Seat Slide Rail Multi-Motor Synchronization Using Position Feedback
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Solution Overview
Problem
Conventional multi-motor synchronous control methods fail to completely eliminate position deviation during operation, affecting the stability and performance of systems relying on multiple motors.
Innovation Solution
A multi-motor control method that adjusts the operating speeds of multiple motors based on real-time position information to achieve synchronization, utilizing a controller system with CAN and LIN buses for communication and Hall sensors for precise motion state detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If speed detection method is used for multi-motor synchronous control, then the control system is simple to implement, but position deviation cannot be completely eliminated
Solution Approach 1:
The patent implements a feedback mechanism where the controller continuously detects position information from multiple motors and adjusts their operating speeds based on the detected position differences. This closed-loop feedback system ensures that position deviation is actively corrected during operation, resolving the contradiction between simple implementation and high precision by maintaining synchronization accuracy through real-time adjustments rather than relying solely on initial precise setup.
2Device complexity
If traditional multi-motor synchronous control is used, then the system structure is simple, but synchronization accuracy is insufficient
Solution Approach 1:
The controller detects position information from each motor in real-time and uses this feedback to dynamically adjust operating speeds, ensuring high synchronization accuracy without requiring complex mechanical synchronization structures.
Solution Approach 2:
The system dynamically changes the operating speed parameter of individual motors based on their detected position information. By adjusting speed as a variable parameter rather than maintaining fixed speed relationships, the system achieves high synchronization accuracy while keeping the overall structure relatively simple.
3Manufacturing precision
If position-based speed adjustment is implemented, then synchronization accuracy is improved, but control complexity increases
Solution Approach 1:
The controller automatically detects position information and adjusts speeds based on pre-established control logic, reducing the need for complex manual intervention while maintaining high synchronization accuracy.
Solution Approach 2:
The system performs self-adjustment by automatically detecting position deviations and correcting speed differences without requiring external intervention. This self-service capability simplifies the overall control process despite the increased sophistication of the control algorithm.
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
Improves synchronization accuracy and stability of multi-motor systems, reducing space requirements and enhancing flexibility in vehicle layouts by eliminating large motor brackets and increasing available space.
Implementation Method 1
Hall sensors for precise motion state detection
Data Source
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AI summary
The present disclosure provides a multi-motor control method and system. The multi-motor control method includes: activating multiple motors based on a received request, where the multiple motors include a first motor and a second motor, and the first motor and the second motor are configured to drive a first slide rail assembly and a second slide rail assembly in a seat slide rail assembly, respectively; obtaining, in real time, first position information of the first motor and second position information of the second motor; and adjusting, based on the first position information and the second position information, a first operating speed of the first motor and/or a second operating speed of the second motor until the first motor and the second motor are synchronized. In the present disclosure, operating speeds of the motors are adjusted by obtaining real-time position information of the first motor and the second motor, thereby achieving independent and synchronous operation of the multiple motors.