Modeling & Simulation

Human-in-the-Loop (HTL)

Flight SimulatorHuman-in-the-Loop (HITL) Modeling & Simulation (M&S) is a model type that requires human interaction during runtime. It employs one or more human operators in direct control of the simulation/simulator or in some key support function. Human-centered M&S is distinguished from science and process-based simulations where human intervention and modeling does not occur. [1]

Human-in-the-Loop lends itself the ability for the user to change the outcome of an event or process. HITL is extremely effective for the purposes of training because it allows the trainee to immerse themselves in the event or process. The immersion effectively contributes to a positive transfer of skills acquired to the real world. This can be demonstrated by trainees utilizing flight simulators in preparation to become pilots. [2]

HITL allows users and engineers to gain better knowledge about how humans will react to process or systems during the development phase.  It shows were human interface problem could exist which allow for redesign and improved requirements definitions. This saves time and cost from redesign once a system is fielded.   HITL is often referred to as interactive simulation.

Examples of HITL include:[2]

  • Flight Simulators
  • Driving Simulators
  • Marine Simulators
  • Select Computer & Video Games

AcqLinks and References:

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