Electric resistance furnace temperature control system
abstract
In material burned knot, heat handle etc. craft process, the temperature control is a count for much link.The control accuracy affects the quality of the product quantity directly.This text introduced a kind of with digital signal processor DSP for core of electric resistance furnace temperature control system.Its main function is the temperature signal that thermocouple( platinum rhodium 10 and the platinum ) examine after change to send the machine transformation, then send into DSP inner part proceed the A/ D conversion, with the temperature of the enactment continuously of the proceeding compare, changing the rate with the deviation according to the different deviation, making use of the calculate way of PID of the improvement compute a control deal.Passing again can control the silicon triggers the technique, proceeding the control to the system.This system can pass the keyboard operation proceeds the temperature the enactment.Eight LEDs figures takes care of difference manifestation temperature with heat time.Exceeding to warn temperature system can report to the police automatically.
Key phrase: The temperature control, improvement PID arithmetic, deviation, deviation rate of changes.
