Vehicle Height Adjustment Actuator Control via Current Segmentation
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Solution Overview
Problem
Existing vehicle height adjustment devices for motorcycles face issues with inconsistent height adjustment due to varying load conditions and current supply, leading to failures in maintaining or changing the vehicle height as intended.
Innovation Solution
A vehicle height adjustment device comprising an actuator, detector, and controller that alternately supplies increase and maintenance currents to the actuator based on detected position values, ensuring accurate height adjustment by managing the relative position between the vehicle body and wheel axle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current is supplied to the electromagnetic actuator to adjust vehicle height, then the actuator operates to change the relative position of the body and wheel axle, but the load on the actuator causes the amount of operation to vary, leading to inconsistent height adjustment
Solution Approach 1:
The control unit receives feedback from the detector about the actual relative position and compares it with the target position. Based on this feedback, the control unit adjusts the current supplied to the electromagnetic actuator, switching between increase current and maintenance current to achieve accurate height adjustment despite varying load conditions.
Solution Approach 2:
The system dynamically adjusts the current supply mode based on the detected position. When the detection value is less than the target value, the control unit alternately supplies increase current to move the body upward and maintenance current to hold the position, creating a dynamic control strategy that adapts to the actuator's operating state.
2Reliability
If the control unit supplies current to maintain vehicle height, then the actuator should maintain the relative position, but under varying load conditions the actuator may fail to maintain the intended height
Solution Approach 1:
The detector continuously monitors the actual relative position and feeds this information back to the control unit. The control unit compares the detected position with the target position and adjusts the current supply accordingly, ensuring the body maintains the correct height even when load conditions change.
Solution Approach 2:
The system uses the detector and control unit to automatically monitor and adjust the actuator's operation without external intervention. The control unit self-regulates the current supply based on the detected position, enabling the system to maintain height autonomously under varying loads.
3Manufacturing precision
If the control unit alternately supplies increase current and maintenance current to the actuator, then the relative position can be accurately controlled, but the complexity of the control system increases
Solution Approach 1:
The control unit segments the current supply into two distinct modes: increase current for moving the body upward and maintenance current for holding the position. This segmentation allows precise control of the actuator's operation, enabling accurate height adjustment by switching between these two current modes based on the detected position.
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
The solution ensures precise and reliable vehicle height adjustment, maintaining or increasing/decreasing the height as needed, even under varying load conditions, by effectively controlling the current supply to the actuator.
Implementation Method 1
an actuator, a detector, and a controller. The actuator is driven when supplied with a current and is configured to change a relative position of a body of a vehicle relative to an axle of a wheel of the vehicle
Data Source
AI summary
A vehicle height adjustment device includes an actuator, a detector, and a controller. The actuator is driven when supplied with a current and is configured to change a relative position of a body of a vehicle relative to an axle of a wheel of the vehicle. The detector is configured to detect the relative position. The controller is configured to control the current supplied to the actuator to make the relative position a target value so as to adjust a vehicle height of the body. When a detection value of the detector is smaller than the target value of the relative position, the controller is configured to alternately supply an increase current and a maintenance current to the actuator. The increase current increases the relative position to increase the vehicle height. The maintenance current maintains the relative position to maintain the vehicle height.