Automated Driving Vehicle Test Bench for Simultaneous Longitudinal Lateral Performance
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Solution Overview
Problem
Current testing systems for Automated Driving Vehicles cannot simultaneously perform comprehensive longitudinal and lateral performance tests, necessitating separate equipment and proving ground tests.
Innovation Solution
A comprehensive performance test system featuring a base platform with a lateral moving platform and a rotary platform, equipped with guide rails, motors, front and rear wheel dynamometers, and adjustment mechanisms to simulate two degrees of freedom steering, four-wheel driving load, body yaw, and lateral movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate test equipment is used for longitudinal and lateral performance tests, then each specific test can be performed, but the testing system complexity increases and testing efficiency decreases
Solution Approach 1:
The patent combines longitudinal and lateral performance testing capabilities into a single integrated test bench. The test bench integrates a chassis dynamometer for longitudinal testing with a 6 DOF motion simulator for lateral testing, allowing both types of performance tests to be conducted simultaneously on the same platform, thereby reducing overall system complexity while maintaining testing completeness
Solution Approach 2:
The test bench is designed with multi-functional capabilities to perform both longitudinal and lateral performance tests. The universal platform can accommodate different vehicle types and test configurations, making it applicable for comprehensive Automated Driving Vehicle performance evaluation without requiring separate specialized equipment for each test type
2Ease of operation
If road testing in proving ground is used, then lateral performance can be tested, but the testing cannot be performed simultaneously with longitudinal performance tests in a controlled environment
Solution Approach 1:
The patent introduces an intermediary controlled environment (the integrated test bench) that mediates between road testing and laboratory testing. This intermediary platform provides the controlled environment of a laboratory while incorporating the lateral motion simulation capabilities that were previously only available through road testing, thereby achieving comprehensive testing without requiring actual road tests
3Ease of manufacture
If fixed configuration test equipment is used, then the equipment structure is simple, but it cannot accommodate different vehicle types with varying wheelbases and track widths
Solution Approach 1:
The test bench incorporates adjustable and reconfigurable components that allow the equipment to adapt to different vehicle types. The wheelbase adjustment mechanisms and track width adjustment mechanisms enable the test bench to accommodate vehicles with varying dimensions, transforming a static fixed configuration into a dynamic adaptable system while maintaining manufacturing simplicity through modular design
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 simultaneous testing of longitudinal and lateral performance, accommodating various vehicle types through adjustable wheelbases and load simulations, effectively replicating real-world driving conditions.
Implementation Method 1
a lateral moving platform which is mounted on the base platform and can slide left and right on the base platform
Implementation Method 2
a rotary platform which is mounted on the lateral moving platform and can rotate horizontally
Implementation Method 3
each front wheel rotary dynamometer, and a load motor for driving the rotation of the front wheel rotary dynamometer. Each rear wheel's bracket is equipped with a rear wheel rotary dynamometer
Implementation Method 4
The three actuators are arranged in triangle... the three actuators can drive the motion platform sliding upper and lower
Data Source
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AI summary
A comprehensive performance test system for Automated Driving Vehicles related to the technical field of vehicle testing equipment. It solves the technical problem of testing Automated Driving Vehicles. The system comprises a base platform, a lateral moving platform mounted on the base platform, and a rotary platform mounted on the lateral moving platform; There are two front wheels' brackets in the front of the rotary platform which can slide left and right, and two front wheel track adjustment mechanisms to control the movement of left and right sliding of two front wheels' brackets; There are two rear wheels' brackets on the rear of the rotary platform which can slide front and back, and two wheelbase adjustment mechanisms to control the movement of front and rear sliding of two rear wheels' brackets. Each front wheel bracket is equipped with a dynamometer bracket which can rotate horizontally, and each front wheel dynamometer bracket is equipped with a rotary dynamometer and a motor for driving the rotation of the front wheel dynamometer. Each rear wheel bracket is equipped with a rear wheel rotary dynamometer and a load motor for driving the rotation of the real wheel rotary dynamometer. The system provided by the invention can test the longitudinal and lateral performance of Automated Driving Vehicles.