Multi-controller combined hil bench message frame loss fault injection test system and method

Abstract

The invention discloses a multi-controller combined HIL bench message frame loss fault injection test system and method, comprising a multi-controller combined HIL environment model, a host computer, a first communication network management module and a virtual network management module; The joint HIL environment model includes a HIL test bench and N controllers. The HIL test bench includes a test management module, a first communication board and N‑1 second communication boards; N controllers include a control to be tested controller and (N-1) non-measured controllers, N≥2, N is an integer; each non-measured controller is connected to a second communication board, through each controller, the first communication network and the virtual network The logical relationship between them can perform frame loss simulation for any packet of a specific controller selected arbitrarily at any time. Through the analysis of test data after fault injection, it is possible to evaluate the composition of multiple controllers after a frame packet has a frame loss fault. system impact.

Description

technical field [0001] The invention relates to the field of fault injection testing of HIL testing systems, in particular to a method for a multi-controller combined HIL bench message frame loss fault injection testing system. Background technique [0002] HIL testing (hardware-in-the-loop testing) is an important verification method for system integration testing in the V process development of the vehicle control strategy for new energy vehicles. In addition to shortening the development cycle of the controller and reducing the development cost, the HIL test link is prior to the real vehicle test, and the hardware-in-the-loop test environment can be used to perform some extreme working conditions tests, which can avoid risks in the real vehicle test. It simulates the virtual working environment of the vehicle controller by building a test model, observes the output of the controller by changing various input conditions, and detects the correctness of the functional logic ...

AI Technical Summary

Problems solved by technology

At the same time, each controller can also receive messages sent by other controllers on the communication network through the communication board, and the communication board of the platform can transmit the messages to the controller through a hard line, and the communication network formed by the platform communicates with the whole vehicle The network is the same, and the messages of each controller are automatically sent and received, while the HIL test bench can only perform the frame loss fault injection test for a single communication board. Once the communication network is formed between the communication boards and the controllers work normally, the HIL The test bench cannot perform frame loss fault injection simulation tests on specific packets of any controller

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