簇绒地毯织机横移机构的谐振抑制

针对簇绒地毯织机高速运行时横移机构易出现机械谐振，影响横移系统快速响应和稳定性的问题，在对横移传动机构进行理论建模的基础上设计了校正补偿装置。首先根据横移传动系统的阶跃响应情况，采用双T型陷波滤波器消除了横移传动系统的机械谐振点。然后使用预变形双线性逼近法对陷波滤波器进行离散化处理，并且与零阶保持器和一阶保持器等离散算法进行了实验对比。结果表明，双T 型滤波器有效地消除了横移机构高速运行时产生的机械谐振，而且在频域特性方面，采用预变形逼近法设计的离散陷波滤波器可获得比零阶和一阶保持器更加准确的逼近效果。

Resonance suppression strategy of shogging mechanism in tufting carpet loom

Aiming at the problem that the mechanical resonance which influenced the responsiveness and stability of the shogging mechanism was easily induced during the high speed operation of the shogging mechanism on tufting carpet loom,the paper designed the compensation device based on a theoretical model of the shogging mechanism.Firstly,the paper adopted a double T type notch filter to eliminate mechanical resonance points of the shogging driving system,based on the s step response.And then the paper used the Tustin prestressing bilinear approximation method to perform discretization on the notch filter,and compared with the discretization algorithms such as a zero order holder and a first order holder.The results show that the double T type notch filter can well inhibit the mechanical resonance during high speed operation of the shogging mechanism,and the discrete notch filter designed by the Tustin prestressing bilinear approximation method can achieve more accurate approximation effect of the frequency domain characteristics than the zero order holder and the first order holder.