Abstract
In industrial production,characteristics of temperature control is usually one-way, hysteretic nature, the inertia and time-varying, to achieve the rapid temperature control and accuracy, improving product quality and production efficiency are very important practical significance.
The topic for characteristics of temperature control and the significance of rapid realization, accurate temperature control in the real industrial production, based on the design of a humanoid intelligent PID algorithm, a constant temperature control system is designed. The elements include two parts: hardware and software. AT89S52 is as the microprocessors of the hardware which is as part of SCM, and respectively detailed design for the SCM power supply circuit, the temperature signal sampling circuit, keyboard and display circuit and heating. And totally, four control circuit module in the design；some of the major software design of the traditional PID algorithm was improved,by combining the traditional PID algorithm and humanoid intelligent control of theory, a new algorithm principle is advanced, that is, the intelligent humanoid PID control theory, which makes up the traditional PID algorithm in the real deficiencies in the application.
The keyboard input signal to the microcontroller temperature, then the temperature signal acquisition circuit temperature signal to the collection site SCM, based on input from the SCM and feedback signals to the operator error, the output control signals to the temperature control circuit, And heating and stop by the show circuit to achieve real-time monitoring the temperature at the scene.
Key words: SCM; auto-control;humanoid intelligent control principle; PID control algorithms.
