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本文运用自控原理对送经液压系统进行了张力自调的动态特性分析,先列出了该系统的张力控制员反馈回路方块图,接着确定了液压系统的方块图,传递函数及其幅频特性曲线.在确定了后梁系统及上机弹性系统的刚性系数后作者列出了整个系统的方块图及其传递函数,并作出了系统的幅频特性曲线.由此可看出该系统是由一个放大因子(K),和一个积分因子(1/S)及一个二阶振荡环节所组成.本文对该系统的稳定性,相对稳定性及系统的正确性都进行了讨论,还对液压系统的合理选配参变数也进行了分析,此自控分析方法可以适用于任何送经张力控制系统.
In this paper, the dynamic characteristics of tensioned self-adjusting hydraulic system are analyzed by using self-control principle. The block diagram of tension controller feedback loop of the system is listed first. Then the block diagram, transfer function and amplitude-frequency characteristic of hydraulic system are confirmed Curve.After determining the stiffness coefficient of the back beam system and the upper machine elastic system, the author lists the block diagram of the entire system and its transfer function, and made the amplitude-frequency characteristic curve of the system.Thus it can be seen that the system is composed of a Enlargement factor (K), integral factor (1 / S) and a second-order oscillation component.In this paper, the stability, relative stability and the correctness of the system are discussed in this paper, but also on the hydraulic system Reasonable matching parameters are also analyzed, this automatic control method can be applied to any send tension control system.