scholarly journals Multimodal vibration damping using a simplified current blocking shunt circuit

2020 ◽  
Vol 31 (14) ◽  
pp. 1731-1747
Author(s):  
Ghislain Raze ◽  
Ahmad Paknejad ◽  
Guoying Zhao ◽  
Christophe Collette ◽  
Gaetan Kerschen
Keyword(s):  
Vibration Amplitude ◽  
Optimization Algorithms ◽  
Vibration Damping ◽  
Tuning Method ◽  
Piezoelectric Beam ◽  
Current Blocking ◽  
Shunt Circuit

The tuning of a simplified current blocking shunt circuit able to mitigate the vibration amplitude of multiple structural resonances is addressed in this article. The proposed strategy exploits the two-port network formalism in combination with physically motivated approximations to tune sequentially the electrical elements of the different branches of the shunt circuit. The resulting tuning method does not resort to optimization algorithms and requires only the knowledge of quantities that are easy to measure experimentally. It is demonstrated both numerically and experimentally using a piezoelectric beam.

scholarly journals Multiobjective PID controller design for active suspension system: scalarization approach

2018 ◽  
Vol 8 (2) ◽  
pp. 183-194
Author(s):  
O. Tolga Altinoz
Keyword(s):  
Controller Design ◽  
Optimization Algorithms ◽  
Active Suspension ◽  
Suspension System ◽  
Peak Time ◽  
Tuning Method ◽  
Pid Tuning ◽  
Multiobjective Problem ◽  
The Time Domain ◽  
Single Objective

In this study, the PID tuning method (controller design scheme) is proposed for a linear quarter model of active suspension system installed on the vehicles. The PID tuning scheme is considered as a multiobjective problem which is solved by converting this multiobjective problem into single objective problem with the aid of scalarization approaches. In the study, three different scalarization approaches are used and compared to each other. These approaches are called linear scalarization (weighted sum), epsilon-constraint and Benson’s methods. The objectives of multiobjective optimization are selected from the time-domain properties of the transient response of the system which are overshoot, rise time, peak time and error (in total there are four objectives). The aim of each objective is to minimize the corresponding property of the time response of the system. First, these four objective is applied to the scalarization functions and then single objective problem is obtained. Finally, these single objective problems are solved with the aid of heuristic optimization algorithms. For this purpose, four optimization algorithms are selected, which are called Particle Swarm Optimization, Differential Evolution, Firefly, and Cultural Algorithms. In total,twelve implementations are evaluated with the same number of iterations. In this study, the aim is to compare the scalarization approaches and optimization algorithm on active suspension control problem. The performance of the corresponding cases (implementations) are numerically and graphically demonstrated on transient responses of the system.

An autonomous shunt circuit for vibration damping

2006 ◽  
Vol 15 (2) ◽  
pp. 359-364 ◽  
Author(s):  
Dominik Niederberger ◽  
Manfred Morari
Keyword(s):  
Vibration Damping ◽  
Shunt Circuit

Active Vibration Damping Using an Inertial, Self-Sensing, Electrodynamic Actuator

2005 ◽  
Author(s):  
Christoph Paulitsch ◽  
Paolo Gardonio ◽  
Stephen J. Elliott
Keyword(s):  
Vibration Amplitude ◽  
Vibration Damping ◽  
Induced Voltage ◽  
Current Feedback ◽  
Control Scheme ◽  
Active Vibration Damping ◽  
Active Vibration ◽  
Voltage Feedback ◽  
And Control ◽  
Inertial Actuator

Self-sensing active vibration damping is advantageous if sensors cannot be placed collocated to actuators or these sensors add too much weight or cost. When self-sensing, electrodynamic actuators are used, damping is directly added to the structure where they are attached without the need of electronic integrators or differentiators that could destabilize the system. Inertial actuators have also the advantage that they do not need to react relative to a fixed ground. In this paper self-sensing control with a shunted resistor, current feedback, induced voltage feedback with and without inductance compensation are investigated in simulations and experiments. Experiments with a lightweight, inertial actuator on a clamped plate show that vibration amplitude is decreased between 6dB and 13dB and control bandwidth is doubled when the appropriate control scheme is used.

scholarly journals Single loop PID controller design based on optimization algorithms for parallelly connected dc-dc converters

2021 ◽  
Vol 2128 (1) ◽  
pp. 012027
Author(s):  
Allam M. Allam ◽  
A.S. Ibrahim ◽  
Essam Nabil
Keyword(s):  
Pid Controller ◽  
Controller Design ◽  
Objective Function Value ◽  
Optimization Algorithms ◽  
Systems Dynamics ◽  
Single Loop ◽  
Tuning Method ◽  
Current Sharing ◽  
Pid Controller Design ◽  
Steady State Performance

Abstract This paper addresses a viable single loop PID controller on the bases of optimization algorithms for parallelly connected DC-DC converters to improve current sharing, improve the systems dynamics and guarantee good steady-state performance simultaneously. Because of inconvenience and lack of accuracy of Ziegler-Nichols rule in tuning PID controller parameters, an optimized controller design strategy with the purpose of enhancing the system performance is introduced in this paper. The PID is tuned by the traditional Ziegler -Nichols technique along with three other different algorithms: Genetic algorithm, whale algorithm and grey wolf algorithm. A comparison has been established between these algorithms based on the objective function value, execution time, overshoot, settling time and current sharing. The simulation results were collected to authenticate effectiveness of the proposed techniques and to evaluate the advantages of these optimization algorithms over the traditional tuning method.

A General Auto-Tuning Method for Active Vibration Damping of Mobile Hydraulic Machines

2014 ◽  
Author(s):  
Guido Francesco Ritelli ◽  
Andrea Vacca
Keyword(s):  
Control Strategy ◽  
A Priori ◽  
Optimization Procedure ◽  
Vibration Damping ◽  
Tuning Method ◽  
Working Cycle ◽  
Hydraulic Machines ◽  
Active Vibration Damping ◽  
Pressure Feedback ◽  
Active Vibration

This paper presents an innovative approach towards the active vibration damping of mobile hydraulic machines. The authors’ research group recently introduced a novel control strategy based on pressure feedback and on an optimization procedure. The success of the optimization lies on the efficient quantification of the vibration extend which is the objective to be minimized. This paper addresses the definition of the objective function introducing a new method which does not require a priori knowledge of the working cycle. This approach enables the control strategy to be potentially applied to any kind of working scenario and does not require the intervention of a control designer. The results presented in this paper show that the novel method is able to effectively attenuate the undesired oscillations while not affecting the actuator velocity.

Active Vibration Damping Using an Inertial, Electrodynamic Actuator (DETC2005-84632)

2006 ◽  
Vol 129 (1) ◽  
pp. 39-47 ◽  
Author(s):  
Christoph Paulitsch ◽  
Paolo Gardonio ◽  
Stephen J. Elliott
Keyword(s):  
Vibration Amplitude ◽  
Vibration Damping ◽  
Induced Voltage ◽  
Current Feedback ◽  
Fixed Base ◽  
Active Vibration Damping ◽  
Active Vibration ◽  
Voltage Feedback ◽  
And Control ◽  
Inertial Actuator

Active vibration damping using a shunted inertial actuator is advantageous if external sensors cannot be collocated with the actuators, or these sensors would add too much weight or cost. When electrodynamic actuators are used, damping can be directly added to the structure where they are attached without the need of electronic integrators or differentiators. Inertial actuators have also the advantage that they do not need to react relative to a fixed base. In this paper, control with a shunted resistor, current feedback, and induced voltage feedback, with and without inductance compensation, are all investigated in simulations and experiments. Experiments with a lightweight, inertial actuator on a clamped plate show that vibration amplitude is decreased between 6 and 13dB and control bandwidth is doubled when the internal actuator inductance is compensated.

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