A Fuzzy-Active Force Control Architecture Based in Characterizing Nonlinear Systems’ Behavior

Ramli, Hanif; Meon, Mohd Suhairil; Mohamed, Tengku Luqman Tengku; Isa, Ahmad Azlan Mat; Mohamed, Zulkifli

doi:10.1016/j.proeng.2012.07.326

Cited by 13 publications

(3 citation statements)

References 14 publications

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“…For the range of the membership functions, they had been set according to the input range that was entered through the FLC after passing through the P controller. In this study, the triangular shape had been chosen due to the shape was commonly used by other researchers [19], [26], [27]. There were two sets of rules that were implemented to test the sensitivity of the controller.…”

Section: Fuzzy Logic Controllermentioning

confidence: 99%

Active tremor control in human-like hand tremor using fuzzy logic

Jamaludin

As’arry

Musab

et al. 2021

IJEECS

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Tremoris the vibration in sinusoidal orientation that is experienced regularly by a person with Parkinson’s disease (PD), which disturbs their daily activities. One solution that may be used to counter this tremor effect is by developing an active tremor control system in LabVIEW for linear voice coil actuator (LVCA), where the system uses proportional (P) controller and various types of fuzzy logic controller (FLC) as a hybrid controller to reduce tremor vibration. From this research, it can be concluded that the best controller for tremor reduction is the P+FLC 1st set of rules, compared to P+FLC 2nd set of rules, and P controller only, with the highest percentage of 88.39% of tremor reduction with the actual tremor vibration of PD patients as the reference result. The P+FLC 2nd set of rules has the highest percentage of tremor reduction with a value of 86.81%, whereas P controller only has the highest tremor reduction percentage of 67.10%. This percentage of tremor reduction is based on the power spectral density (PSD) values, in which it represents the intensity of the tremor vibration. This experimental study can be used as an initial step for researchers and engineers to design and develop an anti-tremor device in the future.

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Section: Fuzzy Logic Controllermentioning

confidence: 99%

Active tremor control in human-like hand tremor using fuzzy logic

Jamaludin

As’arry

Musab

et al. 2021

IJEECS

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“…The controller scheme used in this research is based on the intelligent active force control (AFC) scheme. The idea of AFC controller scheme was introduced by Hewit [21], with most of its applications is in rotational mechanical movement such as in [22,23]. Many other researchers have also successfully applied the AFC controller in mechanical translational movement studies [5,24].…”

Section: Intelligent Active Force Controlmentioning

confidence: 99%

Semi Active Seat Suspension System using Modified Intelligent Active Force Control

Rosli

Mohamed

Priyandoko

2021

IJAME

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This paper presents a modified intelligent active force control (AFC) control strategy in a semi active seat suspension system. The main actuator studied in this research is the Magneto-rheological (MR) damper. Since a semi-active device like MR damper can only dissipate energy so a modified version of AFC controller is needed. The modified AFC controller main function is to determine the appropriate control force. A Heaviside Step Function (HSF) is used to ensure the MR damper produce the desired damping force according to the control force generated by AFC controller. The phenomenological Bouc-Wen is used to study the effectiveness of the new AFC controller taking into account the dynamic response of the damper. Sinusoidal signals simulated as vibration sources are applied to the seat suspension system to investigate the improvement of ride comfort as well as to ascertain the new AFC controller robustness. Comparison of body acceleration signals from the passive suspension with AFC controller semi active seat suspension system shows up to to 45% improvement to the occupant ride comfort under different vibration intensities.

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“…These have included classical PID control, 6 multi-objective control, 7 a robust design method of adaptive sliding mode control 8 and active force control based architecture in characterising the twin rotor MIMO system. 9 Also, distributed control literature provides numerous beneficial approaches for achieving stability. It was shown by Fax and Murray 10 that stability of a formation depends on the agent model and eigenvalues of the graph Laplacian.…”

Section: Introductionmentioning

confidence: 99%

Design and investigation of pole assignment controller for driving nonlinear electro hydraulic actuator with new active suspension system model

Al-Zughaibi

Grosvenor

Okon

2019

Proceedings of the Institution of Mechanical Engineers, Part D:

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Fully active electrohydraulic control of a quarter-car test rig is considered from both a modelling and experimental point of view. This paper develops a nonlinear active hydraulic design for the active suspension system, which improves the inherent trade-off between ride quality and suspension travel. The novelty is in the use of pole assessment controller to drive a nonlinear active suspension with a new insight into the model through consideration of a new term, friction forces. Therefore, this model has taken into account the dynamic inclination angle [Formula: see text] between linkage and actuator regardless of the fact that the designer made an only vertical motion (bounce mode) of the wheel and body units. The second contribution of this paper is that it investigated the control force generation, therefore, the nonlinear hydraulic actuator whose effective bandwidth depends on the magnitude of the suspension travel, which incorporates the dynamic equation of servovalve, is deeply researched. The nonlinear friction model is accurately established, which relies on the dynamics system analysis and the fact of slipping the body on lubricant supported bearings; this model will caption all the friction behaviours that have been observed experimentally. In addition, the hydraulic system is used to generate the system inputs as a road simulator. The controller smoothly shifts its focus between the conflicting objectives of ride comfort and rattle space utilisation, softening the suspension when suspension travel is small and stiffening it as it approaches the travel limits. Thus, the nonlinear design allows the closed-loop system to behave differently in different operating regions. The improvement achieved with our design is illustrated through comparative experiments and simulations. C++ compiler environment is used to simulate the physical system to be controlled. The results show good servo control and fast regulation of abrupt disturbances.

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A Fuzzy-Active Force Control Architecture Based in Characterizing Nonlinear Systems’ Behavior

Cited by 13 publications

References 14 publications

Active tremor control in human-like hand tremor using fuzzy logic

Active tremor control in human-like hand tremor using fuzzy logic

Semi Active Seat Suspension System using Modified Intelligent Active Force Control

Design and investigation of pole assignment controller for driving nonlinear electro hydraulic actuator with new active suspension system model

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