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A Novel Electrical Variable Stiffness Device for Vehicle Seat Suspension Control With Mismatched Disturbance Compensation

Journal Article


Abstract


  • This paper presents a novel electrical variable

    stiffness device (EVSD) and its application in seat suspensions. The EVSD is inspired by the conventional mechanical

    variable stiffness device (VSD) and the force-current analogy, which applies an inductor and a variable resistor to

    simulate the functions of the spring and variable damper

    in the mechanical VSD. The electrical system has less

    physical limitation than the mechanical one in the practical

    application. Besides, the EVSD requires no power supply

    except for control signals at milliwatts level. The test result

    shows the stiffness controllability of the proposed EVSD

    and matches with the system model in the simulation. Seat

    suspensions have been extensively utilized in vehicles,

    especially heavy-duty ones, to protect drivers’ health and

    improve the ride comfort. An EVSD-based seat suspension is investigated in this paper. The seat suspension

    applies the suspension deflection, circuit current, and seat

    acceleration, which are all easy to measure with sensors,

    as feedback to estimate the mismatched disturbance in

    the system; and a H∞ controller with compensation of

    the mismatched disturbance is designed for the seat suspension. The experiments validate the effectiveness of the

    proposed seat suspension and controller. This EVSD-based

    seat suspension consumes ignorable energy and has great

    potential in practical applications.

Publication Date


  • 2019

Citation


  • D. Ning, H. Du, S. Sun, W. Li, N. Zhang & M. Dong, "A Novel Electrical Variable Stiffness Device for Vehicle Seat Suspension Control With Mismatched Disturbance Compensation," IEEE-ASME Transactions on Mechatronics, vol. 24, (5) pp. 2019-2030, 2019.

Scopus Eid


  • 2-s2.0-85070853614

Number Of Pages


  • 11

Start Page


  • 2019

End Page


  • 2030

Volume


  • 24

Issue


  • 5

Place Of Publication


  • United States

Abstract


  • This paper presents a novel electrical variable

    stiffness device (EVSD) and its application in seat suspensions. The EVSD is inspired by the conventional mechanical

    variable stiffness device (VSD) and the force-current analogy, which applies an inductor and a variable resistor to

    simulate the functions of the spring and variable damper

    in the mechanical VSD. The electrical system has less

    physical limitation than the mechanical one in the practical

    application. Besides, the EVSD requires no power supply

    except for control signals at milliwatts level. The test result

    shows the stiffness controllability of the proposed EVSD

    and matches with the system model in the simulation. Seat

    suspensions have been extensively utilized in vehicles,

    especially heavy-duty ones, to protect drivers’ health and

    improve the ride comfort. An EVSD-based seat suspension is investigated in this paper. The seat suspension

    applies the suspension deflection, circuit current, and seat

    acceleration, which are all easy to measure with sensors,

    as feedback to estimate the mismatched disturbance in

    the system; and a H∞ controller with compensation of

    the mismatched disturbance is designed for the seat suspension. The experiments validate the effectiveness of the

    proposed seat suspension and controller. This EVSD-based

    seat suspension consumes ignorable energy and has great

    potential in practical applications.

Publication Date


  • 2019

Citation


  • D. Ning, H. Du, S. Sun, W. Li, N. Zhang & M. Dong, "A Novel Electrical Variable Stiffness Device for Vehicle Seat Suspension Control With Mismatched Disturbance Compensation," IEEE-ASME Transactions on Mechatronics, vol. 24, (5) pp. 2019-2030, 2019.

Scopus Eid


  • 2-s2.0-85070853614

Number Of Pages


  • 11

Start Page


  • 2019

End Page


  • 2030

Volume


  • 24

Issue


  • 5

Place Of Publication


  • United States