Window Closing Initialization With Entrapment Reversing Control
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Solution Overview
Problem
During the initialization of an opening-closing member controller for a vehicle, the entrapment prevention functionality is disabled when a foreign object is detected for the first time, and the fully closed position is incorrectly stored due to the initial state of components like weather strips, which have not been bent yet, leading to inaccurate positioning.
Innovation Solution
The controller executes entrapment reversing control multiple times during initialization to detect and adjust for entrapment, allowing the storage of the fully closed position after adjustments, ensuring accurate positioning by enabling entrapment prevention functionality and setting the dead zone based on detected entrapment positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the initialization process moves the window glass from middle position to fully open and then to fully closed position to store position information, then the controller can store fully open and fully closed position information, but the entrapment prevention functionality is disabled during this process
Solution Approach 1:
The patent applies preliminary action by performing multiple entrapment reversing control operations during initialization before finalizing the fully closed position storage. The control unit executes entrapment reversing control one or more times when entrapment is detected during the closing action, which adjusts components like weather strips before the final position is stored. This preliminary adjustment ensures that the entrapment prevention functionality remains effective while the fully closed position is being determined.
2Manufacturing precision
If the window glass is closed for the first time during initialization, then the fully closed position can be stored, but the weather strip in initial state may lock the window glass before the intended fully closed position
Solution Approach 1:
The control unit performs entrapment reversing control one or more times during the closing action to preliminarily adjust the weather strip and other components before the window glass reaches the final fully closed position. This preliminary action prevents the weather strip from locking the window glass prematurely, ensuring accurate positioning.
Solution Approach 2:
The control unit detects entrapment during the closing action and executes entrapment reversing control based on this feedback. By monitoring whether entrapment occurs during the initialization process and responding with reversing control, the system iteratively adjusts the closing process to account for the initial state of components, thereby achieving accurate fully closed position storage.
3Reliability
If entrapment reversing control is executed one or more times during initialization, then adjustments can be made to components like weather strip, but the initialization process takes longer
Solution Approach 1:
The control unit executes entrapment reversing control one or more times during initialization, which may be more than the single operation used in normal operation. This excessive action during initialization ensures that components like weather strips are adequately adjusted and that the fully closed position is accurately determined, accepting the additional time as necessary for proper system setup.
Data Source
AI summary
An opening-closing member controller includes a control unit that executes an initialization process to store at least a fully closed position of an opening-closing member. In the initialization process, the control unit closes the opening-closing member, executes entrapment reversing control one or more times when entrapment is detected to open the opening-closing member, and closes the opening-closing member after the entrapment reversing control to store a position where the opening-closing member locks as the fully closed position.