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Jibril Mustefa - One of the best experts on this subject based on the ideXlab platform.
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New Tuning Approach of Fuzzy Logic System Using Proportional Integral Observer for Tracking a Nonlinear System
2021Co-Authors: Jibril MustefaAbstract:Proportional integral observer (PIO) for tracking a nonlinear method has a lower sentiency to cipher the state and output variables. So a more nonlinear controller has to be else to control to activity. In this paper, a fuzzy logic (FLC) controller has been added to the PIO to meliorate the calculation transmute. A fuzzy proportional integral observer (FPIO) for following a nonlinear system has been premeditated to decimate the susceptibleness to cipher the tell and turnout variables with the existent posit and product variables. The FPIO controller has been tested for improving the estimation control using a nonlinear quarter vehicle active Suspension system with a nonlinear hydraulic actuator. A comparison simulation of the proposed nonlinear system for estimating the state variables and tracking the output (Suspension Deflection) with a set point bump road disturbance using FPIO and PIO. The comparison simulation result shows that the estimated state variables and system output match the actual ones perfectly using a fuzzy PIO controller
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Comparison of active and semi-active Suspension systems using robust controller
2020Co-Authors: Jibril MustefaAbstract:Suspension system is used to fulfil the criteria of ride comfort and road handling. In this paper, a quarter car active & semi-active Suspension systems are designed using Matlab/Script software. Comparison of active & semi-active Suspension systems are done using robust control theory for the control targets Suspension Deflection, body acceleration and body travel. H infinity controller is selected to compare the two Suspensions using time domain analysis. Finally the simulation result prove the effectiveness of the active Suspension system by decreasing the body acceleration & sustaining the Suspension Deflection and body travel outputs
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Quarter car active Suspension system design using optimal and robust control method
2020Co-Authors: Jibril MustefaAbstract:This paper offers with the theoretical and computational evaluation of optimal& robust controlproblems, with the goal of providing answers to them with MATLAB simulation.For the robust control, -synthesis controller and for the optimal control, LQR controller are designed for a quarter car active Suspension system to maximize the ride comfort and road handling criteria’s of the vehicle. The proposed controllers are designed using Matlab script program using time domain analysis for the four road disturbances (bump, random sine pavement and white noise) for the control targets Suspension Deflection, body acceleration and body travel. Finally the simulation result proves the effectiveness of the active Suspension system with -synthesis controller
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Comparison of Active and Semi-active Suspension Systems Using Robust Controller
'International Institute for Science Technology and Education', 2020Co-Authors: Jibril MustefaAbstract:Suspension system is used to fulfil the criteria of ride comfort and road handling. In this paper, a quarter car active & semi-active Suspension systems are designed using Matlab/Script software. Comparison of active & semi-active Suspension systems are done using robust control theory for the control targets Suspension Deflection, body acceleration and body travel. H infinity controller is selected to compare the two Suspensions using time domain analysis. Finally the simulation result prove the effectiveness of the active Suspension system by decreasing the body acceleration & sustaining the Suspension Deflection and body travel outputs. Index Terms--- Active Suspension system, semi-active Suspension system, H infinity controller DOI: 10.7176/ISDE/11-3-03 Publication date: April 30th 202
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Quarter Car Active Suspension System Design Using Optimal and Robust Control Method
Industrial Engineering Letters, 2020Co-Authors: Jibril Mustefa, Alluvada PrashanthAbstract:This paper offers with the theoretical and computational evaluation of optimal & robust control problems, with the goal of providing answers to them with MATLAB simulation. For the robust control, -synthesis controller and for the optimal control, LQR controller are designed for a quarter car active Suspension system to maximize the ride comfort and road handling criteria’s of the vehicle. The proposed controllers are designed using Matlab script program using time domain analysis for the four road disturbances (bump, random sine pavement and white noise) for the control targets Suspension Deflection, body acceleration and body travel. Finally the simulation result prove the effectiveness of the active Suspension system with -synthesis controller. Keywords:Quarter car active Suspension system, optimal control, robust control, linear quadratic regulator DOI: 10.7176/IEL/10-2-04 Publication date:March 31st 202
Hamid Reza Karimi - One of the best experts on this subject based on the ideXlab platform.
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robust fault tolerant h control of active Suspension systems with finite frequency constraint
Mechanical Systems and Signal Processing, 2015Co-Authors: Rongrong Wang, Hamid Reza Karimi, Hui Jing, Nan ChenAbstract:Abstract In this paper, the robust fault-tolerant (FT) H ∞ control problem of active Suspension systems with finite-frequency constraint is investigated. A full-car model is employed in the controller design such that the heave, pitch and roll motions can be simultaneously controlled. Both the actuator faults and external disturbances are considered in the controller synthesis. As the human body is more sensitive to the vertical vibration in 4–8 Hz, robust H ∞ control with this finite-frequency constraint is designed. Other performances such as Suspension Deflection and actuator saturation are also considered. As some of the states such as the sprung mass pitch and roll angles are hard to measure, a robust H ∞ dynamic output-feedback controller with fault tolerant ability is proposed. Simulation results show the performance of the proposed controller.
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robust output feedback based fault tolerant control of active Suspension with finite frequency constraint
IFAC-PapersOnLine, 2015Co-Authors: Hui Jing, Hamid Reza Karimi, Rongrong Wang, Mohammed Chadli, Fengjun YanAbstract:Abstract In this paper, the H∞ fault-tolerant control (FTC) problem of active Suspensions with finite-frequency constraints is investigated. A full-car model is employed in the controller design such that the heave, pitch and roll motions can be simultaneously controlled. Both the actuator faults and external disturbance are considered in the controller design. As the human body is more sensitive to the vertical vibration in 4-8Hz, robust H∞ control with finite frequency constraints is designed. From the practical perspective, a robust dynamic output-feedback controller with fault tolerant ability is proposed, while other performances such as Suspension Deflection and actuator saturation are also considered. Compared with passive Suspension, the performance of the proposed controller is more effective, especially in 4-8 Hz range.
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output feedback based h_ infty control for vehicle Suspension systems with control delay
IEEE Transactions on Industrial Electronics, 2014Co-Authors: Xingjian Jing, Hamid Reza KarimiAbstract:This paper deals with the problem of output-feedback H∞ control for a class of active quarter-car Suspension systems with control delay. The dynamic system of the Suspension systems is first formed in terms of the control objectives, i.e., ride comfort, road holding, Suspension Deflection, and maximum actuator control force. Then, the objective is to the design of the dynamic output-feedback H∞ controller in order to ensure asymptotic stability of the closed-loop system with H∞ disturbance attenuation level and the output constraints. Furthermore, using Lyapunov theory and linear matrix inequality (LMI) approach, the existence of admissible controllers is formulated in terms of LMIs. With these satisfied conditions, a desired dynamic output-feedback controller can be readily constructed. Finally, a quarter-vehicle model is exploited to demonstrate the effectiveness of the proposed method.
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static output feedback control for vehicle Suspensions a single step linear matrix inequality approach
Mathematical Problems in Engineering, 2013Co-Authors: Josep Rubiomassegu, Josep M. Rossell, Francisco Palaciosquinonero, Hamid Reza KarimiAbstract:In this paper, a new strategy to design static output-feedback controllers for a class of vehicle Suspension systems is presented. A theoretical background on recent advances in output-feedback control is first provided, which makes possible an effective synthesis of static output-feedback controllers by solving a single linear matrix inequality optimization problem. Next, a simplified model of a quarter-car Suspension system is proposed, taking the ride comfort, Suspension stroke, road holding ability, and control effort as the main performance criteria in the vehicle Suspension design. The new approach is then used to design a static output-feedback controller that only uses the Suspension Deflection and the sprung mass velocity as feedback information. Numerical simulations indicate that, despite the restricted feedback information, this static output-feedback controller exhibits an excellent behavior in terms of both frequency and time responses, when compared with the corresponding state-feedback controller.
Hui Jing - One of the best experts on this subject based on the ideXlab platform.
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robust finite frequency h control of full car active Suspension
Journal of Sound and Vibration, 2019Co-Authors: Rongrong Wang, Hui Jing, Jiading BaoAbstract:Abstract In this paper, the finite-frequency H∞ control problem of active Suspensions is investigated. In view of the human body is much sensitive to the vertical vibrations between 4 and 8 Hz, a robust finite-frequency state-feedback H∞ controller is introduced to suppress the sprung vibration in the concerned frequency range. In order to simultaneously control the vehicle heave, roll, and pitch motions, a full-car Suspension model is adopted. Suspension parameter uncertainties, actuator saturation, and Suspension Deflection constraints are all considered in the model, and a robust controller is designed to handle the parameter uncertainties and achieve the prescribed H∞ performance. Simulation with different road conditions and parameter uncertainties are performed and the results illustrate the effectiveness of the proposed controller.
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robust fault tolerant h control of active Suspension systems with finite frequency constraint
Mechanical Systems and Signal Processing, 2015Co-Authors: Rongrong Wang, Hamid Reza Karimi, Hui Jing, Nan ChenAbstract:Abstract In this paper, the robust fault-tolerant (FT) H ∞ control problem of active Suspension systems with finite-frequency constraint is investigated. A full-car model is employed in the controller design such that the heave, pitch and roll motions can be simultaneously controlled. Both the actuator faults and external disturbances are considered in the controller synthesis. As the human body is more sensitive to the vertical vibration in 4–8 Hz, robust H ∞ control with this finite-frequency constraint is designed. Other performances such as Suspension Deflection and actuator saturation are also considered. As some of the states such as the sprung mass pitch and roll angles are hard to measure, a robust H ∞ dynamic output-feedback controller with fault tolerant ability is proposed. Simulation results show the performance of the proposed controller.
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robust output feedback based fault tolerant control of active Suspension with finite frequency constraint
IFAC-PapersOnLine, 2015Co-Authors: Hui Jing, Hamid Reza Karimi, Rongrong Wang, Mohammed Chadli, Fengjun YanAbstract:Abstract In this paper, the H∞ fault-tolerant control (FTC) problem of active Suspensions with finite-frequency constraints is investigated. A full-car model is employed in the controller design such that the heave, pitch and roll motions can be simultaneously controlled. Both the actuator faults and external disturbance are considered in the controller design. As the human body is more sensitive to the vertical vibration in 4-8Hz, robust H∞ control with finite frequency constraints is designed. From the practical perspective, a robust dynamic output-feedback controller with fault tolerant ability is proposed, while other performances such as Suspension Deflection and actuator saturation are also considered. Compared with passive Suspension, the performance of the proposed controller is more effective, especially in 4-8 Hz range.
Rongrong Wang - One of the best experts on this subject based on the ideXlab platform.
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robust finite frequency h control of full car active Suspension
Journal of Sound and Vibration, 2019Co-Authors: Rongrong Wang, Hui Jing, Jiading BaoAbstract:Abstract In this paper, the finite-frequency H∞ control problem of active Suspensions is investigated. In view of the human body is much sensitive to the vertical vibrations between 4 and 8 Hz, a robust finite-frequency state-feedback H∞ controller is introduced to suppress the sprung vibration in the concerned frequency range. In order to simultaneously control the vehicle heave, roll, and pitch motions, a full-car Suspension model is adopted. Suspension parameter uncertainties, actuator saturation, and Suspension Deflection constraints are all considered in the model, and a robust controller is designed to handle the parameter uncertainties and achieve the prescribed H∞ performance. Simulation with different road conditions and parameter uncertainties are performed and the results illustrate the effectiveness of the proposed controller.
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robust fault tolerant h control of active Suspension systems with finite frequency constraint
Mechanical Systems and Signal Processing, 2015Co-Authors: Rongrong Wang, Hamid Reza Karimi, Hui Jing, Nan ChenAbstract:Abstract In this paper, the robust fault-tolerant (FT) H ∞ control problem of active Suspension systems with finite-frequency constraint is investigated. A full-car model is employed in the controller design such that the heave, pitch and roll motions can be simultaneously controlled. Both the actuator faults and external disturbances are considered in the controller synthesis. As the human body is more sensitive to the vertical vibration in 4–8 Hz, robust H ∞ control with this finite-frequency constraint is designed. Other performances such as Suspension Deflection and actuator saturation are also considered. As some of the states such as the sprung mass pitch and roll angles are hard to measure, a robust H ∞ dynamic output-feedback controller with fault tolerant ability is proposed. Simulation results show the performance of the proposed controller.
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robust output feedback based fault tolerant control of active Suspension with finite frequency constraint
IFAC-PapersOnLine, 2015Co-Authors: Hui Jing, Hamid Reza Karimi, Rongrong Wang, Mohammed Chadli, Fengjun YanAbstract:Abstract In this paper, the H∞ fault-tolerant control (FTC) problem of active Suspensions with finite-frequency constraints is investigated. A full-car model is employed in the controller design such that the heave, pitch and roll motions can be simultaneously controlled. Both the actuator faults and external disturbance are considered in the controller design. As the human body is more sensitive to the vertical vibration in 4-8Hz, robust H∞ control with finite frequency constraints is designed. From the practical perspective, a robust dynamic output-feedback controller with fault tolerant ability is proposed, while other performances such as Suspension Deflection and actuator saturation are also considered. Compared with passive Suspension, the performance of the proposed controller is more effective, especially in 4-8 Hz range.
Michael Z. Q. Chen - One of the best experts on this subject based on the ideXlab platform.
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multiplexed model predictive control for active vehicle Suspensions
International Journal of Control, 2015Co-Authors: Yinlong Hu, Michael Z. Q. ChenAbstract:Multiplexed model predictive control (MMPC) is a recently proposed efficient model predictive control (MPC) algorithm, which can effectively reduce the computational burden of the online optimisation in MPC implementation by updating the control inputs in an asynchronous manner. This paper investigates the application of MMPC in active vehicle Suspension design. An MMPC controller integrated with soft constraints and a Kalman filter is proposed based on a full-car model. Ride comfort, roadholding and Suspension Deflection are considered in this paper, where ride comfort and roadholding are formulated as a quadratic cost function in terms of sprung mass accelerations and tyre Deflections, while Suspension Deflection performance is formulated as a hard constraint. The saturation of the actuator force is also considered and formulated as a hard constraint as well. Numerical simulation is performed with respect to different choices of weighting factors, vehicle speeds and control horizons. The results show th...
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semi active Suspension with semi active inerter and semi active damper
IFAC Proceedings Volumes, 2014Co-Authors: Michael Z. Q. Chen, Guanrong ChenAbstract:Abstract This paper investigates the application of semi-active inerter in semi-active Suspension. A semi-active inerter is defined as an inerter whose inertance can be adjusted within a finite bandwidth by on-line control actions. A force-tracking approach to designing semi-active Suspension with a semi-active inerter and a semi-active damper is proposed, where the target active control force derived by LQR control in the “Reciprocal State-Space” (RSS) framework is tracked by controlling the semi-active damping coefficient and semi-active inertance. One of the advantages of the proposed method is that it is straightforward to use the acceleration information in the controller design. Simulation results demonstrate that the semi-active Suspension with a semi-active inerter and a semi-active damper can track the target active control force much better than the conventional semi-active Suspension (which only contains a semi-active damper) does. As a consequence, the overall performance in ride comfort, Suspension Deflection and road holding is improved, which effectively demonstrates the necessity and the benefit of introducing semi-active inerter in vehicle Suspension.
