Driver Starting Tendency Control via Dynamic Torque Adjustment
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Solution Overview
Problem
Conventional starting control systems do not accurately reflect a driver's tendency, leading to mismatched vehicle performance and customer dissatisfaction, as they rely on predetermined torque filters and maps regardless of the driver's preferences, resulting in suboptimal acceleration and start feeling.
Innovation Solution
A system and method that utilize a vehicle speed sensor, accelerator pedal position sensor, and controller to determine a driver's short-term and long-term driving tendencies, and starting tendency, adjusting engine and transmission control accordingly, using a weighted equation to calculate a starting tendency index and activate control modes based on accelerator pedal position variations and vehicle speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If predetermined torque filter and torque map are used for starting control, then control simplicity is maintained, but driver tendency accuracy deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of starting control parameters based on detected driver tendency. The controller continuously monitors accelerator pedal operation patterns and dynamically modifies torque filter characteristics and torque map selections to match the driver's preferred driving style, transitioning from static predetermined values to adaptive dynamic control
Solution Approach 2:
The system incorporates feedback mechanisms by continuously monitoring accelerator pedal position and operation patterns, analyzing driver tendency from this feedback data, and using the analyzed tendency information to adjust starting control parameters in real-time, creating a closed-loop control system that adapts to driver preferences
2Productivity
If quick torque increment is applied for starting control, then acceleration performance is improved, but start feeling deteriorates
Solution Approach 1:
The patent changes the torque increment parameters dynamically based on detected driver tendency. For drivers with sporty tendency, the system applies faster torque increment rates, while for drivers with mild tendency, it uses slower torque increment rates, thereby optimizing both acceleration performance and start feeling according to individual driver preferences
3Manufacturing precision
If same vehicle performance characteristics are used for all customers, then manufacturing consistency is maintained, but customer satisfaction deteriorates
Solution Approach 1:
The patent segments the homogeneous vehicle control system into personalized control profiles by categorizing drivers into different tendency groups (sporty, mild, etc.) based on their accelerator pedal operation patterns, allowing the same physical vehicle to deliver customized performance characteristics to different drivers
Data Source
AI summary
A system of determining starting tendency of a driver may include: a vehicle speed sensor detecting a vehicle speed an accelerator pedal position sensor detecting an accelerator pedal position, and a controller receiving information on input variables including the accelerator pedal position, the vehicle speed from the accelerator pedal position sensor or the vehicle speed sensor, determining a short term driving tendency, a long term driving tendency, and a starting tendency of the driver based on the information, and controlling an engine or a transmission according to the short term driving tendency, the long term driving tendency, and the starting tendency, in which the controller continuously determines the short term driving tendency of the driver for a predetermined time and determines the starting tendency of the driver from a predetermined number (n) of the short term driving tendencies of the driver.