2002
DOI: 10.1155/2003/897173
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A Hybrid Control Policy for Semi‐Active Vehicle Suspensions

Abstract: Various control policies, such as skyhook and groundhook control, have often been considered for semi-active vehicle suspensions. Past studies have shown the performance limitations of these policies, as well as others that have been considered for vehicle applications. This study will provide a look into an alternative control technique called "hybrid control," which attempts to merge the performance benefits of skyhook and groundhook control. The results of this study are based on an experimental evaluation … Show more

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Cited by 49 publications
(36 citation statements)
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“…The equations (1-3) were obtained by inserting equations (4)(5) in the space state representation of a QoV model that lacks a damper. Thus, the passive damping force component is inserted in the A matrix, and the semi-active component force is inserted in the B matrix.…”
Section: Lpv/h Controller Designmentioning
confidence: 99%
See 1 more Smart Citation
“…The equations (1-3) were obtained by inserting equations (4)(5) in the space state representation of a QoV model that lacks a damper. Thus, the passive damping force component is inserted in the A matrix, and the semi-active component force is inserted in the B matrix.…”
Section: Lpv/h Controller Designmentioning
confidence: 99%
“…Some controllers optimize one objective, while the actual goal is the compromise between comfort and road holding. Some recent works are focused on the decrease in the compromise between comfort and road holding [4]. An interesting strategy is the LPV/H approach which solves the compromise adequately and with low on-line computation, [1], [5].…”
Section: Introductionmentioning
confidence: 99%
“…In the steady-state case, the response to the harmonic excitation was analyzed, while in the transient one (Ahmadian and Vahdati, 2006), the response to the unit step. To ensure a compromise between the requirements for both comfort and safety, hybrid control with a MR damper is used (Goncalves and Ahmadian, 2003) and a combination of sky-hook and ground-hook control. The damping control algorithm was changed by a step function (on-off control) in order to simulate the behaviour of the damper between the constant reference point and a spring-supported (sky-hook -comfort) or non spring-supported mass (ground-hook -safety).…”
Section: Introductionmentioning
confidence: 99%
“…This paper focuses on a sensitivity control (a type of gradient approach) in a car suspension system, which can adjust the current input to the MR damper. [1][2][3][4][5][6][7][8][9][10] However the concept presented herein can be extended to other applications.…”
Section: Introductionmentioning
confidence: 99%
“…On the other hand, a MR damper applies various levels of magnetic fields to vary the viscosities of the MR fluids. [3][4][5][6][7][40][41][42][43] However, the semi-active suspension system shows worse performance than the active system because the control force can be generated only when the desired control force and the damping force act in the same direction. From this view, semi-active suspension systems are better than the fully active systems because of their low cost and competitive performance.…”
Section: Introductionmentioning
confidence: 99%