【導(dǎo)讀】印機(jī)等辦公自動(dòng)化設(shè)備以及各種控制裝置等眾多領(lǐng)域有著極其廣泛的應(yīng)用。應(yīng)的按鍵實(shí)現(xiàn)以上功能，并且步進(jìn)電機(jī)的工作狀態(tài)要用相應(yīng)的發(fā)光二極管顯示出來。硬件進(jìn)行了調(diào)試，同時(shí)介紹了調(diào)試過程中出現(xiàn)的問題以及解決問題的方法。有思路明確、可靠性高、穩(wěn)定性強(qiáng)等特點(diǎn)，通過調(diào)試實(shí)現(xiàn)了上述功能。課題研究的目的和意義··························································2. 國內(nèi)外研究概況·······································&#

　　

【正文】 MOV R1,20H MOV IE,10000001B CLR QIAN CLR HOU CLR JIA CLR JIAN CLR TING MOV A,@R1 MOV R2,A SETB IT0 ////邊沿觸發(fā)形式 第 35 頁 共 43 頁 LOOP1:JNB QIAN ,LOOP2 ACALL FRONT1 LOOP2:JNB HOU,LOOP1 ACALL BACK1 DUAN: MOV A,P0 CPL A ANL A,1FH ///去高三位，使按下去的一位為 1 CJNE A,00H,CHA AJMP DUAN CHA: ACALL DELAY10MS MOV A,P0 CPL A ANL A,1FH JZ DUAN ///為零轉(zhuǎn)移 ACALL ZHAO RETI ZHAO:MOV A,P0 //查找是哪一位，下面置 1 JNB ,FRONT JNB ,BACK JNB ,FAST JNB ,SLOW JNB ,STOP FRONT:SETB QIAN RET BACK: SETB HOU RET FAST: SETB JIA RET SLOW: SETB JIAN RET 第 36 頁 共 43 頁 STOP: SETB TING RET FRONT1:CLR QIAN CLR HOU CLR JIA CLR JIAN CLR TING INC R0 ///前進(jìn)子程序 R0 用于給 P2 口送不同 的值 MOV P2,@R0 MOV A,@R1 MOV R2,A /// R2 用于延時(shí)不同的時(shí)間 ACALL DELAY CJNE R0,17H,XIA MOV R0,10H XIA: JB QIAN,HUI //回主程序 ////////XIA 子程序用于過度 JB HOU, HUI JB TING,HUI JNB JIA,XIA1 ACALL JIA1 XIA1: JNB JIAN,XIA2 ///XIA 子程序用于過度 ACALL JIAN1 JB TING ,HUI XIA2: AJMP FRONT1 HUI : RET //返回主程序 JIA1: CJNE R1,25H,XIA3 /// 加速 RET XIA3: INC R1 RET BACK1: CLR QIAN //后退 第 37 頁 共 43 頁 CLR HOU CLR JIA CLR JIAN CLR TING CJNE R0,0FH ,XIA8 MOV R0,17H XIA8: DEC R0 MOV P2,@R0 MOV A,@R1 MOV R2,A ACALL DELAY CJNE R0,10H,XIA5 MOV R0,17H XIA5: JB QIAN,HUI JB TING,HUI JB HOU ,HUI JNB JIA, XIA6 ACALL JIA1 XIA6: JNB JIAN,XIA7 ACALL JIAN1 XIA7: AJMP BACK1 JIAN1: CJNE R1,20H,XIA4 //減速 RET XIA4: DEC R1 RET DELAY10MS: MOV R3,20 D1: MOV R4,250 DJNZ R4,$ DJNZ R3,D1 第 38 頁 共 43 頁 RET DELAY: MOV R5,50 //根據(jù) r2 的狀態(tài)調(diào)整 步進(jìn)電機(jī)的每一步的時(shí)間 D2: MOV R6,150 D3: DJNZ R6,$ DJNZ R5,D2 DJNZ R2,DELAY RET END 附錄 2： 英文資料及其中文翻譯 Stepper motor is an electrical pulse will be converted into angular displacement of the implementing agencies. Put it in simple languagespeaking: When the stepper drive pulse signal to a receiver, it drives stepper motor rotation direction by setting a fixed point of view (and the step angle). You can control the number of pulses to control the amount of angular displacement, so as to achieve the purpose of accurate positioning。 At the same time, you can by controlling the pulse frequency to control the motor rotation speed and acceleration, so as to achieve the purpose of speed. Stepper motor directly from the ACDC power supply, and must use special equipment stepper motor drive. Stepper motor drive system performance, in addition to their own performance with the motor on the outside, but also to a large extent depend on the drive is good or bad. A typical stepper motor drive system is operated by the stepper 第 39 頁 共 43 頁 motor controller, stepper motor drives and stepper motor body is posed of three parts. Stepper motor controller stepper pulse and direction signal, each made of a pulse, stepper motordriven stepper motor drives a rotor rotating step angle, that is, stepbystep further. High or low speed stepper motor, or speed, or deceleration, start or stop pulses are entirely dependent on whether the level or frequency. Decide the direction of the signal controller stepper motor clockwise or counterclockwise rotation. Typically, the stepper motor drive circuit from the logic control, power driver circuit, protection circuit and power ponents. Stepper motor drive controller, once received from the direction of the signal and step pulse, the control circuit on a predetermined way of the electrical powerphase stepper motor excitation windings of the conduction or cutoff signal. Control circuit output signal power is low, can not provide the necessary stepping motor output power, the need for power amplifier, which is stepper motor driven power drive part. Power stepper motor drive circuit to control the input current winding to form a space for rotating magic field excitation, the rotordriven movement. Protection circuit in the event of short circuit, overload, overheating, such as failure to stop the rapid drive and motor. Motor is usually for the permanent mag rotor, when the current flows through the stator windings, the stator windings produce a magic field vector. The magic field will lead to a rotor angle of rotation, making a pair of rotor and stator magic field direction of the magic field direction. When the stator rotating magic field vector from a different angle. Also as the rotor magic field to a point of view. An electrical pulse for each input, the motor rotation angle step. Its output and input of the angular displacement is proportional to the pulses, with pulse frequency proportional to speed. Power to change the order of winding, the electrical will be reversed. We can, therefore, control the pulse number, frequency and electrical power windings of each phase to control the order of rotation of stepper motor. Stepper motor types: Permanent mag (PM). Magic generally twophase stepper, torque and are smaller and generally stepping angle of degrees or 15 degrees。 put more wind for airconditioning. 第 40 頁 共 43 頁 Reactive (VR), the domestic general called BF, have a mon threephase reaction, step angle of degrees。 also have fivephase reaction. Noise, no torque has been set at a large number of out. Hybrid (HB), mon twophase hybrid, fivephase hybrid, threephase hybrid, fourphase hybrid, twophase can be mon with the fourphase drive, fivephase threephase must be used with their drives。 Twophase, fourphase hybrid step angle is degrees more than a small size, great distance, and low noise。 Fivephase hybrid stepping motor is generally , the motor step angle small, high resolution, but the plexity of drive circuits, wiring problems, such as the 5phase system of 10 lines. Threephase hybrid stepping motor step angle of degrees, but according to the use of degrees, the threephase hybrid stepping motor has a twophase mixed than the fivephase hybrid more pole will help electric folder symmetric angle, it can be more than twophase, fivephase high accuracy, the error even smaller, run more smoothly. Stepper motor to maintain torque: stepper motor power means no rotation, the stator locked rotor torque. It is a stepper motor, one of the most important parameters, usually in the lowspeed stepper motor torque at the time of close to maintain the torque. As the stepper motor output torque increases with the speed of constant attenuation, the output power also increases with the speed of change, so as to maintain torque on the stepper motor to measure the parameters of one of the most important. For example, when people say that the stepper motor , in the absence of special circumstances that means for maintaining the torque of the stepper motor . Precision stepper motors: stepper motor step angle accuracy of 35%, not cumulative. Start frequency of noload: the stepper motor in case of noload to the normal start of the pulse frequency, if the pulse frequency is higher than the value of motor does