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升降式底线分线盘，使穿线更容易。The Looper Thread Take-up can make it up and down for threading easy.

进料支撑台，跳动辊，四点对中装置。Entry strip support table, looper roll and four-point centering device.

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弯针机构与成圈叉机构是暗缝缝纫机的两个重要机构。Bend needle mechanism and looper mechanism are two important mechanisms in blind stitching machine.

论述了从德国引进的新型的液压活套系统的工作原理和控制的实现方法。Describing working principle and method of new hydraulic looper control system supplied by Germany.

横切机组活套和最小板间距的计算方法。同时也介绍了活套的形成及控制过程。S. cross-cuting shear line, and the formation of the looper and its control process is also introduced.

给出了针对该特殊轧机所采用的活套高度及带钢张力的控制方案。The strategies of the looper height control and strip tension control of the specific mill are described.

调节的机理是通过改变活套电机电流和角度来调节精轧机架间的张力。The adjustment mechanism is inter-stand tension modifications through changing looper motor currents and angles.

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对首钢第一型材厂活套系统在调试和使用中稳定性、抗干扰性差、调节速度慢等问题进行了分析。This paper analyzed some problems of the looper system, such as bad stability and resistance to disturb, slow regulation.

连杆式送料机构，针杆挑线、弯针勾线形成双线链式线迹，线迹牢固且富有弹性。Connecting rod feeding mechanism, needle bar basting, looper hooking form parallel chain-stitch, which the stitch is firmelastic.

采用线性预测模型的BP神经网络PID控制策略以减弱系统的耦合影响，以提高控制效果。The control strategy of prediction for a linear model based on BP-PID was introduced to improve control effect and to decouple the looper system.

根据该厂情况，将活套系统与轧机可控硅系统的参数合理匹配，实现了无张力轧制。After the parameters of the looper system and silicon control system were matched reasonably with each other, the non-tension rolling was realized.

本文从恒张力控制的机理出发，详细阐述了活套转矩补偿算法和张力控制系统的实现。Based on constant tension control mechanism, this article detailedly expounds algorithm of looper torque compensation and realization of tension control.

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带钢在出口段经涂油、剪切、卷取后成为成品卷，成品卷被卸下、包装送去存储。The strip goes to exit part after exit looper for oiling, recoiling, cut into final coils. The final coils are discharged, packaged and delivered into storage.

本文根据CSP工艺的技术要求，研究分析了活套控制装置及控制系统，介绍了液压活套的结构和功能，以及自控原理。According to the CSP process requirement, the looper control device and control system including its structure, function and auto-control principle is researched.

基于液压活套在趋近带钢阶段的特殊控制要求，介绍一种非线性趋近控制器，分别就其数学模型、动态特性进行了描述和分析，并介绍了其硬件、软件的实现过程。A certain nonlinear approach controller is introduced to meet the requirement of a special control in the process when a hydraulic looper is approaching strip steel.

通过对活套高度和张力控制模型的再认识，结合专家知识和实践经验提出理想活套控制特性。Through re-understanding of looper height and tension control model, combined with expert knowledge and project practice, ideal control characteristic of looper was presented.

将该解耦方法应用于热连轧高度和张力控制系统，仿真结果表明可获得良好的解耦效果和控制特性。The method is applied to the looper height and tension control of hot strip mill. Simulation result proves effectiveness of the method in both decoupling effect and control performance.

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通过对带钢张力矩计算理论公式的分析并结合工程实际，提出了一种采用多项式逼近来拟合活套张力矩非线性曲线的方法。A kind of method adopting polynomial approaches to match the nonlinear curve of looper tension moment is put forward on the base of analyses of the curve characteristic and project practice.

该机采用箱式主体，针杆挑线、勾针勾线、齿盘送料，并装有自动润滑装置，是有关行业高速、高效毛皮拼缝缝纫机。This machine adopts box-type frame, needle take-up, looper staff, teeth, cup feed mechanism as well as auto lubrication equipment, it is really a high speed and high capactiy fur sewing machine.

全连续冷连轧机的自动速度控制系统要求通过活套分离开卷运行过程和轧制运行过程以实现全连续轧制。Automatic velocity control system for the continuous tandem cold mill let the rolling mill work continuously by using the looper to keep the uncoiling operation separating from the rolling process.