Adaptive Throttle Filtering for Rough Terrain Engine Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing engine throttle control systems face challenges in addressing unintended throttle pedal movements caused by rough terrain, leading to undesirable engine behavior, decreased fuel economy, and gear hunting, with existing solutions imposing substantial computational requirements.
Innovation Solution
The implementation of adaptive throttle filtering methods that utilize vertical acceleration data and throttle pedal data to determine filter factors, filtering out unintended throttle pedal movements and transmitting filtered data to the engine controller for improved control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vibration sensor is used to detect vertical vibration and a correcting value is determined for every throttle pedal movement, then the problem of unintentional throttle pedal movements is addressed, but substantial computational requirements are imposed
Solution Approach 1:
The patent applies partial filtering by only processing throttle pedal movements that exceed a threshold value. Instead of computing correcting values for every throttle movement, the system selectively filters only those movements that are likely to be unintentional (excessive pedal depression), thereby reducing computational load while maintaining reliability for significant throttle disturbances
Solution Approach 2:
The system uses feedback from the vibration sensor to dynamically adjust the filtering process. The correcting value is computed based on real-time vertical acceleration data, and this feedback loop allows the system to adaptively compensate for vibrations only when necessary, optimizing the balance between throttle control accuracy and computational requirements
2Reliability
If throttle pedal data is filtered to remove unintended movements, then engine behavior is improved and fuel economy increases, but response time to legitimate throttle inputs may be delayed
Solution Approach 1:
The filtering operation is applied partially - only to throttle pedal movements that exceed a predetermined threshold. Legitimate throttle inputs below the threshold pass through without filtering, maintaining fast response time, while only excessive movements (likely unintentional) are filtered, ensuring engine stability for significant throttle changes
Data Source
AI summary
Systems and methods for adaptive throttle filtering are disclosed. One method includes receiving vertical acceleration data indicative of a plurality of vertical accelerations of a machine, receiving first throttle pedal data indicative of a plurality of throttle pedal movements, determining a filter factor based at least on the vertical acceleration data, filtering the first throttle pedal data, based at least on the filter factor, to determine second throttle pedal data, and causing the second throttle pedal data to be transmitted to a controller to effectuate control of an operation of an engine.