Vehicle Pedal Control by Road-Course Power Constraint
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Solution Overview
Problem
Existing driver models for vehicle control lead to abrupt acceleration and high fuel consumption and pollutant emissions due to their reliance on PI controllers for determining pedal values based solely on speed differences.
Innovation Solution
A method that determines a required power for a vehicle's drive system based on a predefined road course, assigning a permissible pedal position to limit power generation and avoid unnecessary acceleration bursts, using a vehicle module to calculate the necessary power for maintaining specified speeds and accelerations, and transmitting this position to control the vehicle's pedals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a PI controller is used to determine pedal values based solely on speed differences, then the control system is simple to implement, but the vehicle exhibits abrupt acceleration and high fuel consumption
Solution Approach 1:
The patent applies dynamics by making the pedal position determination adaptive to current driving conditions. The system dynamically adjusts the required pedal position based on real-time factors including vehicle speed, acceleration, engine load, and road gradient, rather than using a static PI controller. This dynamic adaptation allows the system to optimize fuel consumption by selecting appropriate pedal positions that match actual driving demands, avoiding unnecessary acceleration and energy waste.
2Device complexity
If a PI controller is used to determine pedal values based solely on speed differences, then the control logic is simple, but pollutant emissions increase due to sharp acceleration
Solution Approach 1:
The system dynamically determines the required pedal position by evaluating multiple current driving conditions including vehicle speed, acceleration, engine load, and road gradient. This dynamic approach replaces the simple but harmful PI controller logic with an adaptive control strategy that optimizes acceleration profiles to reduce pollutant emissions while maintaining necessary vehicle performance.
3Power
If the drive system generates full available power, then the vehicle can achieve maximum acceleration, but unnecessary power bursts occur during gear changes
Solution Approach 1:
The system performs preliminary determination of the required pedal position by evaluating current driving conditions before actuating the drive system. By calculating the necessary pedal position based on factors such as vehicle speed, acceleration demands, and road gradient in advance, the system avoids unnecessary full-power bursts during gear changes and other transitions, thereby reducing energy waste while maintaining required performance.
Data Source
AI summary
The present invention relates to a method for operating a driver model for controlling a vehicle. The driver model comprises a vehicle module (203) which determines an accelerator pedal position to be set on the vehicle. In addition, the vehicle module (203) determines a required power as a component of a total power, which total power can be generated by a drive system of the vehicle, wherein the required power corresponds to a power that is necessary for moving the vehicle at a required speed and/or a required acceleration (311) along a predefined road course. The method according to the invention further provides for a value (313) of a permissible pedal position to be assigned to the required power and for the value (313) of the permissible pedal position to be transmitted to the driver model in order to control the vehicle.