Active Seat Suspension for Ultra-Compact Mobility

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Other Title
  • 超小型モビリティ用アクティブシートサスペンション
  • （VCMによる乗り心地向上に関する基礎的考察）
  • (Fundamental Consideration on improvement of ride comfort using VCM)

Abstract

<p>In recent years, ultra-compact mobility has been used as new transportation in tourist spots and urban areas. This ultra-compact mobility is an electric automobile for 1 or 2 passengers and is currently being sold by several automobile manufacturers. However, due to lightweight, ultra-compact mobility is subject to vibration from road irregularities and road surface steps. Therefore, it is necessary to develop a vibration control system for safe and comfortable driving. We have proposed vibration control device "active seat suspension" to improve ride comfort. We previously studied a vibration control method by active seat suspension using voice coil motor for actuator. it is necessary to grasp the thrust characteristics when the motor is greatly displaced to make comfortable car for occupant. Therefore, in this paper, we use magnetic field analysis the thrust characteristic of the voice coil motor to confirmed. We investigated the thrust decreases when the position is distant from center of stroke. In the future, it is necessary to realize a system that weights variables other than displacement in order to further improve ride comfort. Therefore, it is required to construct a control system that is robust against changes in the thrust constant due to displacement. Furthermore, it is necessary to estimate the input vibration in detail in advance and design a motor that can exert sufficient thrust against the displacement.</p>

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