| 摘要 |
PURPOSE:To prevent unnecessary pump driving by forcibly applying low speed signal in an angular speed sensing device for steering used in control of a power steering when the steering wheel is operated at a high speed and suddenly it it stopped. CONSTITUTION:Because pulse A generated in a pulse generator 1 and synchronized with steering by a steering 9 passes through monostable multi-vibrators 2 and 3, and resets periodically a counter 5 by the pulse C, a counted value D of the pulse from a clock source 4 indicates the cycle of the pulse A. The counted value D outputs the pump driving signal H during high speed steering through a memory circuit 6, D/A converter 7, and a comparator 8. When steering is suddenly stopped after high speed stering, and the counted value exceeds a specified value, the clock is stopped by the signal of a nand gate 15 and the output I of a monstable multi-vibrator 17 resets the content in the memory forcibly, and stops the pump, which prevents unnecessary use of energy. |
