Vehicle Door Actuator Control Using Acceleration for Natural Operation
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Solution Overview
Problem
Existing door opening and closing assisting apparatuses face challenges in achieving favorable operability while maintaining a simple apparatus configuration, as they rely on limited parameters for control logic.
Innovation Solution
The apparatus includes an information obtainer to measure door acceleration, a door actuator for assistance, and a controller that computes and applies target assisting power based on door acceleration, starting driving control at the right timing to enhance operability, and adjusts power based on vehicle attitude and openness degree.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the controller starts driving control at a delayed timing based on velocity detection, then the control logic is simple with few parameters, but the door operability becomes unnatural and unfavorable
Solution Approach 1:
The controller starts driving control at the timing when acceleration is detected, which is earlier than when velocity would be detected. This preliminary action allows the motor to begin assisting before the door reaches significant velocity, making the assistance more natural and favorable to the operator while keeping the detection mechanism simple.
2Adaptability or versatility
If the driving control starts based on opening/closing velocity, then the apparatus configuration remains simple, but the assistance timing does not match the operator's intent
Solution Approach 1:
The patent changes the detection parameter from velocity to acceleration. By detecting acceleration instead of velocity, the system can identify the operator's intent earlier in the door operation process, providing more adaptable and responsive assistance while maintaining a simple detection system.
Data Source
AI summary
A door opening and closing assisting apparatus that assists an opening and closing operation of a door on a vehicle is provided. The door opening and closing assisting apparatus includes: an information obtainer that obtains information on an opening and closing acceleration of the door; a door actuator that performs driving for assisting the opening and closing operation of the door; a target assisting power computer that computes a target assisting power for assisting the opening and closing operation of the door; and a controller that performs driving control for the door actuator based on the target assisting power. The controller starts the driving control for the door actuator at a timing at which the information obtainer obtains the opening and closing acceleration of the door.