Motor grader wheel lean control via sensor feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Operators of motor graders face challenges in accurately setting and maintaining the wheel-lean angle of front traction wheels, leading to premature tire wear due to inherent accuracy limitations of visual reference methods.
Innovation Solution
A system comprising an axle, a traction wheel, a wheel-lean angle sensor, a setpoint activation control, and a control unit that performs feedback control to automatically adjust the wheel-lean angle, allowing operators to set and maintain precise wheel-lean angles without visual references.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If visual reference methods are used to control wheel lean, then the device complexity is reduced, but the measurement precision of wheel-lean angle deteriorates
Solution Approach 1:
The patent replaces visual reference methods with an electronic sensor system that automatically measures and controls wheel-lean angle. The wheel-lean angle sensor electronically detects the actual angle and feeds this data to a control unit, eliminating the need for manual visual estimation and marks while significantly improving measurement precision.
Solution Approach 2:
The patent implements a feedback control system where the wheel-lean angle sensor continuously monitors the actual wheel-lean angle and compares it to the desired setpoint. The control unit adjusts the wheel-lean actuator based on this feedback to minimize the difference between actual and desired angles, ensuring precise control.
2Ease of operation
If visual reference methods are used to control wheel lean, then the ease of operation is improved, but the manufacturing precision of wheel-lean angle deteriorates
Solution Approach 1:
The patent enables the system to automatically control wheel-lean angle without requiring operator expertise in visual estimation. The sensor and control unit self-adjust the wheel-lean angle to the desired setpoint, eliminating human error while maintaining ease of operation through simple setpoint selection.
Solution Approach 2:
The patent replaces manual visual control with an automated electronic control system. The control unit processes sensor data and actuates the wheel-lean mechanism automatically, substituting human judgment with precise electronic measurement and control while keeping the operator interface simple.
3Measurement precision
If feedback control with sensor is implemented, then the measurement precision of wheel-lean angle is improved, but the device complexity increases
Solution Approach 1:
The patent integrates the wheel-lean angle sensor and control unit into the existing wheel-lean system, allowing these components to serve multiple functions. The sensor not only measures wheel-lean angle but also provides data for control decisions, while the control unit manages both measurement processing and actuator control, reducing overall system complexity.
Solution Approach 2:
The patent introduces a control unit as an intermediary between the sensor and the wheel-lean actuator. This intermediary processes sensor data, compares it with the desired setpoint, and generates appropriate control signals, simplifying the overall control architecture while enabling precise measurement and control.
4Productivity
If automatic feedback control is used, then the productivity is improved through reduced tire wear, but the device complexity increases
Solution Approach 1:
The patent implements feedback control where the wheel-lean angle sensor continuously monitors the actual angle and the control unit adjusts the actuator to maintain the desired setpoint. This automatic adjustment prevents premature tire wear by ensuring accurate wheel-lean angle, improving operational efficiency and productivity.
Solution Approach 2:
The system automatically maintains optimal wheel-lean angle through self-adjustment based on sensor feedback, eliminating the need for manual intervention and reducing tire wear. The control system serves itself by continuously monitoring and correcting wheel-lean angle, improving productivity through reduced maintenance and extended tire life.
Data Source
AI summary
A work vehicle comprises a leanable traction wheel. A control unit of the work vehicle is configured to cause the wheel to move to a wheel-lean angle setpoint.