Hardware Design Of Fused Deposition Modeling Temperature Control System

In the present field of Rapid Prototyping, the "New RP Technology" based on jetting technology is replacing the "Conventional RP Technology" based on laser technology as the mainstream of the Rapid Prototyping Technology. Fused Deposition Modeling (FDM) is the most popular Rapid Prototyping technology based on jetting technology.This paper mainly does research deeply on the temperature control system of FDM system. Temperature controlling is widely to food, sanitation, medical treatment, chemistry and industry. Along with the development of sensor technology, micro-electronics technology and singlechip technolog, brainpower temperature controlling system is perfected, precision of measurement and controlling is enhanced and the ability of anti-jamming is swelled. Singlechip AT89C52 in this paper is a high-powered 8-bit chip. It has plenty of hardware resource and strong ability for anti-jamming. It is specially suitable for making brainpower measurement instrument and industry controlling system. The hardware resource of singlechip AT89C52 is fully exploited in this paper. This system realizes precise measurement and controlling of temperature signal with a little hardware resource.First, the need of temperature control is expounded. Temperature is a main control parameter in industrial object. Various calefaction stoves, ovens and constant temperature boxes which all need control temperature are widely used in many industry such as metallurgy, chemistry, mechanism and foodstuff. Moulding room and spout temperature awfully affect the precision of moulding pieces. Then the temperature control system using controllable silicon is explain in detail. This system adopts singlechip AT89C52 which acts as microcontroller. It can regulate the angle of double-direction controllable silicon and control voltage wave shape. So the virtual voltage of load can be changed and the calefaction power of calefaction stick can be controlled. Therefore the temperature can retain the enactment value. This system mainly consists of collection of data, disposal, output, communication of system and computer and communication of human and machine. This system has some advantages such as low cost, high precision and convenience realization.This system adopts blury PID control. The adoption of blury PID control can ceaselessly autoregulates basing initialized control rule, thus the controlled system will move to the initialized balance state.