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The control action is the switching on/off of the boiler, but the controlled variable should be the building temperature, but is not because this is open-loop control of the boiler, which does not give closed-loop control of the temperature. In closed loop control, the control action from the controller is dependent on the process output.
Hardware-in-the-loop (HIL) simulation, also known by various acronyms such as HiL, HITL, and HWIL, is a technique that is used in the development and testing of complex real-time embedded systems. HIL simulation provides an effective testing platform by adding the complexity of the process-actuator system, known as a plant , to the test platform.
Also the Colt Python Hunter was unveiled, which was the 8-inch Python with Pachmayr grips, factory-mounted 2X Leupold scope on the barrel with Redfield mounts, and packaged in a Haliburton case that included a Colt-marked plastic ammunition box, wood handle cleaning rod and tool kit. The Colt Python Hunter was the first field-ready handgun ...