Motor Vehicle Lock Pulling Shut Device Adaptive Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motor vehicle lock systems face challenges in adapting to individual requirements and detecting deviations in control variables, leading to inefficient and unreliable closing processes.
Innovation Solution
A motor vehicle lock system with a locking mechanism featuring a rotary latch and pawl, an electric drive, and a control unit that uses self-calibration to determine an intermediate switching time for full-force operation, detecting current peaks to prevent trapping and adjust the closing process based on measured variables, allowing for precise control and anti-trap protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the closing device operates with constant force throughout the closing process, then the structure is simple, but it cannot adapt to individual requirements and detect deviations in control variables
Solution Approach 1:
The closing device transitions from static constant-force operation to dynamic adaptive control. The control unit continuously adjusts the closing force based on real-time current measurements and compares it against stored reference curves, enabling the system to adapt to individual vehicle requirements and detect deviations automatically.
Solution Approach 2:
The system implements feedback control by measuring the actual current consumed by the electric drive during closing, comparing it with stored reference curves representing proper closing behavior, and adjusting the closing process accordingly. This feedback mechanism enables detection of deviations and automatic adaptation to individual requirements.
2Reliability
If the closing process is controlled with simple constant force, then the device is easy to operate, but pinching and trapping cannot be prevented
Solution Approach 1:
The control unit continuously monitors the current consumed by the electric drive during closing and compares it against stored reference curves that represent proper closing behavior. When deviations are detected indicating potential pinching or trapping, the system can interrupt or reverse the closing process, providing reliable anti-trap protection.
Solution Approach 2:
The system performs preliminary detection during the closing process by continuously monitoring current characteristics against reference curves. This early detection of abnormal current patterns enables preventive action before actual pinching or trapping occurs, allowing the closing process to be interrupted or reversed in time to prevent harm.
3Productivity
If the closing device uses fixed control parameters, then the manufacturing is simple, but it cannot be optimized for individual vehicles throughout service life
Solution Approach 1:
The control unit performs preliminary self-calibration during manufacturing by executing closing processes and storing the resulting current characteristics as reference curves. This preliminary action captures the optimal closing parameters for the specific vehicle, enabling the system to be optimized for individual vehicles without complex manual adjustment procedures.
Solution Approach 2:
The system performs self-calibration automatically during manufacturing by executing closing processes and storing the resulting current characteristics as reference curves. This self-service capability eliminates the need for complex manual adjustment procedures while enabling optimization for individual vehicles, as the system automatically adapts to the specific vehicle's characteristics.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables reliable and adaptive control of the closing process, preventing pinching and ensuring safe operation by detecting deviations in current pulses, allowing for continuous optimization and anti-pinch protection throughout the vehicle's service life.
Implementation Method 1
current peaks in the commutator transition of an electric motor of the drive can be detected
Data Source
Figure 1~3
AI summary
The invention relates to a lock (1) for a motor vehicle, said lock comprising: a locking mechanism (2) consisting of a rotary latch (3) and at least one pawl (4); a pulling shut device (9) having an electric drive (17), wherein the locking mechanism (2) can be transferred from a pre-locking position (VR) into a main locking position (HR) by means of the pulling shut device (9); and a control unit (S) for the pulling shut device (9), wherein a pulling shut operation can be controlled depending on a measurement value associated with the electric drive (17), and the pulling shut operation being controllable by means of a number of electric pulses (24, 25, 26) generated during the pulling shut operation.