EV Manual Shift Simulation Control for Driver Fatigue Adaptation
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Solution Overview
Problem
Existing technologies for electric vehicles simulating manual transmission operations do not adequately address the increased driver load and safety concerns associated with clutch and shifting operations, leading to potential fatigue and unsafe driving conditions.
Innovation Solution
A travel mode controller that includes a processor and memory system to estimate driver fatigue based on clutch and shifting operations, adjusting motor torque and pedal reaction forces to reduce driver load and enhance safety by simulating manual transmission functions in an electric vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual transmission simulation operations (clutch and shifting) are validated in electric vehicles, then driver engagement and driving experience are improved, but driver fatigue and safety risks increase
Solution Approach 1:
The controller continuously monitors clutch operation status and shifting operation status, using this feedback to dynamically adjust motor torque output. When clutch engagement is detected, the controller reduces motor torque to simulate engine load characteristics. When shifting operations are detected, the controller adjusts torque to match the gear transition characteristics of manual transmissions, thereby maintaining driving experience while preventing excessive driver fatigue
Solution Approach 2:
The system changes the parameter of motor torque based on the detected operation status. By adjusting torque output according to clutch and shifting states, the system reproduces the mechanical characteristics of manual transmissions without requiring actual mechanical components, thus maintaining driving engagement while reducing mechanical complexity and driver burden
2Adaptability or versatility
If motor torque is adjusted to simulate manual transmission characteristics, then driving realism is improved, but control complexity increases
Solution Approach 1:
The controller performs multiple functions using a single integrated system: it manages motor torque control, monitors clutch operations, detects shifting operations, and simulates manual transmission characteristics all through one control unit. This multi-functionality approach avoids the need for separate complex subsystems while achieving realistic manual transmission simulation
Solution Approach 2:
The patent replaces the mechanical transmission system with an electrical control system. Instead of using actual clutch mechanisms and gear shifts, the system uses electronic sensors to detect operation status and adjusts motor torque accordingly, substituting mechanical complexity with electronic control simplicity
3Reliability
If clutch and shifting operations are monitored to estimate driver fatigue, then driver safety is improved, but measurement precision requirements increase
Solution Approach 1:
The system changes the monitoring approach from attempting to directly measure driver fatigue to monitoring objective operational parameters (clutch operation status and shifting operation status). By tracking these parameters over time and analyzing their patterns, the controller can infer driver fatigue levels without requiring complex physiological measurement systems
Solution Approach 2:
The controller uses clutch operation status and shifting operation status as intermediary indicators to estimate driver fatigue. Rather than directly measuring fatigue, the system monitors these operational parameters which serve as proxies for driver state, thereby reducing measurement precision requirements while maintaining safety benefits
Data Source
AI summary
A travel mode controller is configured to control a travel mode of a vehicle including a driving motor, an accelerator pedal, a dummy clutch pedal, and a dummy gear shift lever. The dummy clutch pedal is to be operated by a driver and configured to simulate a clutch operation. The dummy gear shift lever is to be operated by the driver and configured to simulate a shifting operation. The travel mode controller includes one or more processors; and one or more memories communicatably coupled thereto. The travel mode includes a manual transmission mode including validating the shifting operation and the clutch operation. The one or more processors are configured to, in the manual transmission mode, estimate a fatigue state of the driver based on the shifting operation or the clutch operation, and derive a control content of the manual transmission mode based on the estimated fatigue state.