Hardware-in-the-loop testing

Hardware-in-the-loop (HIL) test methodology that can be used throughout the development of real-time embedded controllers to reduce development time and improve the effectiveness of testing.

Overview

As the complexity of electronic control units (ECUs) increases, the number of combinations of tests required to ensure correct functionality and response increases exponentially. Older testing methodology tended to wait for the controller design to be completed and integrated into the final system before system issues could be identified.
Hardware-in-the-loop development and test methodology provides a way of simulating sensors, actuators and mechanical components in a way that connects all the I/O of the ECU being tested, long before the final system is integrated. It does this by using representative real-time responses, electrical simulation and functional use cases. 

Below figure shows for a top level diagram showing the
key components of a SNETLY HIL test system.

Hardware-in-the-loop (HIL) test methodology using Snetly System

The part of the testing that represents the environment, sensors and associated hardware is called the plant model. Low complexity plant model can be incorporated in Snetly system or existing plant model from simulink can be used. Snetly supports co-simulation with Simulink models running in a host connected through Ethernet

The parts of the development & testing of controller design model can be developed using Snetly system.

HIL helps to test the behavior of your control algorithms without actual plant.

Hardware-in-the-loop (HIL) test methodology using
Snetly System with Simulink plant model

How does the user interact with the Snetly system?

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