发明名称 |
Wiper control apparatus and method capable of variably adjusting wiper blade motion |
摘要 |
A wiper blade (1) wipes over a predetermined range of a front windshield in response to rotation of a wiper motor (5) in a forward and reverse directions. The wiper blade operates in a wiping range between a predetermined upper reversing position and a predetermined lower reversing position. An upper pre-reversing position is defined in advance of the upper reversing position, and a lower pre-reversing position is defined in advance of the lower reversing position. A rotation sensor (17) produces pulse signals in response to the rotation of the wiper motor. A CPU (21) counts the pulse signals produced from the rotation sensor when a position detection sensor (18) detects an arrival of the wiper blade at the pre-reversing position. The CPU produces a control signal to a drive circuit (26) and reverses the direction of the drive current of the wiper motor to reverse the rotation of the wiper motor, when the pulse count value reaches a predetermined value. <IMAGE> |
申请公布号 |
EP1034991(A2) |
申请公布日期 |
2000.09.13 |
申请号 |
EP19990122163 |
申请日期 |
1999.11.05 |
申请人 |
ASMO CO., LTD. |
发明人 |
MIYAZAKI, NAOMI;NAKATA, MASASHI;UCHIDA, YASUAKI;OSHIRO, AKIO |
分类号 |
B60S1/08;H02P1/22;H02P3/08;H02P29/00 |
主分类号 |
B60S1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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