Controlling quarter car suspension system by proportional derivative and positive position feedback controllers with time delay

Abdelhafez, H. M.; Omara, Osama

doi:10.21595/jve.2017.18056

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…The Quarter Car Model is used [13][14][15][16] with different road profile and surface. The experimental work is associated with simulation work to determine performance of suspension system to investigate the responses of the vehicle due to road disturbances with different suspension system.…”

Section: Experimental Setup For Mr Dampermentioning

confidence: 99%

Experimental investigations of damping characteristic for MR strut by half-power bandwidth method

Yerrawar¹,

Arakerimath²

2018

J. meas. eng.

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In today's automobile, each and every part of vehicle must consider the vibration management. Damping and isolation are the two aspects of vibration management which uses in conjunction to attain the required performance. The Logarithmic decrement method and Bandwidth method are the two major methods for measurement of damping in vibration system. Time domain method is used in Logarithmic decrement whereas the Half power bandwidth method is used in frequency domain analysis. In the present work, quarter car model is used to determine the frequency response analysis of Magnetorheological damper strut. The sprung mass is varying from 82 kg to 132 kg and excitation force is given by cam mechanism which is designed as per the bump size specified by Indian Road Congress (IRC) standard. The fabricated MR damper is tested at different sprung mass with input current from 0.1 A to 0.5 A. It is observed that the damping ratio is varying from 0.04 to 0.21. The results obtained in this paper will be helpful for the Indian auto industry to make more economical and reliable damper strut.

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Section: Experimental Setup For Mr Dampermentioning

confidence: 99%

Experimental investigations of damping characteristic for MR strut by half-power bandwidth method

Yerrawar¹,

Arakerimath²

2018

J. meas. eng.

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“…Therefore, the time-delayed feedback control is suggested and applied to improve the performance of the active and semi-active suspensions, in which time delay and feedback gain coefficient are taken as adjustable control parameters. Abdelhafez and Omara 12 developed the proportion derivative controller and positive position feedback controller with time delay in a quarter-car suspension system to achieve stability and comfort. Li et al 13 designed a delayed positive feedback controller with a controllabledamping and a variable stiffness for a single degree of freedom (SDOF) semi-active suspension on in-vehicle networks.…”

Section: Introductionmentioning

confidence: 99%

Control parameter optimization of a nonlinear vehicle suspension system with time-delayed acceleration feedback

Sun

2020

Journal of Low Frequency Noise, Vibration and Active Control

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A time-delayed acceleration feedback control is proposed to improve the vibration performance of a nonlinear vehicle suspension system. First, the harmonic balance method is applied to obtain the vertical acceleration amplitude of the system excited by simple harmonic road excitation. Then, taking the amplitude of the sprung mass acceleration and control force into account, the single-objective and multiple-objective optimization problems of time-delayed feedback control parameters, respectively, are discussed. Finally, the mathematical simulation is provided to verify the correctness of the optimization results. It is concluded that the nonlinear suspension with optimal time-delayed feedback control has better vibration control performance compared to passive one. The acceleration amplitude of the sprung mass is significantly reduced by the single-objective optimization of the control parameters. Moreover, when the optimal time delay is introduced, the active control force input is fewer than that without time delay. The phenomenon of energy transfer between the sprung mass and the unsprung mass is observed in some road-excitation frequencies.

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“…The reason is that the time delays are unavoidable during the process of sensing and calculating the necessary control forces. Researchers paid a great attention to the stability analysis of delayed controlled systems [10][11][12][13][14][15][16][17][18][19]. Abdelhafez and coauthor applied positive position feedback (PPF) controller to reduce the vibrations of a forced and self-excited nonlinear beam [19].…”

Section: Introductionmentioning

confidence: 99%

Utilizing the time delayed PPF controller to suppress vibrations of a nonlinear system containing real power exponents in damping and restoring forces

Abdelhafez¹

2019

J. vibroeng.

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The time delayed Positive Position Feedback (PPF) controller is utilized to suppress the primary resonance of vibrations of an excited base oscillator by real power exponents of the restoring and damping forces. Multiple scales method is conducted to get the frequency response equations. The stability of the system is studied by using the Lyapunov first method. The influences of system parameters and time delay on the system response are investigated to avoid the jump phenomenon for better system performance. Time margin is deduced for most possible values of controller gain. Analytic results are verified by numerical integration of the original system equations.

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Controlling quarter car suspension system by proportional derivative and positive position feedback controllers with time delay

Cited by 4 publications

References 19 publications

Experimental investigations of damping characteristic for MR strut by half-power bandwidth method

Experimental investigations of damping characteristic for MR strut by half-power bandwidth method

Control parameter optimization of a nonlinear vehicle suspension system with time-delayed acceleration feedback

Utilizing the time delayed PPF controller to suppress vibrations of a nonlinear system containing real power exponents in damping and restoring forces

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