Material Properties Of Testing Furnacing Temperature Control System Base On μC/Os-Ⅲ

Temperature is a critical process parameter in the material properties of measurement process. In existing materials testing furnace temperature control system the shortage of control accuracy, the control objectives and the structure of system make serious impact on the accurate measurement of material properties parameters. In order to solve the problem, this article is based on new material testing furnace for the object, a special temperature control system is designed to ensure the measurement of material parameters accurately and smoothly.According to the requirements of measured parameters in the testing furnace temperature control system, the types of measured parameters, measurement methods and system components and principles are analysised in detail. At the same time, combined with the characteristics of the testing furnace, testing randomness, the steady-state error and dynamic tracking error of the target temperature are fully considered. Finally, simulation model is established in LABVIEW. Through simulation, the results show that the algorithm has a great advantage in the materials testing furnaces.In hardware, TMS320F2812is used as the main controller of the temperature control system, give full play to its strengths in terms of arithmetic operations. In order to achieve precise temperature control and remote control,create a single, integrated platform material parameters measure and temperature control system, the temperature measurement circuit, the thyristor voltage regulator circuit, the human-computer interaction circuit, the external communication circuits and high-speed HPI circuit are all builded. In software, temperature measuring, the human-computer interaction, the parameters of fuzzy PID and external communication tasks are all writed. To ensure Flexibility and diversity of applications, the μC/OS-Ⅲ embedded operating system is transplanted successfully, greatly enriched and improved temperature control system. The actual results show that the design of the temperature control system has high reliability and stability, able to meet the requirements of the parameter measurement of material properties.