External Angle Sensors for Ackermann Steering Mechanism Fault Detection
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Solution Overview
Problem
Conventional sensors for measuring steering angles in heavy machinery are often internally located within the steering assembly, making replacement and maintenance difficult, leading to increased repair time and costs due to the need for replacing entire components.
Innovation Solution
The system includes external angle sensors mounted on the steering arms, isolated from unwanted movements using mechanisms like toggle links and brackets, allowing accurate measurement of steering angles without interfering with internal components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are located internal to components of the steering assembly, then measurement precision is improved, but ease of repair deteriorates
Solution Approach 1:
The system divides the steering assembly into separate functional components: the steering mechanism (hydraulic cylinders, tie rods, steering arms) and the sensing mechanism (angle sensors mounted on the frame). This segmentation allows the sensors to be independently accessible for maintenance while maintaining accurate measurement of steering angles through external observation of component positions.
2Measurement precision
If sensors are located internal to components of the steering assembly, then measurement precision is improved, but loss of time deteriorates
Solution Approach 1:
By segmenting the sensing function from the steering mechanism and mounting sensors externally on the frame, the system enables independent sensor maintenance without disassembling steering components. This reduces repair time while maintaining measurement accuracy through external position detection.
3Measurement precision
If sensors are located internal to components of the steering assembly, then measurement precision is improved, but ease of manufacture deteriorates
Solution Approach 1:
The system segments the sensing system from the steering mechanism, allowing sensors to be mounted externally on the frame. This simplifies manufacturing by enabling independent sensor installation and calibration without integrating sensors into complex steering components, reducing manufacturing complexity while maintaining measurement precision.
Data Source
AI summary
A machine includes a frame, a first steering arm, a second steering arm, a first hydraulic actuator coupled to the frame and the first steering arm, and a second hydraulic actuator coupled to the frame and the second steering arm. A first angle sensor measures a rotational displacement of the first hydraulic actuator relative to the first steering arm. A first link couples the first hydraulic actuator and the first sensor, and isolates movements other than the first rotational displacement. A second angle sensor measures a second rotational displacement of the second hydraulic actuator relative to the second steering arm. A second link couples the second hydraulic actuator and the second sensor, and isolates movements other than the second rotational displacement.