Vehicle HUD Actuator Drive Control for Durability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The durability of actuator systems in head-up display devices is compromised due to lack of specialized drive control mechanisms, affecting their performance in adjusting display positions based on vehicle speed and conditions.
Innovation Solution
A display device with a light projecting system, optical mechanism, and actuator controlled by a device that adjusts the projection position and angle based on vehicle speed, with increased responsiveness during specific driving conditions to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If drive control of actuator is not specially devised, then the display position can be adjusted according to vehicle speed, but the durability of the actuator is lowered
Solution Approach 1:
The patent implements dynamic drive control where the actuator's responsiveness is adjusted based on vehicle behavior. The control device changes the responsiveness according to vehicle speed and acceleration patterns, making the actuator more compliant during high-dynamic conditions and more responsive during stable conditions, thereby improving durability while maintaining adaptability
Solution Approach 2:
The control device modifies the drive control parameters dynamically based on vehicle state. By changing responsiveness parameters according to vehicle speed and acceleration, the system optimizes the actuator's operational characteristics for different driving conditions, reducing mechanical stress and improving durability
2Speed
If the actuator responsiveness is increased for all conditions, then the display position adjusts quickly, but the mechanical stress on the actuator increases reducing durability
Solution Approach 1:
The patent applies different responsiveness characteristics to different driving conditions. Instead of uniform high responsiveness, the system provides locally optimized responsiveness - high responsiveness when vehicle conditions allow, and reduced responsiveness when mechanical stress would be excessive, thereby balancing speed and durability
3Reliability
If the actuator responsiveness is decreased to protect durability, then mechanical stress is reduced, but the display position adjustment becomes slow
Solution Approach 1:
The system dynamically adjusts responsiveness based on real-time vehicle conditions. During stable driving conditions, higher responsiveness is permitted for faster adjustment. During high-dynamic conditions with rapid vehicle movements, responsiveness is reduced to protect the actuator, optimizing both speed and durability across different operating states
Data Source
AI summary
A display device mounted in a vehicle includes a light projecting device configured to project light including an image, an optical mechanism provided on a path of the light, an actuator configured to drive the optical mechanism to adjust a distance from a predetermined position to a position where the light is formed as a virtual image, and a control device configured to control the light projecting device and the actuator, wherein the control device is configured to drive the actuator on the basis of a speed of the vehicle to adjust a projection position on a projection surface of the light projected from the light projecting device.