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基于S7-200高精度定量阀控制器的改进研究 |
Improvement of High-precision Quantitative Valve Controller Based on S7-200 |
收稿日期: |
DOI:10.11980/j.issn.0254-508X.2016.12.009 |
关键词: 高精度定量阀 恒频脉冲控制算法 梯形曲线算法 S形曲线算法 细分驱动技术 |
Key Words:high-precision quantitative valve constant frequency pulse control algorithm trapezoidal curve algorithm S curve algorithm subdivided driving technology |
基金项目:高精度定量控制执行器的研制(201311);陕西省重点科技创新团队计划项目(2014KCT-15)。 |
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摘要:分析定量阀结构和控制原理,将传统的恒频脉冲控制算法与梯形曲线算法、S形曲线算法进行了对比,选择用拟合S形曲线的算法控制定量阀。同时,为了有充足加减速过程,使用细分驱动技术,在不增加控制器硬件成本前提下,通过拟合7段S形曲线,最终实现了高精度定量阀的精密定位控制。 |
Abstract:This paper analyzed the structure and control principle of quantitative valve. After comparing the traditional constant frequency pulse control algorithm, with the trapezoidal curve algorithm, and S curve algorithm, fitting S curve algorithm was close to control the quantitative valve. At the same time, in order to have enough acceleration and deceleration process, the subdivided driving technology was applied, by fitting 7 segments S curve and without increasing hardware cost was realiged, the precision positioning control of high-precision quantitative valve was realized. |
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