Vehicle Test Stand With Multi-Axis Movable Rollers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current test stands for vehicles lack the ability to simulate a wide variety of driving situations, including curved paths and dynamic movements like snaking or skidding, and struggle to accurately assess the response of vehicle dynamics systems and their components, limiting their effectiveness in testing safety-relevant functions and driver assistance systems.
Innovation Solution
A test system with a test stand that incorporates an X-slide driven by a motor, allowing for movement in the X-direction, and a Y-carriage that can move parallel to the vehicle's longitudinal axis, combined with a rotatable receiving plate on a Z-axis, enabling variable mobility of test rollers in X, Y, and Z-directions. This setup allows for precise simulation of driving scenarios using electric drive motors, including abrupt changes and dynamic movements, while sensors record sensor characteristics for accurate analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional roller test stand is used to check basic vehicle functions, then the testing process is simple and the structure is straightforward, but the ability to simulate realistic driving situations including curved paths and dynamic movements is insufficient
Solution Approach 1:
The test stand incorporates movable carriages (X-carriage, Y-carriage) that can dynamically adjust positions during testing, allowing simulation of curved paths and dynamic vehicle movements. The receiving plate can rotate about Z-axis, enabling realistic representation of wheel contact point movements during cornering and maneuvering operations
Solution Approach 2:
The invention adds spatial dimensions to the test stand by introducing X-carriage movement transverse to vehicle longitudinal axis, Y-carriage movement parallel to the longitudinal axis, and Z-axis rotation of the receiving plate. This multi-dimensional mobility enables simulation of complex driving scenarios that cannot be achieved with fixed roller arrangements
2Adaptability or versatility
If fixed test rollers are used on the test stand, then the device complexity is reduced, but the ability to simulate curved paths and dynamic movements like snaking or skidding is lost
Solution Approach 1:
The test rollers are mounted on a rotatable receiving plate that can rotate about the Z-axis. This dynamic configuration allows the rollers to change their angular position during testing, enabling simulation of curved paths and dynamic movements while maintaining a relatively simple mechanical structure
Solution Approach 2:
The movable carriage system and rotatable receiving plate serve multiple functions: they enable simulation of curved paths, straight-line driving, and dynamic movements such as snaking or skidding. This multi-functional design achieves high adaptability without requiring separate specialized mechanisms for each driving scenario
3Reliability
If a simple roller test stand structure is used, then manufacturing and operation are easier, but the assessment of vehicle dynamics systems and safety-relevant functions is limited
Solution Approach 1:
The invention replaces complex mechanical linkages with electric drive motors to control the movement of the X-carriage, Y-carriage, and receiving plate rotation. This substitution simplifies the mechanical structure while enabling precise and programmable control of the simulated driving conditions, improving both reliability and ease of operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables realistic simulation of various driving situations, allowing for reliable testing of vehicle dynamics systems and components, improving the assessment of safety-relevant functions and driver assistance systems, and providing detailed insights into vehicle responses to different stimuli, leading to more intelligent and reliable vehicle control systems.
Implementation Method 1
at least one of the test rollers is assigned a drive motor, by which the at least one test roller can be rotated and/or braked
Implementation Method 2
sensors are provided on the vehicle and the test stand, with which sensor characteristic values of the vehicle and the test stand can be recorded
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The test system has a test stand (50) with a control unit (49), to which sensor characteristic values are transferable. The test stand has a x-slide (12) drivable by a drive motor (17), and is slidable in and out in a x-direction extending transverse to vehicle longitudinal axis. A y-slide (42) is movable with the x-slide, and is slidable in and out in a y-direction parallel to the vehicle longitudinal axis. A z-axis extending perpendicular to the x-direction and y-direction is mounted on the y-axis, where a receiving plate (21) rotatable around the z-axis is provided on the z-axis. An independent claim is included for method for testing a vehicle on a test stand.