LQR and Fuzzy Controller Application with Bingham Modified Model in Semi Active Vibration Control of 11-DOFs Full Car Suspension System

2013 ◽  
Author(s):  
Seiyed Hamid Zareh ◽  
Ali Fellahjahromi ◽  
Reza Hayeri ◽  
Amir A. A. Khayyat ◽  
A. Zabihollah
Keyword(s):  
Vibration Control ◽  
Fuzzy Controller ◽  
Active Vibration Control ◽  
Suspension System ◽  
Modified Model ◽  
Car Suspension ◽  
Active Vibration

scholarly journals Active vibration control of a smart functionally graded piezoelectric material plate using an adaptive fuzzy controller strategy

2019 ◽  
Vol 30 (14) ◽  
pp. 2065-2078 ◽  
Author(s):  
Jonas Maruani ◽  
Isabelle Bruant ◽  
Frédéric Pablo ◽  
Laurent Gallimard
Keyword(s):  
Vibration Control ◽  
Piezoelectric Material ◽  
Fuzzy Controller ◽  
Active Vibration Control ◽  
Shear Deformation Theory ◽  
Functionally Graded ◽  
Pure Aluminium ◽  
Functionally Graded Piezoelectric Material ◽  
Active Vibration ◽  
Functionally Graded Piezoelectric

In this article, the active vibration control of a smart structure made out of a single functionally graded piezoelectric material layer, equipped with a network of discrete electrodes, is studied. The material properties vary continuously across the direction of thickness, so that top and bottom surfaces consist of pure PZT4 and the mid surface is composed of pure aluminium. The percolation phenomenon is taken into account. A functionally graded piezoelectric material plate finite element based on the first-order shear deformation theory hypothesis and layer-wise approximation for electric potential is implemented. An optimization procedure is considered to define the relevant electrodes for actuators and sensors, based on controllable and observable criteria. An adaptative fuzzy controller system is used, activating with relevance the actuators according to the most excited eigenmodes. Simulations show the effectiveness of this kind of concept.

Semi Active Vibration Control of a Passenger Car Using Magnetorheological Shock Absorber

2010 ◽  
Author(s):  
Ali Fellah Jahromi ◽  
A. Zabihollah
Keyword(s):  
Vibration Control ◽  
Control Algorithm ◽  
Shock Absorber ◽  
Active Vibration Control ◽  
Linear Quadratic Regulator ◽  
Suspension System ◽  
Linear Quadratic ◽  
Passenger Car ◽  
Road Profile ◽  
Active Vibration

A novel semi-active control system for suspension systems of passenger car using Magnetorheological (MR) damper is introduced. The suspension system is considered as a massspring model with an eight-degrees-of-freedom, a passive damper and an active damper. The semi-active vibration control is designed to reduce the amplitude of automotive vibration caused by the alteration of road profile. The control mechanism is designed based on the optimal control algorithm, Linear Quadratic Regulator (LQR). In this system, the damping coefficient of the shock absorber changes actively trough inducing magnetic field. It is observed that utilizing the present control algorithm may significantly reduce the vibration response of the passenger car, thus, providing comfortable drive. The new developed suspension system may lead to design and manufacturing of passenger car in which the passenger may not feel the changes in road profile from highly bumpy to smooth profile.

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