Ground Ripping Machine Control System Mode Transition Logic
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Solution Overview
Problem
Existing automated control systems for mobile excavation machines, such as dozers and scrapers, face difficulties in seamlessly transitioning between auto-ripping mode and auto-shift mode, requiring manual adjustments of gears and throttle settings, which can be tiring for operators and inefficient.
Innovation Solution
A control system with a controller linked to operator inputs that allows for seamless shifting between auto-ripping and auto-shift modes by storing selected transmission output speeds and adjusting gears and throttle settings, enabling minimal operator input for mode transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the machine operates in auto-ripping mode with automated throttle and gear control, then operator fatigue is reduced and ripping efficiency is improved, but the complexity of the control system increases and manual intervention capability is limited
Solution Approach 1:
The control system is designed to perform multiple functions: it can operate in fully automated auto-ripping mode, fully automated auto-shift mode, and semi-automated modes where the operator can intervene. This multi-functionality allows the system to reduce operator fatigue while maintaining flexibility for manual intervention when needed.
Solution Approach 2:
The control system dynamically adjusts its level of automation based on operator input and operating conditions. The operator can switch between different modes of operation, and the system adapts its control strategy accordingly, balancing automated control benefits with manual intervention capabilities.
2Productivity
If the transmission is shifted to low gear and throttle increased to full throttle for auto-ripping mode, then ripping performance is optimized, but the difficulty of mode transition increases and operator input requirements increase
Solution Approach 1:
The control system pre-configures the optimal gear and throttle settings for auto-ripping mode. When the operator selects auto-ripping mode, the system automatically executes the necessary gear shifts and throttle adjustments that have been pre-calculated, eliminating the need for the operator to manually make multiple adjustments during the transition.
Solution Approach 2:
The control system continuously monitors the machine's operating parameters and automatically adjusts gear and throttle settings based on real-time feedback. This closed-loop control ensures that the transition to auto-ripping mode is smooth and that the system maintains optimal performance without requiring continuous operator intervention.
3Measurement precision
If the operator manually adjusts gear and throttle settings for mode transitions, then control precision is maintained, but the time required for mode switching increases and productivity decreases
Solution Approach 1:
The control system replaces manual mechanical adjustments with automated electronic control. The controller automatically manages gear shifts and throttle adjustments using electronic signals, which are faster and more precise than manual mechanical operations, thereby reducing mode switching time while maintaining or improving control precision.
Solution Approach 2:
The system automatically changes key operating parameters (gear ratio, throttle position) based on the selected mode. When transitioning between modes, the controller rapidly adjusts these parameters to their optimal values for the new mode, significantly reducing the time required for mode switching compared to manual adjustments.
4Productivity
If the controller automates gear shifting and throttle adjustment, then operation efficiency is improved, but the adaptability to varying terrain conditions requiring manual input is reduced
Solution Approach 1:
The control system is designed to be dynamic and adaptive, allowing the operator to switch between fully automated operation for efficient routine work and manual or semi-manual modes when unusual terrain conditions require specialized handling. This flexibility maintains high productivity while preserving adaptability to varying conditions.
Solution Approach 2:
The control system acts as an intelligent intermediary between the operator and the machine's mechanical systems. It can fully automate operations under normal conditions, but readily yields to operator input when terrain conditions require manual judgment, thus maintaining both efficiency and adaptability.
Data Source
AI summary
A control system for a machine equipped with a ripping tool. The control system includes a first operator input for generating a ripping control signal that initiates an auto-ripping mode. A second operator input is provided for generating a speed select signal for changing the transmission output speed of the machine to a selected transmission output speed. The system further includes a controller with a memory. The controller is linked to the first and second operator inputs. The controller is programmed to receive a ripping control signal from the first operator input and to activate the auto-ripping mode or auto-ripping mode and deactivate the auto-shift mode. The controller is also programmed to receive a speed select signal from the second operator input and to deactivate the auto-ripping mode and adjust the power source to the selected transmission output speed.