外文翻譯---電梯定位控制系統(tǒng)模型的設(shè)計-在線瀏覽
2025-03-07 14:58本頁面
【正文】 ch of the new elevator control technologies. It has a certain reference in relevant professional experiments teaching. It can be chosen as a teaching model for university teachers when they instruct stepper motor’s drive and control. In addition, the model has a certain value for research and development of highrise elevator control software.2. SYSTEM STRUCTURE AND WORKING PRINCIPLEThe basic structure diagram of the elevator positioning control system model is shown in Figure 2. The model includes MCU control module, stepper motor drive module, infrared detection module, LCD module and keys module. The elevator’s running path is set up by keys。附錄1 文獻翻譯A Design of Elevator Positioning Control System ModelZhang Yajun, Chen Long, Fan LingyanSchool of Electronics amp。 Information，Hangzhou Dianzi UniversityHangzhou, Zhejiang, 310018The People’s Republic of Chinazyj16888ABSTRCTThis paper presents a design of elevator positioning control system model based on the ATmega128 microcontroller. The model mainly includes MCU control module, stepper motor drive module, infrared detection module, LCD display module and keys module. The elevator’s running path is set by keys。 the realtime information of the elevator’s location is detected by infrared detection circuits and is fed back to the MCU. The speed and direction of the stepper motor are controlled by MCU inputting timing pulse signals to its drive chip L298(internal circuits are Hbridge drive circuits).The elevator stops when the information input by the key and the feedback signals of the infrared detection circuits are the same and the elevator’s realtime running status is displayed by the LCD1602.3. SYSTEM HARDWARE DESIGN Stepper motor drive module designStepper motor drive circuit is shown in Figure 3. L298 integrated chip’s input ports connect with the system MCU I/O ports and its output ports connect with the signal input ports of twophase four wires stepper motor. MCU I/O ports output certain timing pulse signals to drive chip to control its outputs, which makes the stepper motor rotate positively or reversely. Stepper motor rotational speed is directly proportional to the frequency of input pulse, which means the higher frequency of the input pulse, the faster stepper motor rotate speed, and vice versa. The internal circuits of L298 chip are Hbridge driver circuits, as shown in Figure 4. VD1, VD2, VD3, VD4 are continued flow diodes for protecting the drive circu
法律信息相關(guān)推薦
鄂ICP備17016276號-1