不确定信息的数字滤波器设计及应用  

Design of unascertained information digital filter and its application

作　　者：罗中良[1] 高潮[1] 王方连[1] 官峰[1] 施仁[2] 

机构地区：[1]佛山科学技术学院自动化系,广东佛山528000 [2]西安交通大学自动控制系,陕西西安710049

出　　处：《传感器技术》2002年第5期24-26,共3页Journal of Transducer Technology

摘　　要：基于传统数字滤波的低通特性 ,存在快速跟踪能力和抗干扰能力之间的矛盾 ,且对突发干扰和测量真值的变动缺乏处理能力。在统计意义下定义不确定信息的支持区间和支持概率后 ,给出了一种特别适合智能仪表的数字滤波算法 ,并通过数据测试分析得出此算法抗干扰能力和快速跟踪能力较优 ,表明其正确、有效。Due to the low-pass property of traditional digital filter,a contradiction between fast tracing ability and anti-interference ability is generated,and the traditional way also lacks the ability of handling abrupt disturbance as well as variation of measuring true value.After defining the support interval and support probability of unascertained information from a statistical view,a digital filter algorithm that quite suits intelligent instruments is brought up.Some data test,show that this algorithm excels in both anti-interference and fast tracing, which reflects its correctness and efficiency.

关 键 词：数字滤波器 不确定信息 电路设计 

分 类 号：TN713.7[电子电信—电路与系统]