Patent ID: 8091589
Filing Date: 2012-01-10
Classification: D03C,D03D

Abstract:
1. A loom comprising: a warp beam around which warps are wound; a feed motor rotating the warp beam in a direction feeding the warps; a heddle opening and closing the warps fed from the warp beam; a picking device inserting wefts into the openings of the warps formed by the heddle; a reed beating down the wefts inserted in the openings by the picking device; a pull-in roller pulling in a woven fabric beaten down by the reed and formed by the warps and the wefts; a pull-in motor rotating the pull-in roller in a direction pulling in the woven fabric; a detector detecting a tension of the warps between the warp beam and the pull-in roller; and a control device having an adaptive filter filtering the tension detected by the detector, and controlling the feed motor and the pull-in motor so that the tension of the warps becomes a predetermined target tension based on the tension filtered by the adaptive filter; wherein the adaptive filter includes: the filter part includes: the filter constant estimation part includes: the estimation filter part includes: the tap constant estimation part calculates the plurality of second filter coefficients so that the deviation becomes small; and the calculated plurality of second filter coefficients are set as the first filter coefficients in the filter part.