【正文】 碼。3．外文文獻翻譯附于開題報告之后：第一部分為譯文，第二部分為外文文獻原文，譯文與原文均需單獨編制頁碼（底端居中）并注明出處。在粗糙的部分通過脫脂爐后,然后通過一個封閉的輸送帶進入水平連續(xù)燒結(jié)爐。同時，建立精確的數(shù)學模型和方法,及確定該模型的參數(shù)是困難的,這也無法有效的控制溫度。3 控制算法智能PID控制算法[5 6]是基于常規(guī)PID控制的控制算法，這種算法對對象具有延遲,時變和非線性系統(tǒng)的特點和在不同環(huán)節(jié)有不同的算法。如果積分環(huán)節(jié)太強大，它將使控制對象的動態(tài)性能變得很差，導致閉環(huán)系統(tǒng)不穩(wěn)定。規(guī)則3：IF︱︳ THEN =+ []+。主要參數(shù)如表1：表1 主要參數(shù)PID控制器的三個基本參數(shù)能通過PC端口在通訊地址中被直接讀取和寫，所以它的控制很方便。所以它應該在物質(zhì)情況和控制要求中進行折衷的選擇。它實現(xiàn)了通過編程在線設定PID參數(shù)和提高系統(tǒng)控制的精度。 hengzhang AbstractTo meet the demands of temperature control accuracy in continuously sintering furnace with multiple hearths, this system was constituted with PC, XMT624 and solid state relay for temperature field control. According to the characteristics of heating process, temperature inertia, lag of sintering furnace, adopted intelligent PID algorithm to achieve the largescale temperature adjustments, it overes the limitation of traditional PID control. Through online setting intelligent instrument unit realtimely, the system achieves the target of temperature control accuracy in 2?? per thousand centigrade. 1. IntroductionContinuous sintering furnace is a monly used heating equipment for metal powder injection molding parts, it bines degrease and sintering processes. After rough parts track the degrease furnace, and then taken into horizontal continuous sintering furnace through an enclosed conveyor belt. The degrease furnace and sintering furnace are separated by two furnace doors. The main part of which is divided into heating, sintering and cooling. The sintering quality of continuous sintering furnace depends on the uniformity of temperature and the stability of sintering process, and the temperature control system of continuous sintering furnace is abig lag, great inertia, timedependent, nonlinear plex system, the sintering temperature is also affected by external factors, such as furnace door switches, gas flows. Therefore, using the traditional control is unable to meet continuous sintering furnace temperature control demands [12]. In analog control system, PID control is the most mature technology, and the most extensive application [34]. But the algorithm has some limitation in sintering furnace temperature control system that has the characteristic of great inertia, pure delay, nonlinear, timevarying, and reflected in the furnace is excessive control and dynamic performance instability. For example, the oneway nature of heating up due to sintering furnace using filament resistance, cooling is relying on the natural environment, and if the temperature is high, it is difficult to cool down.It is difficult to establish precise mathematical method and determine the model parameters, and unable to control the temperature effectively. Computers and the development of intelligent control theory provide a new approach for the plex control and dynamic uncertainty systems. Using intelligent control technology promotes intelligent PID control.2. Control system frameThe temperature control system of multisegment continuous sintering furnace is mainly consisted of PC and XMT624 intelligent instrument, the executing agency is solidstate relay. The furnace is divided into three segments to control temperature, which means that each segment of the furnace has three temperature points. The frame of temperature control of