【摘要】 为了清除表面肌电信号(SEMG)夹杂的噪声,在分析了软阈值法、硬阈值法等常用阈值消噪方法的基础上,提出了一种改进阈值函数的新消噪方法。该阈值消噪方法结合了折中阈值方法与μ律绝对值阈值方法的优点,解决了阈值消噪连续性和恒定误差的问题。SEMG消噪实验结果表明,新消噪方法可取得较好的效果。更多还原

【Abstract】 Aiming at removing surface electromyography(SEMG) noise,a new-threshold de-noising method was put forward,based on analyzing soft-threshold de-noising method and hard-threshold de-noising method and so on.By modifying threshold function,the merits of middle course threshold de-noising method and μ rhythm threshold de-noising method were combined to the new threshold de-noising method,the problems of de-noising continuity and constant error were solved.The test results indicate that the new method can be more effective in de-noising SEMG noise.更多还原