Hardware-in-Loop Chassis Simulation for Authentic ADU Testing
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Solution Overview
Problem
Current chassis simulation methods for automatic driving vehicles lack authenticity due to the use of idealized mock targets and software-only interactions, which interfere with tests and fail to replicate real-world scenarios, leading to incomplete and unrealistic testing.
Innovation Solution
A hardware-in-loop chassis simulation method using a virtual chassis connected via a hardware interface, where fault injection logic simulates software and hardware faults, allowing for more realistic closed-loop testing by interacting with the automatic driving unit through a real hardware interface, thereby enhancing test authenticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a mock target is used to simulate the vehicle chassis in software-only interactions, then the test can be performed without real vehicle chassis, but the test lacks authenticity and realism
Solution Approach 1:
The patent introduces a hardware interface as an intermediary between the automatic driving unit and the mock target. This hardware interface layer enables realistic signal transmission and reception, making the interaction more authentic while still allowing testing without a real vehicle chassis. The hardware interface acts as a mediator that bridges the gap between software simulation and physical reality.
2Extent of automation
If a mock target directly outputs chassis status information after executing control commands, then the closed-loop test can run at software level, but the processing logic coverage is incomplete
Solution Approach 1:
The patent modifies the interaction parameters by introducing a hardware interface that changes how control commands and status information are transmitted. Instead of direct software-to-software communication, the system uses hardware-level signal transmission with simulated delays and processing, thereby improving coverage of processing logic while maintaining high automation.
3Device complexity
If idealized mock target simulation is used, then the test setup is simple, but the test scenario does not reflect real-world conditions
Solution Approach 1:
The patent introduces dynamic characteristics to the mock target by implementing simulated processing delays and state transitions through the hardware interface. Instead of immediate direct output, the system now incorporates time delays and intermediate processing states that mirror real-world chassis behavior, enhancing scenario realism without significantly increasing setup complexity.
Data Source
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AI summary
The present disclosure discloses a chassis simulation method and apparatus, a server, a storage medium and a program product, which relate to the field of artificial intelligence and, in particular, to the field of intelligence driving. The method includes: acquiring (S101) a chassis control message transmitted from an automatic driving unit, and acquiring (SI02) fault injection information; generating simulation information of a chassis status corresponding to the chassis control message according to the chassis control message and the fault injection information; and transmitting (SI03) the simulation information of the chassis status to the automatic driving unit. The method realizes the chassis simulation scheme based on hardware-in-loop and improves the test authenticity.