Machine Control System Kick-Out Command Validation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In rapidly changing and unpredictable environments, wheel loaders and similar machines are prone to accidental or unintentional user control activations, leading to unintended operations due to the lack of effective mechanisms to differentiate between intentional and accidental kick-out commands.
Innovation Solution
A control system equipped with sensors to generate load and position data, coupled with a controller that receives user commands and kick-out commands, determines the work implement's load state, and accepts or rejects kick-out commands based on this state to prevent unintended movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If kick-out controls are provided to enable rapid movement of the work implement to predefined positions, then operational efficiency is improved, but the risk of accidental activation increases
Solution Approach 1:
The control system incorporates sensors that continuously monitor work implement position and provide feedback to the controller. This feedback mechanism allows the system to verify the current state before executing kick-out commands, enabling differentiation between intentional and accidental activations while maintaining rapid movement capability
Solution Approach 2:
The system performs preliminary verification of work implement position and operator intent before executing kick-out commands. The controller checks sensor data to confirm the implement is in the correct position and that the activation is intentional, preventing accidental operations while preserving operational efficiency
2Speed
If the controller executes kick-out commands without verification, then response speed is improved, but unintended operations may occur
Solution Approach 1:
The controller performs preliminary verification of work implement position using sensor data before executing kick-out commands. This preliminary check confirms the implement is in the correct position and that activation is intentional, preventing unintended operations while maintaining rapid response capability
Solution Approach 2:
The controller acts as an intermediary between the kick-out control input and the actuator execution. It mediates by verifying sensor feedback and determining whether to permit command execution, thereby preventing unintended operations while preserving speed
Data Source
AI summary
A control system for a machine having a linkage, a work implement mounted on the linkage, and at least one actuator is provided. The actuator is connected to the linkage and controlled using the control system to move the linkage and the work implement. The control system includes sensors that are configured to sense a current load and position of the work implement. Upon sensing the current load and position of the work implement, a controller provided in the control system can reject or accept a given kick-out command issued from one or more user controls of the control system based on various criteria associated with the sensed load and position of the work implement.