摘要
瞬变压力检测系统有较宽的通频带,使得先验知识未知的噪声容易混入系统,所以消除噪声对于准确及时地检测工程设备中的压力突变极为重要.介绍了LMS算法和自适应消除噪声的原理,基于LMS算法设计出了用于瞬变压力检测系统噪声的自适应滤波器.仿真结果表明,所设计的方法可以在缺少噪声先验知识的情况下有效地消除噪声干扰.
Transient pressure monitoring system has a wide pass band, so the system is mixed easily with noises about which there is little prior knowledge. Eliminating the noise is extremely important for the accurate and timely detection. This paper describes least mean square LMS algorithm and the adaptive principle of eliminating noise. An adaptive filter for eliminating the noise based on LMS algorithm is designed. The simulation results show that the method can effectively eliminates noise without little or no prior knowledge of the noise.
出处
《河南工程学院学报（自然科学版）》
2012年第1期51-53,共3页
Journal of Henan University of Engineering：Natural Science Edition
