Hardware-in-the-loop simulation: Difference between revisions

Revision as of 13:01, 8 August 2022

Revision as of 15:18, 9 May 2023

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{{short description|Technique used in the development and testing of complex real-time embedded systems}}

'''Hardware-in-the-loop''' ('''HIL''') '''[[simulation]]''', '''HWIL''', or '''HITL''', is a technique that is used in the development and testing of complex real-time [[embedded systems]]. HIL simulation provides an effective testing [[platform (computing)|platform]] by adding the complexity of the process-actuator system, known as a [[Plant_Plant (control_theorycontrol theory)|plant]], to the test platform. The complexity of the plant under control is included in testing and development by adding a [[Representation (mathematics)|mathematical representation]] of all related [[dynamic systems]]. These mathematical representations are referred to as the "plant simulation". The embedded system to be tested interacts with this plant simulation.

==How HIL works==

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Systems", ''SICE-ICASE International Joint Conference'', 2006.</ref>

* [[Vehicle dynamics]], such as suspension, wheels, tires, roll, pitch and yaw;

* Dynamics of the brake system’ssystem's hydraulic components;

* Road characteristics.

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===High-burden-rate plant===

In many cases, the plant is more expensive than a high fidelity, real-time simulator and therefore has a higher-burden rate. Therefore, it is more economical to develop and test while connected to a HIL simulator than the real plant. For jet engine manufacturers, HIL simulation is a fundamental part of engine development. The development of Full Authority Digital Engine Controllers (FADEC) for aircraft jet engines is an extreme example of a high-burden-rate plant. Each jet engine can cost millions of dollars. In contrast, a HIL simulator designed to test a jet engine manufacturer’smanufacturer's complete line of engines may demand merely a tenth of the cost of a single engine.

===Early process human factors development===

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==External links==

* [http://www.hil-simulation.com/images/stories/Documents/Introduction%20to%20Hardware-in-the-Loop%20Simulation.pdf Introduction to Hardware-in-the-Loop Simulation].

[[Category:Embedded systems]]