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作 者:徐桂敏 李莎 XU Gui-min;LI Sha(School of Physics and Mechanical&Electrical Engineering,Hubei University of Education,Wuhan 430205,China)
机构地区:[1]湖北第二师范学院物理与机电工程学院,武汉430205
出 处:《湖北第二师范学院学报》2022年第8期17-22,共6页Journal of Hubei University of Education
基 金:湖北第二师范学院教学研究项目“一流课程建设背景下应用型本科院校电子专业课程群教学改革和实践”(X2021002)。
摘 要:根据PLC课程和职业技能资格考证实训要求,开展创新型和综合性实践教学。因交流电机在生产生活中应用更为广泛,且实验室和实验设备经过改造升级,继完成“基于PLC的直流电机柔性调速综合实验设计”后,设计了由两台PLC结合高速计数器、变频器和编码器实现交流电机的调速和测速拓展综合实训。其中一台PLC控制变频器实现交流电机调速,另一台PLC控制高速计数器接收编码器脉冲并计算交流电机转速,从而达到对交流电机柔性调速和准确测速的目的。通过实训,学生巩固和拓展了课堂知识,促进了对新设备、新知识的连续性学习,激发了学习兴趣,提高了教学质量。Innovative and comprehensive practice teaching is carried out according to the PLC course and vocational qualification training requirements. AC motor is widely used in production and life, and the laboratory and experimental equipment is upgraded. Therefore, after design of flexible speed control of DC motor based on PLC, two PLCs combined with high-speed counter, frequency converter and encoder are designed for comprehensive training of speed control and speed measurement of AC motor. One PLC controls the frequency converter to control AC motor speed, and the other PLC controls the high-speed counter to receive the encoder pulse and calculate the speed of the AC motor, so as to achieve flexible speed regulation and accurate speed measurement of the AC motor. Through practical training, students consolidate and expand the classroom knowledge, promote the learning of new equipment and new knowledge, and become interested in learning, and the quality of teaching is improved.
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