Active Control of Ultra-Compact Vehicle Seat with Voice Coil Motor:(Examination of the Control Performances during Driving on a Bad Road)

概要

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Several manufacturers have recently marketed ultra-compact electric vehicles. We propose the use of active seat suspension to improve the ride comfort on bad roads as a high value-added product. Ultra-compact electric vehicles can be installed with actuators for active seat suspension with a voice coil motor. The main purpose of this study was to inspect the utility and effectiveness of active seat suspension. Ultra-compact vehicles are different from standard cars in that they are frequently driven on narrow roads with poor surfaces. There are numerous barriers and small obstacles on poor road on a road surfaces and adverse effects on ride comfort in vehicles are expected during comparatively low-speed runs. We tested ride comfort with two different control techniques including sliding mode control on undulating and gravel roads. The results indicated that acceleration was reduced over undulating and gravel roads when sliding mode control was applied, and vibration was suppressed when the driver's weight changed.