Controlling Temperature of a Hot/Cold Reservoir

Design a system to control the water temperature of a mixing valve fed by two reservoirs. Output temperature is measured by a thermistor. The voltage of thermistor is utilized as an analog input to data acquisition cards. The simulation returns the temperature of water. The position of the valve is monitored by reading voltage across the potentiometer. The simulation and control program determines the position of the valve. The valve is controlled by 0 to 5 volt output. The thermistor is 0 to 2.5 volts.