Vehicle Speed Targeting for Accurate Energy Use Estimation
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Solution Overview
Problem
Existing systems fail to accurately estimate energy resource consumption characteristics in vehicles, particularly in varying travel conditions such as following a preceding vehicle, turning, and non-following travel modes, which affects the accuracy of cruising range estimation and energy management.
Innovation Solution
A processing apparatus equipped with processors and memory, utilizing sensors to detect vehicle speed, surrounding environment, and yaw rate, sets target speeds based on travel conditions to identify energy resource consumption characteristics, including deviations from ideal speeds due to driver behavior and environmental factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed target vehicle speed is set regardless of travel conditions, then the control system is simple, but the energy resource consumption estimation accuracy deteriorates
Solution Approach 1:
The target vehicle speed is dynamically adjusted based on detected travel conditions (following-travel mode, turning, non-following-travel mode) rather than being fixed. The processor modifies the target speed according to the specific travel condition to optimize energy consumption estimation accuracy for each scenario.
Solution Approach 2:
The system changes the target vehicle speed parameter according to different travel conditions. When following-travel mode is detected, the target speed is set based on preceding vehicle speed; when turning, it's adjusted based on radius of curvature; when non-following, it's set to legally permitted speed.
2Measurement precision
If the target vehicle speed is adjusted based on multiple travel conditions, then the energy resource consumption estimation accuracy improves, but the device complexity increases
Solution Approach 1:
The travel conditions are segmented into distinct modes (following-travel mode, turning, non-following-travel mode), each with its own target speed setting rule. This segmentation allows the system to apply appropriate speed adjustments for each specific condition without requiring a single complex algorithm.
Solution Approach 2:
The system uses feedback from the surrounding-environment sensor to detect the current travel condition and adjusts the target vehicle speed accordingly. This closed-loop approach ensures the target speed always reflects the actual travel conditions, improving consumption estimation accuracy.
3Measurement precision
If the target vehicle speed is set based on preceding vehicle speed in following-travel mode, then the energy resource consumption estimation improves, but the system complexity increases
Solution Approach 1:
The surrounding-environment sensor acts as an intermediary that detects whether a preceding vehicle is present and determines the following-travel mode. This sensor mediates between the complex condition of detecting preceding vehicle behavior and the control system's need for simple mode classification.
Data Source
AI summary
A processing apparatus includes one or more processors and one or more memories coupled to the one or more processors. The one or more processors are configured to, in a following-travel mode in which a driver who drives a vehicle follows a preceding vehicle, execute a process including: setting a target vehicle speed depending on a traveling environment for the vehicle to a vehicle speed depending on a vehicle speed of the preceding vehicle; and identifying consumption characteristics of an energy resource of the vehicle based on an amount of deviation of an actual vehicle speed of the vehicle from the target vehicle speed.