| 摘要 |
PURPOSE:To enable a simple prevension of errors between sections by measuring the rotation of a rotor from a measured value obtained when the number of pulse signals is measured at the front and rear edges thereof as outputted in proportion to the revolutions of the reversible rotor. CONSTITUTION:A disc 3 and a gear 4 are linked to an output shaft 2 of a reversible rotor connected to a motor 1. The gear 4 is provided securely on a seat 5 of an automobile and turns on a rack rail 6 so that the seat 5 varies in the moment in the directions of the arrows 7 and 8 according to the rotation of the output shaft 2. A plurality of magnetic poles 9 are provided on a disc 3, on the outside of which 3 a lead switch 10 is fixed and conducts with the passage of the disc 3 through the magnetic pole 9. One end of a lead switch 10 is grounded and the other end thereof is connected to a processor 12 while pulled up through a resistor 11. A pulse signal is applied to the processor 12 in proportion to the revolutions of the output shaft 2. The processor 12 counts the number of the pulse signal at the front and rear ends and stores the value thereof into a memory 13. |
