Vehicle Seat Folding Control for Synchronized Motor Speeds
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Solution Overview
Problem
Vehicle seat folding systems often result in uneven folding speeds due to motor and gear variability, leading to inconsistent folding completion times, which can cause emotional distress for users.
Innovation Solution
A folding control apparatus and method that uses sensors to detect the rotational speed and position of each motor, adjusting the duty ratio of driving signals to synchronize the folding speeds of multiple vehicle seats, ensuring equal completion times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If identical motors and driving signals are used for multiple vehicle seats, then manufacturing cost and system simplicity are reduced, but folding speed consistency deteriorates due to motor variability and voltage drop
Solution Approach 1:
The patent applies feedback control by detecting the rotational speed of each motor and adjusting the duty ratio of driving signals accordingly. Sensors monitor the actual folding speed of each seat, and the control module modifies the driving signal duty ratio in real-time to compensate for differences in motor performance and voltage drop, ensuring consistent folding speeds across multiple seats while maintaining the use of identical motors
Solution Approach 2:
The patent changes the duty ratio parameter of the driving signals based on detected rotational speeds. By dynamically adjusting this electrical parameter, the system compensates for motor variability and voltage drop effects, achieving consistent folding speeds without changing the motor hardware or adding complex mechanical components
2Manufacturing precision
If duty ratio control is applied to synchronize folding speeds, then folding speed consistency is improved, but control system complexity increases
Solution Approach 1:
The control module implements feedback control by continuously monitoring rotational speed sensors and adjusting duty ratios accordingly. This closed-loop system automatically compensates for speed variations without requiring complex manual intervention or sophisticated control algorithms, maintaining relative simplicity while achieving precise speed synchronization
Solution Approach 2:
The system performs self-adjustment by automatically detecting speed differences and correcting them through duty ratio modulation. The control module autonomously manages the synchronization process without external intervention, reducing the need for additional control components or complex coordination mechanisms
Data Source
AI summary
The present disclosure relates to a folding control apparatus and method for vehicle seats capable of controlling folding or unfolding of a first vehicle seat and a second vehicle seat.