改进的变步长自适应滤波器算法及其应用

Improved Step-length Adaptive Filter Algorithm and Application

针对传统的自适应滤波器算法步长变化和收敛精度之间的矛盾,及抗干扰能力差的问题,提出了改进的LMS算法,并运用MATLAB对这一算法进行实例分析研究,试验测试结果表明:改进的LMS算法应用到矿井提升机故障诊断中,在解决步长变换和收敛精度之间矛盾的基础上,也提高了抗干扰能力。

In view of the contradiction between the change of step length and the convergence precision of the traditional adaptive filter algorithm and the problem of poor anti-interference ability,an improved LMS algorithm is proposed. And the application of MATLAB to this algorithm is analyzed and analyzed.The test results show that the improved LMS algorithm has been applied to the fault diagnosis of the mine hoist. On the basis of solving the contradiction between the step size transformation and the convergence precision, the anti-interference ability is also improved.