  
Steel Frame ◽  
Air Gap ◽  
Control Concept ◽  
Active Vibration ◽  
The Time Domain

AbstractIn the paper, a theoretical analysis regarding foundation forces caused by dynamic air gap torques of converter-driven induction motors, influenced by active vibration control, is shown. Based on a plane model, where actuators are placed between the motor feet and steel frame foundation and where the vertical motor feet accelerations are controlled, a mathematical description in the time domain, Laplace domain, and Fourier domain is presented, as well as a block diagram for numerical simulation. A numerical example is shown, where a 2-pole induction motor (2 MW) is analyzed for different cases—motor directly mounted on a steel frame foundation (case 1), actuators between motor feet and foundation, operating passively (case 2) and actively (case 3). It could be shown, that with the presented active vibration control concept the foundation forces due to dynamic air gap torques can be clearly reduced.

scholarly journals Simulation and Experimental Study on Vibration and Sound Radiation Control with Piezoelectric Actuators

2011 ◽  
Vol 18 (1-2) ◽  
pp. 343-354 ◽  
Author(s):  
Zhiyi Zhang ◽  
Yong Chen ◽  
Hongguang Li ◽  
Hongxing Hua
Keyword(s):  
Vibration Control ◽  
Sound Pressure ◽  
Active Vibration Control ◽  
Coupled Model ◽  
Piezoelectric Actuators ◽  
Adaptive Method ◽  
Vibration Responses ◽  
Active Vibration ◽  
Vibration And Sound Radiation ◽  
The Time Domain

FEM/BEM is adopted to model the interaction between the fluid and structures. In the modeling, modal truncation and inertial coupling are applied to sufficiently reduce the coupled model order. This approach is adopted for the purpose of constructing a modal model in the time domain. Active vibration control is realized with piezoelectric actuators and an adaptive method. In the control, the summation of vibration responses is used as the control error since the integral of acceleration on the plate surface is approximately proportional to the far field sound pressure. A rigidly baffled plate connected with a mass through one piezoelectric actuator is simulated at first. In the experiment, the plate is excited by a rotating eccentric mass and controlled with four piezoelectric actuators. The results have shown that active vibration control with the piezoelectric actuators can lead to a noticeable attenuation in sound pressure.

scholarly journals Active Vibration Control of an Axially Translating Robot Arm with Rotating-Prismatic Joint Using Self-Sensing Actuator

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Liang Zhao ◽  
Zhen-Dong Hu
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
The Self ◽  
Robot Arm ◽  
Assumed Mode Method ◽  
Prismatic Joint ◽  
Lagrange’S Equation ◽  
Control Gain ◽  
Mode Method ◽  
Active Vibration

Active vibration control of an axially translating robot arm with rotating-prismatic joint using self-sensing actuator is investigated. The equations of the system are derived by Lagrange’s equation with the assumed mode method. The displacement and velocity control law is used to configure the self-sensing actuator, which provides the active damping and stiffness effect to the structure. The numerical simulations reveal that the tip deflection of the arm can be effectively reduced by the self-sensing actuator. The amplitude of sensor voltage is inversely proportional to the length of axially translating arm. And higher feedback control gain results in lower sensor voltages and vibration amplitudes.

Harmonic active vibration control using piezoelectric self-sensing actuation with complete digital compensation

2017 ◽  
Vol 29 (7) ◽  
pp. 1510-1519 ◽  
Author(s):  
Anik Pelletier ◽  
Philippe Micheau ◽  
Alain Berry
Keyword(s):  
Lead Zirconate Titanate ◽  
Piezoelectric Actuator ◽  
Active Vibration Control ◽  
Local Strain ◽  
Digital Processing ◽  
Lead Zirconate ◽  
The Self ◽  
Digital Compensation ◽  
Control Scheme ◽  
Active Vibration

In this article, the implementation of a self-sensing piezoelectric actuator with complete digital compensation is presented. The proposed compensation not only minimizes the signal due to the electrical behavior of the self-sensing actuator but also takes into account the fact that piezoelectric actuator causes a local strain—not related to the global vibration of the plate—in a vibrating plate to which it is coupled. Therefore, the corrected measured current is related to the global vibration of the plate and may be used in an active control scheme. The electro-mechanical model on which is based this self-sensing actuator is first explained. Then, the electronic and digital processing implementation is presented, as well as the active time-harmonic control scheme used. Finally, results of experimental validation are presented, and the attenuation performance of the self-sensing actuator is compared to the performances of a co-localized accelerometer/lead zirconate titanate pair. It is shown that the corrected self-sensing actuator current gives results better than what is obtained with a co-localized sensor/actuator pair and that this technique may be used to control more than one frequency simultaneously.

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