Active Suspension Demonstration Mode via Timer and Vehicle State Logic
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Solution Overview
Problem
Active suspension systems in vehicles are difficult to demonstrate to customers, as their operational effects are not visibly apparent, necessitating a mode to illustrate their functionality.
Innovation Solution
Implementing a demonstration mode for the active suspension system, which can be activated via a switch and includes a timer, allowing the system to revert to normal operation after a predetermined time, and considering vehicle gear, engine status, and throttle angle to determine when to switch back.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a demonstration mode is added to illustrate active suspension functionality, then customer understanding is improved, but system complexity increases
Solution Approach 1:
The system dynamically switches between normal operating mode and demonstration mode based on timer conditions and vehicle operating states. The suspension system's damping characteristics are dynamically adjusted to provide visible body roll during demonstration while maintaining normal operation otherwise, making the normally invisible active suspension effects observable without permanent system modification.
Solution Approach 2:
The system changes the damping parameters of the suspension system when entering demonstration mode, allowing the vehicle body to exhibit visible roll characteristics that demonstrate the suspension's capabilities. After the timer expires or certain conditions are met, the parameters return to normal operating values, resolving the contradiction by temporarily modifying system behavior only when needed for demonstration.
2Illumination intensity
If the demonstration mode is activated to show suspension effects, then visibility of system effects is improved, but operational safety may worsen
Solution Approach 1:
The system dynamically monitors vehicle operating conditions including gear selection and throttle position, and only allows demonstration mode when the vehicle is stationary or in safe conditions. The system automatically disables demonstration mode when the vehicle enters drive, reverse, or neutral gear, or when throttle angle exceeds a predetermined threshold, ensuring safety while maintaining visibility of effects when appropriate.
Solution Approach 2:
The system continuously monitors vehicle state through sensors detecting gear position, throttle angle, and timer status, providing feedback to the control system. This feedback mechanism ensures that demonstration mode is only active when safe, and automatically transitions to normal operation when vehicle conditions change, resolving the safety concern while maintaining demonstration capability.
3Ease of operation
If the system automatically reverts to normal mode after timer expiration, then ease of operation is improved, but loss of time for demonstration may worsen
Solution Approach 1:
The system pre-sets a timer when demonstration mode is activated, automatically managing the transition back to normal operation after a predetermined period. This preliminary timing action eliminates the need for manual intervention to exit demonstration mode, improving ease of operation while ensuring the demonstration lasts long enough to be effective. The timer is set in advance to provide adequate demonstration time before automatic reversion.
Data Source
AI summary
System and method for operating an active suspension system of a vehicle includes actuating a switch on the vehicle, setting the active suspension system for the vehicle to a demonstration mode, setting a timer when the active suspension system is set to the demonstration mode, and setting the active suspension system for the vehicle to a normal operating mode after the timer reaches a predetermined time. Prior to expiration of the timer, the system and method determines a gear in which the vehicle is placed, determines whether an engine of the vehicle is running if the transmission gear of the vehicle is drive, reverse, or neutral, and determines a throttle angle of the vehicle if the engine is running. The active suspension system is set to a normal operating mode if the throttle angle is greater than a predetermined angle. An iterative process determines the status of the timer.