Wheel Loader KickDown Control via Dynamic Trigger Adjustment
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Solution Overview
Problem
Current methods for triggering KickDown in wheel loaders are costly due to the requirement for bucket position sensors and slope or acceleration sensors, which are not always equipped in loaders.
Innovation Solution
A method and device that adjust the original trigger conditions for KickDown based on the release way of the wheel loader, allowing for advanced triggering without the need for these sensors, by determining the current state and adjusting trigger thresholds to facilitate or hinder triggering accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If bucket position sensor and slope/acceleration sensor are installed to trigger KickDown in advance, then KickDown triggering accuracy is improved, but device cost increases
Solution Approach 1:
The system uses existing sensors (accelerator pedal position sensor, engine speed sensor, transmission load sensor) that are already installed in the wheel loader to determine working states and trigger KickDown. The control method leverages data from these existing sensors to self-determine when KickDown should be activated, eliminating the need for additional dedicated sensors while maintaining accurate triggering.
Solution Approach 2:
The existing sensors in the wheel loader are made multi-functional. The accelerator pedal position sensor, engine speed sensor, and transmission load sensor are not only used for their original functions but also for determining working states (working vs. traveling) to trigger KickDown. This universal use of existing components avoids the need for dedicated KickDown triggering sensors.
2Productivity
If KickDown is triggered in advance during working state, then power allocation to bucket is improved, but false triggering during traveling state may occur
Solution Approach 1:
The trigger conditions for KickDown are dynamically adjusted based on the determined working state. When the system determines the wheel loader is in working state (bucket in working position range), KickDown is triggered in advance. When in traveling state, KickDown is not triggered in advance. This dynamic adjustment of triggering strategy based on operational context prevents false triggering while ensuring timely power allocation during actual working operations.
Solution Approach 2:
The system continuously monitors sensor data (accelerator pedal position, engine speed, transmission load) and uses this feedback to determine the current working state. Based on this feedback, the control method decides whether to trigger KickDown in advance or not, creating a closed-loop control system that adapts to real-time operational conditions and prevents inappropriate triggering.
Data Source
AI summary
Disclosed in the present application are a method and apparatus for controlling a wheel loader, and a wheel loader and a storage medium, wherein an original trigger condition for KickDown is preset in the wheel loader. The method for controlling a wheel loader comprises: acquiring a way for releasing KickDown of a wheel loader; determining the current state of the wheel loader on the basis of the way for releasing KickDown; and when the current state of the wheel loader is working state, adjusting an original trigger condition to a first trigger condition, wherein the first trigger condition is easier to trigger than the original trigger condition.