| 摘要 |
PURPOSE:To enable the discrimination of a bad road by detecting the lateral acceleration acted upon a car body as well as the frequency of the detected acceleration valve exceeding the specified band width. CONSTITUTION:A lateral acceleration sensor 2 detects the lateral acceleration acted upon a car body and inputs it to the input circuit 1a of a controller 1 as an electric signal. The input circuit 1a removes the noise of the same electric signal, converts its level and inputs it into an arithmetic circuit 1b. The arithmetic circuit 1b disposes of the signal according to a flow chart as well as performs the comparative disposal with the data in a control condition setting circuit 1c by its timer and counter function, discriminates a bad road in case of exceeding the specified band width by the specified frequency within the specified time, outputs the signal to driving circuits 1d, 1e and ultimately drives the motor 16 of the hydraulic pressure buffer 3 of a wheel so as to perform buffer action. A device for detecting a bad road accurately can be thus obtained. |
