Vehicle Door Control Device Speed Adjustment
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Solution Overview
Problem
Existing vehicle opening/closing body control devices face challenges in accurately reflecting user intent due to changing manipulation force requirements with age and increased manufacturing costs from speed detection configurations, particularly in systems with lock mechanisms.
Innovation Solution
A vehicle opening/closing body control device with a drive section and controller that detects external force inputs to adjust operation speed, allowing intuitive manipulation to achieve desired opening/closing speeds through switching between normal and high-speed operation modes based on acceleration detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manipulation speed detection configuration is used to control opening/closing body speed, then user convenience is improved, but manufacturing costs increase
Solution Approach 1:
The system uses the motor's own drive signals and position feedback to calculate speed and detect manipulation intent, eliminating the need for separate manipulation speed sensors. The motor control unit processes existing data to determine operation speed and respond to user manipulation, making the system self-sufficient without additional detection hardware.
Solution Approach 2:
The patent replaces mechanical manipulation speed detection mechanisms with an electronic control system that calculates speed from motor drive signals and position sensor data. This substitution eliminates the need for complex mechanical speed sensors while achieving the same control function through electronic processing.
2Reliability
If lock mechanism is used to restrain opening/closing body at fully closed/opened positions, then operational reliability is improved, but manipulation force requirement increases making speed control difficult
Solution Approach 1:
The system dynamically adjusts motor output torque based on real-time manipulation force detection and operation phase. During lock release phases, the motor provides enhanced torque assistance to overcome the lock mechanism's restraining force. The control unit continuously adapts drive parameters to match user manipulation intensity, making the system responsive despite the lock mechanism's force requirements.
Solution Approach 2:
The system incorporates feedback from manipulation force sensors and motor current measurements to continuously adjust drive output. The control unit processes feedback signals to detect user manipulation strength and automatically scales motor torque accordingly, ensuring reliable operation even when high manipulation forces are required to overcome the lock mechanism.
Data Source
AI summary
An opening/closing body control device for a vehicle is provided with a drive section configured to drive an opening/closing body of a vehicle, and a controller configured to control the drive section. In response to detection of an external force input intended to accelerate the opening/closing body in operation, the controller controls the drive section to increase the operating speed of the opening/closing element. The drive section determines that the external force intended to accelerate the opening/closing body has been input if, as one example, the acceleration of the opening/closing body in an operation direction reaches a predetermined value or higher.