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This paper proposes novel high accuracy road condition estimation called Tire Grip Margin (TGM), and TGM is estimated by using dual pitman arm type steer-by-wire and lateral force sensor and estimator. In addition, we propose cornering stability control technique based on the TGM. It can help driver and vehicle before unstable state. We verify our proposed system achieves robust vehicle dynamics control...
Accidents caused by automatic doors frequently occur. Infrared sensor or force sensor is often used for automatic doors to detect the presence of a human, and ensure the safety of doors. But in the case of train doors, we can not use infrared sensor and force sensor because of several reasons. In addition, train doors should be gated exactly not to disturb the train services. This paper suggests two...
In this paper, we design a new controller for power-assisted wheelchairs. Conventional power-assist controllers only focus on the amplification of the human input force using torque sensor. Our proposed controller does not use a torque sensor but an electromyogram sensor to estimate the driver's intention. We also use a disturbance observer to compensate for the lack of propelling torque information...
This paper generalizes the structure of force-sensor-less power assist control (FSPAC) which is a essential technology to design a feedback controller in a human-friendly way. Based on the analysis of the control structure, this paper clarifies the functions of the generalized force-sensor-less power assist control; particularly the functions of two force observers in FSPAC are made clear. Since the...
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