摘要
伯德图的绘制既是控制工程基础课程中的重点又是难点内容,学生不易理解掌握.根据多年教学经验,将高等数学分段函数思想应用在对数幅值曲线绘制中,降低了伯德图绘制的难度,便于学生理解掌握;同时又可利用分段表达式来求解剪切频率,分析闭环系统稳定性,使其更加便捷地应用于实际现场.
Drawing Bode diagram is important and difficult subject in basis of control engineering, but it isn＇t easy to be understood and mastered. Based on teaching experience, sectional function is used in drawing logarithm amplitude frequency characteristic curve. This method can reduce difficulty in drawing Bode diagram and is easier to be understood and mastered. Meanwhile it is useful to calculate cut off frequency and analysis system stability. And the method is more convenient to be applied to actual field.
出处
《高师理科学刊》
2016年第1期75-76,79,共3页
Journal of Science of Teachers＇College and University
关键词
伯德图
分段函数
剪切频率
稳定判据
Bode diagram
sectional function
cut off frequency
stability criteron
