Topic
Skyhook
About: Skyhook is a research topic. Over the lifetime, 640 publications have been published within this topic receiving 8685 citations.
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TL;DR: In this paper, a road adaptive modified skyhook control for the semi-active Macpherson strut suspension system of hydraulic type is investigated, which incorporates the rotational motion of the unsprung mass.
Abstract: In this paper, a road adaptive modified skyhook control for the semi-active Macpherson strut suspension system of hydraulic type is investigated. A new control-oriented model, which incorporates the rotational motion of the unsprung mass, is introduced. The control law extends the conventional skyhook-groundhook control scheme and schedules its gains for various road conditions. Using the vertical acceleration data measured, the road conditions are estimated by using the linearized new model developed. Two filters for estimating the absolute velocity of the sprung mass and the relative velocity in the rattle space are also designed. The hydraulic semi-active actuator dynamics are incorporated in the hardware-in-the-loop tuning stage of the control algorithm developed. The optimal gains for the ISO road classes are discussed. Experimental results are included. @DOI: 10.1115/1.1434265#
245 citations
TL;DR: In this paper, a semi-active control strategy that a priori satisfies the principal limitations of a semiactive suspension actuator (dissipative constraint and force bounds) is introduced using the tools of the linear parameter varying (LPV) theory.
236 citations
TL;DR: In this paper, a cylindrical magneto-rheological (MR) seat damper is designed on the basis of the Bingham model of the MR fluid, and a skyhook controller is formulated and realized in a closed-loop control fashion.
Abstract: This paper presents vibration control of a semi-active seat suspension with a magneto-rheological (MR) fluid damper, which is applicable to commercial vehicles such as large size of trucks. A cylindrical MR seat damper is designed on the basis of the Bingham model of the MR fluid. After manufacturing the seat damper, field-dependent damping force characteristics are experimentally evaluated. A semi-active seat suspension system installed with the seat damper is then constructed and its governing equation of motion is derived. A skyhook controller to reduce vibration level at the driver’s seat is formulated and realized in a closed-loop control fashion. The control responses, such as acceleration transmissibility, are investigated in both frequency and time domains. In addition, a full-vehicle model featuring the proposed semi-active seat suspension is established and its vibration control performances are evaluated via the hardware-in-the-loop simulation (HILS).
226 citations
TL;DR: In this article, the authors highlight the practical viability of a new and novel hybrid control technique applied to a vehicle active suspension system of a quarter car model using skyhook and adaptive neuro active force control (SANAFC).
218 citations
TL;DR: In this article, a semi-active damper is incorporated into a single-degree-of-freedom (sdof) system model subject to base excitation, and its performance is evaluated in terms of the root-mean-square (rms) acceleration transmissibility, and is compared with those of a passive damper and an ideal skyhook damper.
206 citations