| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent energy loss due to lack of debate on proper application time, shape, or output and discontinuance timing of a lock pulse, as a 16 ms full pulse is uniformly applied in prior art on basis of an idea that a lock pulse having an adequately large pulse is a satisfactory lock pulse. <P>SOLUTION: An impact discriminating circuit 115 discriminates a level of an impact detected by an impact detecting circuit 114, and a lock pulse of which level is suited to the level of the impact is generated. This enables to reduce electric power consumption compared to prior art while maintaining braking force with reliability equal to or higher than in prior art. Further, electric current consumption due to the lock pulse is reduced by shaping the lock pulse in a comb-teeth-shape (chopper changing), which in prior art has a full pulse shape only. <P>COPYRIGHT: (C)2012,JPO&INPIT |
