摘要
结合课程知识点,采用555定时器、双D触发器、与非门、运算放大器实现m序列信号产生,二阶辨识系统通过运算放大器、电容、电阻设计,Multisim软件仿真验证了电路设计的正确性。利用Matlab软件对相关分析法辨识脉冲响应进行了仿真,验证了算法的有效性。利用电平抬升电路和STM32F103单片机、TFT屏构建了相关分析法辨识电路。实验测试表明:6阶m序列信号能正确激励二阶系统,硬件电路能实现脉冲响应曲线的辨识,辨识存在2%的误差。本实验可作为单片机原理及应用和数字信号处理课程综合设计和大学生电子设计竞赛实训实验。
In combination with the knowledge points of the curriculum and by using the 555 timer,dual D flip-flop,NAND gate and operational amplifier,the m sequence signal generation is realized.The two-order identification system is designed through the operational amplifier,capacitors and resistors.The Multisim software simulation verifies the correctness of the circuit design.The Matlab software is used to simulate the identification of impulse response with the correlation analysis,and the effectiveness of the algorithm is verified.The identification circuit with the correlation analysis is constructed by using the level lifting circuit,STM32 F103 SCM and TFT screen.The experimental test shows that the six-order m sequence signal can correctly stimulate the two-order system,and the hardware circuit can realize the identification of the impulse response curve and identify the error of 2%.This experiment can be used as a practical training experiment for the principle and application of the SCM,Digital Signal Processing course and electronic design contest for college students.
作者
刘恒
孙晋
邰凡彬
张易晨
Liu Heng;Sun Jin;Tai Fanbin;Zhang Yichen(College of Electronics and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044 , China)
出处
《实验技术与管理》
CAS
北大核心
2018年第5期53-59,共7页
Experimental Technology and Management
基金
江苏高校品牌专业建设工程资助项目(PPZY2015B134)
教育部产学合作协同育人项目(201701056050)
南京信息工程大学教学改革研究课题(2015年)
南京信息工程大学开放实验室项目(2016年)资助
关键词
m序列信号
相关分析法
系统辨识
脉冲响应
m sequence signal
correlation analysis
system identification
impulse response
