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›› 2010, Vol. 10 ›› Issue (4): 650-654.

• 流动与传递 • 上一篇    下一篇

混沌转速搅拌混合及实验研究

楚树坡 周慎杰 栾德玉 刘孝贤   

  1. 山东省济南市山东大学机械工程学院 山东大学机械工程学院过控教研室 青岛科技大学机电工程学院 山东大学信息科学与工程学院
  • 收稿日期:2009-12-25 修回日期:2010-05-26 出版日期:2010-08-20 发布日期:2010-08-20
  • 通讯作者: 周慎杰

Chaotic-speed Stirring Mixing and Experiment

CHU Shu-po ZHOU Shen-jie, LUAN De-yu LIU Xiao-xian   

  1. School of Mechanical Engineering,Shandong University School of Mechanical Engineering，Shandong University School of Mechanical Engineering，Qingdao University of Science and Technology School of Information Science and Engineering,Shandong University
  • Received:2009-12-25 Revised:2010-05-26 Online:2010-08-20 Published:2010-08-20
  • Contact: ZHOU Shen-jie,

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被引次数

8

摘要： 将混沌映射与脉冲宽度调制(PWM)技术相结合，开发了一种混沌转速搅拌混合技术. 该技术基于一维逻辑斯蒂映射获得混沌数值序列，然后将该数值序列赋予PWM占空比，经全桥驱动电路转变成混沌电压信号，从而使搅拌轴驱动电机转速呈混沌状态. 采用酸碱中和脱色法对甘油溶液进行了搅拌混合实验研究. 结果表明，在最大转速相同的条件下，为使甘油溶液完全混合均匀，常规匀速搅拌需近9 min，而混沌转速搅拌仅需20 s，后者所用时间仅为前者的5%.

关键词: 混沌映射, 脉冲宽度调制, 混沌转速搅拌

Abstract: An effective approach of stirring mixing was developed by integrating chaotic mapping and pulse width modulation (PWM) scheme. The chaotic numerical sequence was gained from one-dimensional logistic mapping and then assigned to the PWM duty cycle. The chaotic PWM signal was, by a full bridge converter, transformed into the chaotic voltage which acted on a DC motor driving the agitator. Thus, the rotational speed of agitator was chaotic. Stirring mixing experiments were conducted utilizing the acid-alkali neutralization decolorization method, and glycerin was stirred. Experimental results with the same maximum speed revealed that conventional constant-speed agitation approximately needed 9 min to achieve complete homogeneity, whereas chaotic-speed agitation just needed 20 s to achieve the same homogeneity, 5% of the former.

Key words: chaotic mapping, pulse width modulation, chaotic-speed stirring

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