Wiper device and method for controlling same

Patent metadata

Field	Value
Publication number	US-10207681-B2
Application number	US-201314758556-A
Country	US
Kind code	B2
Filing date	Dec 10, 2013
Priority date	Dec 28, 2012
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

The invention relates to a method for controlling a wiper device ( 10 ) by means of a control and/or regulating unit ( 12 ). At least one operating parameter is set dependent on at least one parameter which differs from a vehicle window coverage parameter.

First claim

The invention claimed is:

1. A method for controlling a wiper device ( 10 ), the method comprising:
providing a control unit ( 12 ),
using the control unit to set at least one operating parameter depending on at least one parameter that is different from a vehicle windscreen coverage parameter, wherein the at least one operating parameter that is set comprises at least one maximum torque provided from a torque profile; and a wiping angle limit that controls a quantity of washing water during application of the washing water, and the at least one maximum torque is set depending on a wiper position angle ( 38 ) and the parameter of at least one external temperature,
using the control unit to protect the wiper device ( 10 ) against overloading in an event of a torque ( 46 ) of the wiper device ( 10 ) exceeding the at least one maximum torque by either returning a wiper arm of the wiper device to an initial position or retaining the wiper arm in a current position for a defined time, and
activating or deactivating the application of the washing water when a wiper blade of the wiper arm exceeds or falls below said wiping angle limit.

2. The method as claimed in claim 1 , characterized in that a winter program is activated in the event of the at least one external temperature falling below a first temperature limit.

3. The method as claimed in claim 1 , characterized in that the at least one wiping angle limit ( 36 ) is set depending on whether a winter program or a summer program is activated, and wherein the maximum torque has a lower value in the winter program than in a summer program.

4. The method as claimed in claim 1 , characterized in that the at least one maximum torque is set depending on at least one item of date information.

5. The method as claimed in claim 1 , characterized in that the at least one operating parameter further comprises a washing water pressure, wherein the washing water pressure is varied depending on the wiper blade exceeding or falling below the wiping angle limit.

6. The method as claimed in claim 1 , further comprising controlling the quantity of washing water depending on at least one ambient brightness.

7. The method as claimed in claim 1 , wherein the quantity of washing water depends on a vehicle open condition.

8. The method as claimed in claim 2 , characterized in that the first temperature limit has a value no greater than 4° C.

9. The method as claimed in claim 2 , characterized in that a transition program is activated in the event of the at least one external temperature falling below a second temperature limit.

10. The method as claimed in claim 2 , characterized in that a summer program is activated in the event of the at least one external temperature exceeding a second temperature limit.

11. The method as claimed in claim 9 , characterized in that the second temperature limit has a value between 6° C. and 14° C.

Assignees

• Bosch Gmbh Robert

Inventors

• Ernst Waldemar
• Kraemer Godelieve

Classifications

• B60S1/485

  including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like · CPC title

• H01H51/30

  specially adapted for actuation by AC · CPC title

• H02P23/12

  Observer control, e.g. using Luenberger observers or Kalman filters · CPC title

• G05B5/00

  Anti-hunting arrangements · CPC title

• B60S1/0866

  including a temperature sensor (heating devices for windshield B60H) · CPC title