Research on Vibration Reduction Performance of Electromagnetic Active Seat Suspension Based on Sliding Mode Control

Xie, Pengshu; Che, Yusong; Liu, Zhengbin; Wang, Guoqiang

doi:10.3390/s22155916

Cited by 7 publications

(3 citation statements)

References 30 publications

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“…[10] proposed an electromagnetic damper with resonant shunt to suppress the vibration and the effect on the damping parameters were analysed theoretically and justified experimentally. [11] carried out simulation work on seat suspension with electromagnetic levitation component based on C level road surface.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Vibration Isolation Using Electromagnetic Damping

DAKSHNAMOORTHY,

RYNTATHIANG,

SIVAKUMAR

et al. 2024

mech

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This study presents an experimental investigation focused on the reduction of vibrations using electromagnetic damping techniques. The objective is to explore the effectiveness of electromagnetic damping in mitigating undesirable vibrations and enhancing system stability. A single-degree vertically constrained spring-mass system, two pairs of electromagnets, Lab VIEW software, an accelerometer, DAQ card were used for the experimentation. SWG 17 and SWG19 coil electromagnets were used in different conditions of energization to evaluate the effectiveness of the electromagnetic damping system. The parameters such as excitation frequency, vibration amplitude, and electromagnetic damping force are systematically varied and their effects on vibration isolation are analysed. The results demonstrate that the electromagnetic damping system effectively isolates base induced vibrations across a range of frequencies and amplitudes. The experimental data reveal that at lower frequencies, upto 6Hz the amplitude of RMS acceleration was same as that of the system without energizing the electromagnet and at higher frequencies, above 10 Hz, all 2V,4V and 6V of energized electromagnets in the SDVC system showed negligible variation in the RMS amplitude of acceleration. A substantial isolation of top plate was observed at higher frequencies of base excitation.

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Section: Introductionmentioning

confidence: 99%

Experimental Study of Vibration Isolation Using Electromagnetic Damping

DAKSHNAMOORTHY,

RYNTATHIANG,

SIVAKUMAR

et al. 2024

mech

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show abstract

“…Reference [ 7 ] used a vibration-based damage detection method using structural health monitoring techniques. Reference [ 8 ] researched vibration reduction performance based on sliding mode control for vehicle seats. Reference [ 9 ] discussed an input shaping control technique to reduce vibrations in machining.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Vibration Control Experimental System Design of a Flexible Arm Using Interactive Actuations from Shape Memory Alloy

Jin

Deng

2023

Sensors

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The flexible arm easily vibrates due to its thin structural characteristics, which affect the operation accuracy, so reducing the vibration of the flexible arm is a significant issue. Smart materials are very widely used in the research topic of vibration suppression. Considering the hysteresis characteristic of the smart materials, based on previous simulation research, this paper proposes an experimental system design of nonlinear vibration control by using the interactive actuation from shape memory alloy (SMA) for a flexible arm. The experiment system was an interactive actuator–sensor–controller combination. The vibration suppression strategy was integrated with an operator-based vibration controller, a designed integral compensator and the designed n-times feedback loop. In detail, a nonlinear vibration controller based on operator theory was designed to guarantee the robust stability of the flexible arm. An integral compensator based on an estimation mechanism was designed to optimally reduce the displacement of the flexible arm. Obtaining the desired tracking performance of the flexible arm was a further step, by increasing the n-times feedback loop. From the three experimental cases, when the vibration controller was integrated with the designed integral compensator, the vibration displacement of the flexible arm was much reduced compared to that without the integral compensator. Increasing the number of n-times feedback loops improves the tracking performance. The desired vibration control performance can be satisfied when n tends to infinity. The conventional PD controller stabilizes the vibration displacement after the 7th vibration waveform, while the vibration displacement approaches zero after the 4th vibration waveform using the proposed vibration control method, which is proved to be faster and more effective in controlling the flexible arm’s vibration. The experimental cases verify the effectiveness of the proposed interactive actuation vibration control approach. It is observed from the experimental results that the vibration displacement of the flexible arm becomes almost zero within less time and with lower input power, compared with a traditional controller.

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“…Electromagnetic suspension has fast response characteristics, good control characteristics, and easy decoupling control, and, as such, has become a research hotspot in the field of active suspension [4][5][6]. Research on electromagnetic active suspension mainly focuses on the feed characteristics of the actuator [7][8][9], control method research [10][11][12], and suspension performance [13,14].…”

Section: Introductionmentioning

confidence: 99%

Vehicle Stability Analysis under Extreme Operating Conditions Based on LQR Control

Zhou

Bao³

et al. 2022

Sensors

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Under extreme working conditions such as high-speed driving on roads with a large road surface unevenness coefficient, turning on a road with a low road surface adhesion coefficient, and emergency acceleration and braking, a vehicle’s stability deteriorates sharply and reduces ride comfort. There is extensive existing research on vehicle active suspension control, trajectory tracking, and control methods. However, most of these studies focus on conventional operating conditions, while vehicle stability analysis under extreme operating conditions is much less studied. In order to improve the stability of the whole vehicle under extreme operating conditions, this paper investigates the stability of a vehicle under extreme operating conditions based on linear quadratic regulator (LQR) control. First, a seven degrees of freedom (7-DOF) dynamics model of the whole vehicle is established based on the use of electromagnetic active suspension, and then an LQR controller of the electromagnetic active suspension is designed. A joint simulation platform incorporating MATLAB and CarSim was built, and the CarSim model is verified by real vehicle tests. Finally, the stability of the vehicle under four different ultimate operating conditions was analyzed. The simulation results show that the root mean square (RMS) values of body droop acceleration and pitch angle acceleration are improved by 57.48% and 28.81%, respectively, under high-speed driving conditions on Class C roads. Under the double-shift condition with a low adhesion coefficient, the RMS values of body droop acceleration, pitch acceleration, and roll angle acceleration are improved by 58.25%, 55.41%, and 31.39%, respectively. These results indicate that electromagnetic active suspension can significantly improve vehicle stability and reduce driving risk under extreme working conditions when combined with an LQR controller.

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Research on Vibration Reduction Performance of Electromagnetic Active Seat Suspension Based on Sliding Mode Control

Cited by 7 publications

References 30 publications

Experimental Study of Vibration Isolation Using Electromagnetic Damping

Experimental Study of Vibration Isolation Using Electromagnetic Damping

Nonlinear Vibration Control Experimental System Design of a Flexible Arm Using Interactive Actuations from Shape Memory Alloy

Vehicle Stability Analysis under Extreme Operating Conditions Based on LQR Control

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