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本文根据工业燃煤锅炉运行特点,在分析其数学模型的基础上提出了锅炉燃烧的一种优化控制方案。较好地解决了要求蒸汽压力稳定与节煤之间的矛盾,具有一定的实用价值。 相似文献
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As a useful aggregation technique, the Bonferroni mean (BM) can capture the interrelationship between input arguments and has been a hot research topic recently. Based on the classic BM, many BM operators have been proposed and developed, such as the weighted BM, the generalized BM, the intuitionistic fuzzy BM, and so on. However, these BM operators are all based on the averaging mean, which is one of the basic aggregation approaches and focuses on the group opinion and another basic one is the geometric mean, which gives more importance to the individual opinions. To combine with the geometric mean and the BM, in this paper, we propose the geometric BM, the weighted geometric BM, and the generalized weighted geometric BM. These new geometric BMs can reflect the geometric interrelationship between the individual criterion and other criteria and keep the main advantage of BM. Furthermore, we investigate the geometric BMs under the intuitionistic fuzzy environment, which is more common phenomenon in modern life and develop three intuitionistic fuzzy geometric Bonferroni mean operators, i.e., the intuitionistic fuzzy geometric Bonferroni mean (IFGBM), the intuitionistic fuzzy weighted geometric Bonferroni mean (IFWGBM), and the intuitionistic fuzzy generalized weighted geometric Bonferroni mean (IFGWGBM) and study their desirable properties, such as idempotency, commutativity, monotonicity, and boundedness. Finally, on the basis of the IFWGBM and IFGWGBM operators, we propose an approach to multicriteria decision making under the intuitionistic fuzzy environment, and a practical example is provided to illustrate our results. 相似文献
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母管制煤粉锅炉燃烧系统存在严重非线性及强耦合问题且模型不易确定,使用传统控制方法效果不佳.针对这种情况提出采用模糊PID控制方案,并针对T-230-2型锅炉燃烧系统的特点和控制要求,设计了一种模糊PID控制器,并可在线调整模糊控制器输出的PID控制器参数,从而达到优化PID控制器参数的目的,实现对"非线性、强耦合"系统的控制要求.通过Matlab仿真,对母管压力的鲁棒性和抗扰性进行了分析.结果表明,该控制器具有更好的控制效果,能有效地克服扰动,提高了系统的动态特性. 相似文献
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大型风力发电机组是典型的多变量非线性系统,在控制回路中主要体现存变桨控制回路和力矩控制回路之间的耦合作用.传统的控制方式由于针对的是单变量的控制,没能考虑到同路之间的耦合作用,因此在实际的生产过程中并未能获得最优的控制效果,本文提出基于多变量模糊控制技术的高于额定风速的控制方法,在高于额定风速的情况下同时调节变桨控制器和力矩控制器,保证风力发电机组转速基本恒定在额定转速附近同时发电机输出功率也恒定在额定功率附近.这种控制方式考虑了回路的协调控制,通过模糊控制实现变量之间的解耦,并且不需要精确的数学模型即可产生非线性控制率,具有良好的动态控制性能.仿真证明了本文提出方法的有效性. 相似文献
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温度控制在工业控制中一直都是比较重要的课题,依据控制对象的不同,有着不同的控制方法。一般来说温度控制系统都具有大惯性和大延迟的特性,为实现它的控制带来一定的难题。在对电锅炉温度控制系统建立其数学模型的基础上,分别设计了PID和模糊PID控制器,并通过仿真实验验证了两种控制方法的有效性,分析了他们各自的优缺点。 相似文献