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Automatic Control and Data Acquisition System for Combustion Laboratory Applications.
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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A modern computer based automatic data acquisitioncontrol system was installed at the Department of Aeronautics Combustion Laboratory. This system utilizes an HP-85 desktop computer as system controller for the HP-3054A data acquisition system. Large quantities of high quality data can be acquired at high data rates and stored for future use or processed real time in closed loop feedback control circuis for precise process control and display. Other electromechanical equipment such as Visicorders provide analog real time data and run in parallel with digital equipment but can be remotely controlled for precise timing of experiments. Interactive programs on the HP-85 computer allow the experimenter to do preliminary calculations, initial experiment set-up, and to perform accurate process control of system functions. On line data reduction and display of results is performed by the system CRT display, the 7225B Plotter, or the system printer. Four basic experimentsexperimental apparatuses are currently automated using the automatic data acquisition system a light scattering experiment, a vitiated air heater, a solid fuel ramjet, and a turbojet combustor test rig. The first three applications are discussed in subsequent sections along with the measurement techniques used to implement the process.
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