Patent ID: 7784335
Filing Date: 2010-08-31
Classification: B60T,G01L

Abstract:
1. A brake system test device of a two-wheeled motor vehicle for testing the operation of an antilock brake system provided on the two-wheeled motor vehicle, the device comprising: a pair of rotatable supporting rollers having axes arranged in parallel for supporting a front wheel of the two-wheeled motor vehicle; a pair of rotatable supporting rollers having axes arranged in parallel for supporting a rear wheel of the two-wheeled motor vehicle; a measuring means for measuring, when the antilock brake system operates for at least one of the two wheels of the two-wheeled motor vehicle, the rotation speed of said wheel via the supporting roller supporting said wheel; a computing means for computing, based on a value obtained by the measuring means, a waveform accompanying a change in the rotation speed of the wheel generated by the operation of the antilock brake system, the waveform having peak values and transition portions which fall before and after the peak values; and a determination means for determining that the brake system is OK when the peak values of the waveform obtained via the computing means falls within predetermined ranges during predetermined lapse times, and determining that the brake system is OK even if at least one of the peak values could not be extracted from the waveform obtained via the computing means when a transition portion of the waveform falls within a predetermined range during a predetermined lapse time without exceeding an upper limit and falling below a lower limit of the predetermined range during a predetermined lapse time, and determining that the brake system is NG even if at least one of the peak value could not be extracted from the waveform obtained via the computing means when a transition portion of the waveform falls within a predetermined range during a predetermined lapse time and also another transition portion exceeds an upper limit or falls below a lower limit of the predetermined range during a predetermined lapse time.