| 摘要 |
<p>PURPOSE:To safely change the direction of a motor car seat, by bringing the difference of the speed of the revolution of both wheels within a fixed range when car speed is not less than a fixed value and direction is repidly changed. CONSTITUTION:RIN and LIN signals are each the control signals of a motor for driving a right wheel or a left wheel of a motor car seat, and are obtained in response to the operation of an operating lever by operators. A signal V being proportional to car speed and a reference speed signal Va are compared by a comparator C, an analog gate G is in ON when the speed exceeds fixed speed and a space between terminals 1, 2 is conducted. When potential difference is formed between potential VR' between a resistance R1 and a buffer amplifier A2 and potential difference between a resistance R2 and a buffer amplifier A4 at that time, the difference does not become larger than the sum of the forward voltage of a diode D1 or D2 and the Zener voltage of Zener diode ZD1 or ZD2, an output signal ROUT or LOUT is limited and the seat cannot rapidly turn.</p> |
