Single Sensor Bale Loader Arm Position Control
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Solution Overview
Problem
Existing bale handling systems require multiple sensors for precise control of the lifting arm, leading to increased space requirements and vulnerability to debris, as well as higher complexity and cost.
Innovation Solution
A single position sensor and purposefully designed sensor target are used to monitor and control the bale loading arm's position throughout its 180-degree range of motion, reducing the number of sensors needed and simplifying the control system, making it more compact and durable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are used to monitor the lifting arm position, then control precision is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines multiple sensing functions into a single sensor system. The single sensor is positioned to detect the lifting arm position at critical points throughout its range of motion, merging what would traditionally require multiple sensors distributed around the rotational axis into one consolidated sensing location, thereby reducing system complexity while maintaining control precision
Solution Approach 2:
The single sensor is designed to perform multiple sensing functions throughout the lifting arm's entire range of motion. By strategically positioning the sensor and designing the control algorithm to interpret readings at different arm positions, one sensor universally monitors all critical positions, replacing the need for multiple specialized sensors
2Measurement precision
If multiple sensors are mounted around the rotational axis, then measurement coverage is improved, but the sensing apparatus becomes more exposed to debris and damage
Solution Approach 1:
The patent consolidates multiple sensor mounting locations into a single sensor position that is protected from debris and damage. By placing the single sensor in a sheltered location on the bale wagon rather than exposing multiple sensors around the rotational axis, the system maintains measurement capability while reducing vulnerability to harmful environmental factors
3Measurement precision
If a large cam surface is used as a target for multiple sensors, then sensing accuracy is improved, but the space requirement increases
Solution Approach 1:
The patent reduces the cam surface target size by consolidating sensing to a single location. The single sensor reads from a more compact cam surface feature, eliminating the need for a large cam surface that would be required to accommodate multiple sensor targets spaced around the rotational axis, thereby reducing the space requirement
Data Source
AI summary
An improved control system for managing rotation of a bale loading arm in a bale loader in which a single position sensor combined with a purposefully designed sensor target enable loading arm position to be efficiently determined by a controller in order to direct the actuator movements based upon loading arm position necessary for automated operation of a bale loading cycle.