Disturbance Rejection in a One‐Half Semiactive Vehicle Suspension by means of a Fuzzy-H∞ Controller

Félix-Herrán, Luis C.; Mehdi, Driss; Rodríguez-Ortiz, J. de J.; Benítez, Victor H.; Ramirez‐Mendoza, Ricardo A.; Soto, Rogelio

doi:10.1155/2019/4532635

Cited by 7 publications

(5 citation statements)

References 39 publications

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“…However, this model has the disadvantage that it only considers vibrations in the vertical direction but cannot evaluate in other directions [25,26]. Te pitch and roll half car models were used in the study of semiactive suspension systems to evaluate the vibration quality in two other directions of cars: longitudinal and lateral [27,28]. For the most general assessment of the efectiveness of the controlled suspension system, the full car model of 7 DOF is considered to be the most accurate and closest to reality [29,30].…”

Section: Related Workmentioning

confidence: 99%

Two-Layer Parallel Fuzzy Logic Controller Design for Semiactive Suspension System with a Full Car Model

Tấn

2023

Shock and Vibration

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This paper presents research results on semiactive suspension using a fuzzy logic controller. Firstly, a full car model is built with 7 degrees of freedom using a semiactive suspension system at all four wheels. The dynamic equations are converted to the state space representation to facilitate control design and improve accuracy in simulation design. Then, a two-layer parallel fuzzy logic controller is designed with 49 and 25 rules for two fuzzy inference systems. In this way, the fuzzy logic controller is able to respond to a wide operating range of the system and the output force is smoother. Finally, the evaluation results are performed in the frequency and time domains with a real random road profile, and they showed that the root mean square value of the signals when using a semiactive suspension system with the proposed fuzzy logic controller decreased by over 25% compared to the passive suspension system. This clearly demonstrates the effectiveness of the proposed controller in improving the ride comfort, the road holding and ensuring the suspension travel of cars.

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Section: Related Workmentioning

confidence: 99%

Two-Layer Parallel Fuzzy Logic Controller Design for Semiactive Suspension System with a Full Car Model

Tấn

2023

Shock and Vibration

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“…In the automotive industry, MR dampers are increasingly used to design semiactive suspension systems. is damper class provides a fast, smooth, and continuously variable damping coefficient with a wide range of available forces preserving low power consumption [46]. e range of adjustability is virtually within the saturation state, making MR damper technology an excellent replacement for conventional suspension dampers.…”

Section: One-quarter Vehicle Modelmentioning

confidence: 99%

“…erefore, the benchmarks that are going to be done further herein consider those performance indices. A brief explanation of both indices is given below and is based on reported work [43][44][45][46]. e comfort index is the passenger's perception when traveling in the vehicle.…”

Section: Performance Criteriamentioning

confidence: 99%

“…Vibrations generated by the road profile go through the physical elements of the vehicle's suspension toward the passengers. Although the passenger perception is subjective and depends on each person, it is obligatory to come up with a standardized criterion to determine and measure passenger comfort [46]. Vehicle stability index is related to the suspension's ability to hold the tires in contact with the road profile even in the presence of surface irregularities [45].…”

Section: Performance Criteriamentioning

confidence: 99%

See 1 more Smart Citation

Optimal Skyhook and Groundhook Control for Semiactive Suspension: A Comprehensive Methodology

Díaz-Choque

Félix-Herrán

Ramirez‐Mendoza

2021

Shock and Vibration

Self Cite

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This manuscript establishes a methodology that guides the designers to develop an optimal controller for a semiactive suspension system. The methodology’s processes are generally explained and straightforwardly, so a designer can extrapolate the methodology to a specific problem. Furthermore, this research presents an optimal control strategy for a semiactive control applied to a quarter vehicle model as an example of using the methodology. A particular interest is made in the advantages of such a simple synthesis and in the compromises that must be done in skyhook and groundhook control law applications. This manuscript exposes a logical and straightforward approach for choosing the controllers’ design parameters; also, efforts must be made to express precise performance specifications and constraints in the control design. The herein methodology could be relevant in the process design for intelligent suspensions, from one-quarter toward the entire vehicle.

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“…The latter can be subdivided into two categories: active and semi-active. In an active suspension, its behaviour depends entirely on the forces exerted by an actuator; while a semiactive maintains the passive components and the actuator [2]. Smart suspensions are often used in order to improve passenger comfort and/or road holding by following specific criteria.…”

Section: Introductionmentioning

confidence: 99%

Passenger-Oriented Intelligent Suspension with a Biodynamic Model and Skyhook Control

Granados-Monge¹,

Montaño-Moreno²,

Quiroga-Ocaña³

et al. 2021

Advances in Automation and Robotics Research

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Intelligent suspension systems assist in decreasing the impact of road disturbances on passenger comfort, and its design requires a mathematical analysis that includes the elements of the suspension and the passenger's vertical dynamics. The contribution of this research is to merge a 4 degrees-of-freedom (DOF) Boileau-Rakheja biodynamic passenger model with a 3-DOF suspension model to generate more accurate representations of the displacements and accelerations of the main passenger's masses. Moreover, the contribution is complemented with a Skyhook controller in a semi-active 7-DOF one-quarter vehicle suspension to improve passenger comfort, and a case study presents tests in frequency and time domains. The analysis was conducted by establishing a regulatory closed-loop feedback control for a state-space system, simulating its behavior using MATLAB/Simulink, and comparing the results against specific performance criteria. The active suspension's frequency response showed a 40% reduction in the displacement transmissibility of the suspended masses at low frequencies (0-4 Hz), but exhibited a 2-10% increase in the rms acceleration at high frequencies (4-15 Hz). The herein results could be the base for further studies in the passenger comfort and road holding for one quarter, but also for half and full vehicle.

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Disturbance Rejection in a One‐Half Semiactive Vehicle Suspension by means of a Fuzzy-H_∞ Controller

Cited by 7 publications

References 39 publications

Two-Layer Parallel Fuzzy Logic Controller Design for Semiactive Suspension System with a Full Car Model

Two-Layer Parallel Fuzzy Logic Controller Design for Semiactive Suspension System with a Full Car Model

Optimal Skyhook and Groundhook Control for Semiactive Suspension: A Comprehensive Methodology

Passenger-Oriented Intelligent Suspension with a Biodynamic Model and Skyhook Control

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