HIL system

HIL systemIntroduction

The Hardware in the Loop testing system uses a real-time processor to run a simulation model to simulate the operating status of the controlled object. It is connected to the tested ECU through an I/O interface to conduct comprehensive and systematic testing of the tested ECU. From the perspectives of safety, feasibility, and reasonable cost, hardware in the loop testing has become a very important part of the ECU development process, reducing the number of actual vehicle road tests, shortening development time and reducing costs, while improving the software quality of the ECU and reducing risks for automobile manufacturers.

In the new field of new energy vehicles, hardware in the loop testing is crucial for the three core electronic control systems: vehicle control system, BMS battery management system, and MCU motor controller.

Test Introduction

Hardware in the loop testing is a key link in the development of hybrid power controllers and component controllers, which can verify the controller's functionality before bench testing and road testing, shortening the controller development cycle. Build a hybrid hardware in the loop testing system to conduct hardware in the loop testing on the vehicle controller and component controllers. Comparing the automatic generation methods of control strategy test cases, using genetic algorithm to automatically generate test cases for hybrid power control strategy has improved the efficiency of controller development.

HIL systemFunction Introduction (DC-DC Module Testing)

This system can support the following functions:

1. Functional testing: Simulate various operating conditions according to the controller's functional specifications to achieve core functional testing of the controller;

2. Fault diagnosis testing: Based on the injection of different types of faults, achieve fault diagnosis testing of the controller;

3. Communication testing: Conduct communication function testing on the controller bus based on the communication content of the controller bus;

4. Automated testing: Based on graphical operating software, the system can achieve automated testing and report generation functions;

5. Performance testing: able to support regression testing, repeatability testing, etc. of the controller;

6. Scalability requirements: Based on reserved software, hardware, and model resources, secondary development and parameter configuration of simulation models can be carried out to achieve extended testing of other controllers.