Stabilizing Device for Driverless Single-Track Vehicle Roller Testing
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Solution Overview
Problem
Existing roller dynamometers struggle to stabilize single-track motor vehicles during test runs, especially when both front and rear wheels need to be driven, as they tend to tip or move away from the center, requiring a driver to intervene with steering movements.
Innovation Solution
A stabilization device with a fixed base part, a connecting element, and a joint element with a vertical axis of rotation is connected to the front wheel steering part, allowing passive self-stabilization by returning the front wheel to its target position, which also guides the rear wheel back to its target position, eliminating the need for active control or servomotors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both front and rear wheels are driven on a roller dynamometer, then the vehicle can be tested for different driving conditions, but the vehicle tends to tip or move away from center, requiring driver intervention
Solution Approach 1:
The stabilizing device enables the vehicle to self-stabilize through passive mechanical means. The joint element with vertical axis of rotation automatically returns the front wheel to the desired position when deviations occur, eliminating the need for active driver intervention or complex active control systems while maintaining vehicle stability during dual-wheel testing
Solution Approach 2:
The stabilizing device acts as an intermediary between the front wheel steering part and the roller dynamometer. It connects to the front-wheel steering part via a connecting element and provides stabilizing forces through the joint element, mediating the interaction between the vehicle and the test bench to prevent tipping and lateral movement
2Stability of the object's composition
If a driver is required to stabilize the vehicle during testing, then vehicle position can be maintained, but the operation requires active human intervention and cannot be fully automated
Solution Approach 1:
The stabilizing device enables autonomous operation by providing self-stabilization capabilities. The passive mechanical system automatically corrects front wheel position deviations through the joint element's vertical axis of rotation, allowing the vehicle to maintain stable position without driver intervention and enabling fully automated driverless testing
Solution Approach 2:
Instead of using active control systems that require sensors, actuators, and complex control algorithms to maintain stability, the invention uses a passive mechanical approach where the joint element's geometry and gravity naturally provide the stabilizing force, inverting the conventional approach to vehicle stabilization
3Stability of the object's composition
If the front wheel is fixed in a clamping device, then the vehicle remains upright, but the front wheel cannot be driven or steered during testing
Solution Approach 1:
The stabilizing device transforms the static clamping approach into a dynamic stabilization system. The joint element with vertical axis of rotation allows the front wheel to move freely for driving and steering while providing automatic stabilizing forces when position deviations occur, enabling both wheel drive capability and upright position maintenance
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 stable, driverless operation of single-track motor vehicles on roller dynamometers by preventing tipping and maintaining the vehicle's position without active regulation, reducing rolling friction and allowing for independent operation of front and rear wheel roller units.
Implementation Method 1
a joint element (13) connected to the base part (12) and the connecting element (14), wherein the joint element has at least one substantially vertical axis of rotation (16)
Implementation Method 2
the stabilizing device tilts the front wheel steering element of the motor vehicle, thus forcing a steering movement that returns the front wheel to the target front wheel position
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3C
AI summary
The invention relates to a method for stabilizing a driverless single-track motor vehicle (2) during a test run on a roller dynamometer (1) with the following steps: connecting of a front wheel steering part (10) of the motor vehicle (2) to a stabilizing device (9) which has a stationary base part (12), a connecting element (14) for connecting to the front wheel steering part (10) and a joint element (13) which is connected to the base part (12) and the connecting element (14), wherein the joint element (13) has at least one substantially vertical rotational axis (16); driving of a front wheel (7) by way of a front wheel roller unit (11) and/or driving of a rear wheel (4) by way of a rear wheel roller unit (5); and stabilizing of the motor vehicle (2) by returning the front wheel (7) to a front wheel setpoint position (PV_Soll) by way of the stabilizing device (9) in the case of a deviation of the front wheel (7) from the front wheel setpoint position (PV_Soll). Furthermore, the invention relates to a stabilizing device (9), a roller dynamometer (1) with a stabilizing device (9) of this type, and a test system (26) consisting of a roller dynamometer (1) and a single-track motor vehicle (2).