【正文】 se high_time=100。 low_time= (100high_time)。 } } else if(set_temper=temper) { if(temperset_temper0) { high_time=0。 low_time=100。 } else { for(i=0。i10。i++) { get_temper()。 rin = s。 //讀取輸入rout = PIDCalc ( amp。spid,rin )。 // Perform PID Interation } if (high_time100) high_time=(unsigned char)(rout/10000)。 else high_time=0。 low_time= (100high_time)。 } } // else // {} }顯示程序void display_tempmain(unsigned char i) //主程序溫度顯示函數(shù){Unsigned char tab[]={0x3f,0x30,0x6d,0x79,0x72,0x5b,0x5f,0x31,0x7f,0x7b,0x40}。 P0=tab[i/10]。 WE2=0。 WE1=1。 delay(1000)。 P0=tab[i%10]。 WE2=1。 WE1=0。 }主程序include include include includestruct PID spid。 // PID Control Structure unsigned int rout。 // PID Response (Output) unsigned int rin。 // PID Feedback (Input) sbit plus=P2^0。 sbit subs=P2^1。 sbit stop=P2^2。sbit WE1=P2^4。sbit WE2=P2^5。sbit WE3=P2^6。sbit WE4=P2^7。sbit output=P3^4。 sbit DQ=P3^7。 unsigned char flag,flag_1=0。 unsigned char high_time,low_time,count=0。//占空比調(diào)節(jié)參數(shù) unsigned char set_temper=37。 unsigned char temper。 unsigned char i。 unsigned char j=0。 unsigned int s。main() { unsigned char z。 unsigned char a,b,flag_2=1,count1=0。 unsigned char phil[]={2,0xce,0x6e,0x60,0x1c,2}。 TMOD=0x21。 TH0=0x2f。 TL0=0x40。 SCON=0x50。 PCON=0x00。 TH1=0xfd。 TL1=0xfd。 PS=1。 EA=1。 //打開CPU總中斷請(qǐng)求EX1=0。 ET0=1。 ES=1。 TR0=1。 TR1=1。 high_time=50。 low_time=50。 PIDInit ( amp。spid )。 // Initialize Structure = 0。 // 設(shè)置 PID 參數(shù) = 0。 =0。 = 100。 // Set PID Setpoint 設(shè)定值while(1) { if(plus==0) { EA=0。 for(a=0。a5。a++) for(b=0。b102。b++){} if(plus==0) { set_temper++。 flag=0。 } } else if(subs==0) { for(a=0。a5。a++) for(b=0。a102。b++){} if(subs==0) { set_temper。 flag=0。 } } else if(stop==0) { for(a=0。a5。a++) for(b=0。b102。b++){} if(stop==0) { flag=0。 break。 } EA=1。 } get_temper()。 b=temper。 if(flag_2==1) a=b。 if((abs(ab))5) temper=a。 else temper=b。 a=temper。 flag_2=0。 if(++count130) { display()。 count1=0。 } pare_temper()。 } TR0=0。 z=1。 while(1) { EA=0。 if(stop==0) { for(a=0。a5。a++) for(b=0。b102。b++){} if(stop==0) disp_1(phil)。 // break。 } EA=1。 } }翻譯部分英文原文2012 International Conference on Computer Science and Electronics EngineeringThermoelectric Heat Pump Drying Temperature Control System on the Basis of 89C51 Peng Lei School of Electronic and Information Engineering Jinggangshan University ji’an, Jiangxi, China 343009 penglei@ Xiao Ying school of Electronic and Information Engineering Jinggangshan Universityji’an, Jiangxi, China 343009mengya11@Abstract—For the thermoelectric heat pump drying temperature control problems of nonlinear, considerable inertia and long time delay, etc., design a kind of sectional type temperature control system which is based on fuzzy control. To validate temperature system control performance, the improvement based on the analysis of traditional fuzzy control technology, conducted fuzzy piecewise type control experiment for resistance furnace based on conventional fuzzy control and interpolation algorithm. The results indicate that, parison with conventional fuzzy control, based on the location of the interpolation algorithm of control algorithm can realize multichannel and sectional type temperature control, which can effectively restrain the pure time delay of control system of the influence, and which has the advantages of small overshoot, high precision and good stability, etc.Keywords:Thermoelectric Heat Pump Drying。Single Chip Microputer(SCM)。Temperature ControlI. INTRODUCTIONWith the rapid development of thermoelectric refrigeration technology, thermoelectric equipments of application in refrigeration, generate electricity and heat sensor area receives more and more public attention. For the requirements of temperature control system in thermoelectric heat pump drying temperature control system, it mainly to guarantee the temperature curve change by the regulation, small overshoot or no overshoot, good stability and nonoscillatory. The general temperature control system is a large time delay system, pure time delay can cause system instability or system feedback performance drop. If the pensation was introduced on the basis of conventional correction link, then it could be controlling the object without pure time delay which has been simplified from the object with pure time delay.II. CONTROL PRINCIPLEAccording to the principle of temperature control environment structure and general thermodynamics, it can get the following transfer function of the controlled object, the approximate expression as:GGp (s) in formula (1) is the part without pure time delay of controlled object. It can be considered as a first order inertial loop with pure time delay. According to temperature control environment，we set related actual parameters in function (1) as T = 16s, k0 =,τ =. The general temperature control system adopt the method as shown in figure1, Gc (s) indicates designed controller, F is a controller DC ponent and interference. The closed loop transfer function is Because of there are e?τs items in the characteristic equation , which is extremely adverse to the stability of the control system, ifτ large enough, the system will be very difficult to stability. And due to the system contains pure time delay link, which makes the controller design beeComplicated. To efficaciously overe the impact from pure time delay,if pensation was introduced in advance on the basis of conventional positive link, and its control structure as shown in figure2 which is the part of dotted line box. The essence of this method is that the actual object in parallel with a model , therefore,