Vehicle Test Fixture Frame Assembly with Adjustable Sensor Arm
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Solution Overview
Problem
Existing vehicle test fixtures face issues with inadvertent movement during testing due to inadequate mounting, and lack of adjustability, which limits the accuracy and precision of measurement data collected.
Innovation Solution
A frame assembly with mounting feet attached to the vehicle floorboard, a frame body extending around the seat, an actuator mounting assembly, and a sensor mounting arm, allowing for adjustable positioning of a robot pedal actuator and position sensor to accurately measure pedal displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid mounting system is used to prevent movement during testing, then reliability is improved, but device complexity increases
Solution Approach 1:
The mounting system is divided into separate functional components: mounting feet for attachment to the floorboard, a frame body for structural support, an actuator mounting assembly for securing the test fixture, and a sensor mounting arm for positioning sensors. This segmentation allows each component to be optimized for its specific function while maintaining overall system reliability.
Solution Approach 2:
The frame assembly incorporates adjustable positioning mechanisms that allow the test fixture and sensors to be dynamically repositioned relative to the frame body. This adjustability enables the system to adapt to different testing configurations while maintaining rigid mounting stability during actual testing operations.
2Measurement precision
If adjustability is provided for accurate measurement, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The actuator mounting assembly and sensor mounting arm incorporate adjustable positioning mechanisms that enable precise alignment of the test fixture and sensors with the pedal being tested. These mechanisms allow for fine-tuning of positions to achieve optimal measurement accuracy while maintaining a relatively simple overall structure.
Solution Approach 2:
The frame body serves multiple functions: it provides structural support, accommodates the actuator mounting assembly, supports the sensor mounting arm, and offers a stable reference frame for measurements. This multi-functionality reduces the need for additional complex components while achieving precise measurement capabilities.
3Device complexity
If a simple mounting system is used, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The mounting system is divided into separate functional components: mounting feet for attachment to the floorboard, a frame body for structural support, an actuator mounting assembly for securing the test fixture, and a sensor mounting arm for positioning sensors. This segmentation allows each component to be optimized for its specific function while maintaining overall system reliability.
Solution Approach 2:
The frame assembly incorporates adjustable positioning mechanisms that allow the test fixture and sensors to be dynamically repositioned relative to the frame body. This adjustability enables the system to adapt to different testing configurations while maintaining rigid mounting stability during actual testing operations.
Data Source
AI summary
A frame assembly for mounting a test fixture includes a plurality of mounting feet configured to attach to a floorboard of a vehicle and a frame body coupled to the plurality of mounting feet. The frame body includes first and second side frame members spaced laterally apart from each other, and at least one cross frame member that extends between the first and second side frame members. The frame assembly further includes an actuator mounting assembly coupled to the frame body for coupling to the test fixture, and a sensor mounting arm coupled to the actuator mounting assembly. The sensor mounting arm extends from a first end coupled to the actuator mounting assembly, away from the frame body, to a second, free end configured for attachment to a position sensor.