| 摘要 |
<p>PURPOSE:To simplify a constitution for a speed command by detecting an amount of a revolved angle of a revolving shaft by a magneto-resistance element to obtain a speed command signal. CONSTITUTION:A U-shaped yoke 14 is attached to a revolution operating shaft 11. Permanent magnets 15a, 15b are attached to a pair of legs 14a, 14b of the yoke 14, and a magnetic field H passing on the axial line of of the shaft 11 is formed. A magneto-resistance element 16 detects this field H and outputs the speed command signal in accordance with plus and minus revolved amounts from the neutral position of the shaft 11.</p> |
