Electricity: motive power systems – Periodic – repetitious or successive operations control of...
Patent
1999-04-13
2000-08-22
Ro, Bentsu
Electricity: motive power systems
Periodic, repetitious or successive operations control of...
318 41, 318 62, 318DIG2, B60S 108
Patent
active
061077666
ABSTRACT:
There is provided a method for controlling an opposed wiping type wiper apparatus having a pair of wiper blades driven by a pair of motors, respectively. The wiper apparatus includes detecting means for detecting the angular position of the each wiper blade, calculating means for calculating the angular distance of one wiper blade relative to the other wiper blade, memory means for memorizing therein a reference table of target angular distances in advance for the wiper blades, and control means for controlling the pair of wiper blades so that the angular distance of each of the wiper blades is brought close to the corresponding target angular distance.
The wiper apparatus also may control the wiper blade velocity. In this case, the wiper apparatus further includes a reference table of target velocities and the wiper blades are controlled based on the target angular distance and target velocity.
REFERENCES:
patent: 4900995 (1990-02-01), Wainwright
patent: 5252897 (1993-10-01), Porter et al.
patent: 5568026 (1996-10-01), Welch
patent: 5860185 (1999-01-01), Ponziani
Mitsuba Corporation
Ro Bentsu
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