Vehicle Aerodynamic Downforce Diagnosis via Force Sensor Feedback
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Solution Overview
Problem
Current vehicle aerodynamic systems lack accurate methods for diagnosing and verifying downforce estimation, which affects vehicle performance and handling, especially under racetrack conditions.
Innovation Solution
A method involving a controller that determines expected and measured downforce on aerodynamic elements using sensors, calculates deviations, and adjusts the aerodynamic elements' position to control downforce, enhancing vehicle performance by improving handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional aerodynamic systems are used without force sensors, then device complexity is reduced, but measurement precision of downforce is insufficient
Solution Approach 1:
A force sensor is introduced as an intermediary measurement device between the aerodynamic element and the vehicle body. The force sensor directly measures the downforce acting on the aerodynamic element, providing precise measurement data without requiring complex computational models or multiple sensors. This intermediary approach resolves the contradiction by enabling accurate downforce measurement while keeping the overall system structure relatively simple.
2Reliability
If downforce estimation is performed without direct measurement, then device complexity is reduced, but reliability of aerodynamic data is insufficient
Solution Approach 1:
The system implements a feedback mechanism where the measured downforce from the force sensor is compared with the expected downforce calculated from aerodynamic element position and vehicle operating conditions. This feedback loop enables continuous verification and diagnosis of the aerodynamic system, ensuring data reliability by detecting discrepancies between expected and actual downforce values, thereby resolving the contradiction between reliability and system complexity.
3Productivity
If aerodynamic elements are not actively controlled based on deviation, then ease of operation is maintained, but vehicle performance under racetrack conditions deteriorates
Solution Approach 1:
The aerodynamic element position is made dynamically adjustable based on real-time deviation measurements. The system automatically modifies the aerodynamic element position in response to discrepancies between expected and measured downforce, enabling adaptive optimization of vehicle performance under varying racetrack conditions. This dynamic control approach resolves the contradiction by improving performance through automated adaptation while maintaining ease of operation through system autonomy.
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
This method increases confidence in aerodynamic conditions, allowing other vehicle controllers to utilize downforce information effectively, leading to improved vehicle handling and performance.
Implementation Method 1
determining, via the controller, a measured downforce acting on the aerodynamic element based, at least in part, on a signal received from at least one force sensor
Data Source
AI summary
A method can be executed to diagnose an aerodynamic system of a vehicle and includes the following steps: (a) determining, via a controller, an expected downforce acting on an aerodynamic element of a vehicle based, at least in part, on a position of the aerodynamic element relative to a vehicle body of the vehicle; (b) determining, via the controller, a measured downforce based, at least in part, on a signal received from at least one force sensor; (c) determining a deviation, via the controller, based, at least in part, on the expected downforce and the measured aerodynamic force; and (d) controlling, via the controller, the aerodynamic element based, at least in part, on the deviation.