Sequential Transmission Shift System Torque Feedback Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Sequential transmission systems face challenges in accurately detecting gear jams and adapting to wear and temperature changes, leading to potential damage from excessive strain on the transmission and control motor due to the lack of precise calibration and interference detection.
Innovation Solution
The system incorporates a control motor connected to a selector drum with a torque sensor and current sensor, allowing the controller to adjust the motor's operation based on torque changes and detect gear jams, while position sensors ensure precise calibration and mechanical biasing adapts to wear and transient conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a control motor is used to rotate the selector drum in sequential transmission, then gear shifting can be automated and shifted faster, but the system cannot accurately detect gear jams and adapt to wear changes, leading to potential damage from excessive strain
Solution Approach 1:
The patent implements feedback mechanisms through torque sensors that continuously monitor the torque applied to the selector drum during gear shifting. When a gear jam is detected (abnormal torque levels), the system provides feedback to the control motor to adjust or halt the shifting operation, preventing damage while maintaining automated high-speed shifting capability
Solution Approach 2:
The patent replaces purely mechanical gear selection with an electronically controlled motor system that incorporates sensor feedback. This substitution allows for precise control and detection of gear engagement status through electronic sensors monitoring torque and position, enabling reliable automated operation
2Device complexity
If the transmission operates without precise calibration and interference detection, then the device complexity is reduced, but excessive strain on the transmission and control motor can occur due to undetected gear jams
Solution Approach 1:
Torque sensors provide continuous feedback during gear shifting operations, enabling the control system to detect abnormal conditions (gear jams) and respond appropriately. This feedback mechanism prevents excessive strain on transmission components and control motor without requiring complex mechanical interference detection systems
Solution Approach 2:
The system performs self-diagnosis through torque monitoring during normal operation. The control motor and control system work together to detect potential issues and adjust operation to prevent damage, enabling the transmission to monitor and protect itself without external intervention or complex additional mechanisms
Data Source
AI summary
An apparatus for controlling a sequential transmission of a vehicle is provided comprising a control motor that drives a selector drum for shifting gears wherein the apparatus measures torque applied to or position of the selector drum and controls the control motor to engage the gears, to accommodate for wear and transient gear interference or jamming.