Automated process control systems: concepts and hardware
Introduction to & survey of automatic control systems. Describes the theory, hardware, & applications techniques used in the automation of the typical process control systems.
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A/D converter accuracy actually analog computer analog controllers analog signal analog-to-digital converter applications armature automatic control system basic binary digital binary number binary word block diagram capability capacitor cause central processing unit circuit circuitry command common computer's connected counter courtesy current flowing dc motor designed devices difference differential digital computer discussed electronic energy equipment error example feedback Figure fluidic logic frequency function gain hardware hexadecimal hydraulic illustrated in Fig input voltage instruction integrator interface linear liquid machine language magnetic field measurement mechanical memory meter module motion normally number system octal op-amp open-loop operational amplifier output voltage pneumatic portion position pressure process control systems process variable proportional pulse Referring to Fig relay resistance resistor rotary rotating rotor schematic sensors setpoint signal specific stator stepper motor switch tank technique tion transducer troubleshooting tube unit valve Wheatstone bridge winding wire zero