複数ポテンショメータを使用した絶対角度検出に関する研究

抄録

With the declining birthrate and aging population, the demand for the motorized wheelchair is increasing. A wheelchair that can be instantly moved in all directions by attaching an active-caster had been proposed. This caster enables a lighter and more compact motorized wheelchair than conventional motorized wheelchairs. In this paper, a method for detecting absolute angles using two potentiometers is presented. It leads to smaller gears to be installed and compensates for the dead-zone disadvantages of potentiometers. The absolute angle is determined by using the difference between the output values of multiple potentiometers. However, the influence of the backlash must be considered. Therefore, a gear arrangement with a larger dead zone tolerance is determined. Then, the maximum error in absolute angle caused by backlash is determined.