A new optimizing framework of process operation is proposed to deal with optimizing op- eration of continuous stirred tank reactor (CSTR). The optimization framework includes two layers: the first layer, necessary ...A new optimizing framework of process operation is proposed to deal with optimizing op- eration of continuous stirred tank reactor (CSTR). The optimization framework includes two layers: the first layer, necessary condition of optimally (NCO) tracking controller, calculates the optimal set-point of the process; and the second layer, output neighboring-extremal controller, calculates the input values of the controlled plant. The algorithm design and convergent analysis of output neighboring-extremal controller are discussed emphatically, and in the case of existing parametric uncertainty, the approach is shown to converge to the optimum atmost in two iterations. At last the approach is illustrated by simulation results for a dynamic CSTR.展开更多
为提高空气源热泵系统变工况条件下的运行效率,提出一种宽工况优化控制策略。基于函数权重单输入模块连接模糊系统(FWSIRM-FIS)建立空气源热泵变工况稳态能效分析模型,获取热泵机组的变工况能效曲面并解算得到最优工作区间;在此基础上,...为提高空气源热泵系统变工况条件下的运行效率,提出一种宽工况优化控制策略。基于函数权重单输入模块连接模糊系统(FWSIRM-FIS)建立空气源热泵变工况稳态能效分析模型,获取热泵机组的变工况能效曲面并解算得到最优工作区间;在此基础上,基于室外气象温度及预测平均评价(predicted mean vote,PMV)参数,建立主观热舒适度评价指标;最后,选取压缩机转速和冷冻水流量作为决策变量,以日总能耗最低为优化目标,建立系统优化模型,引入惩罚函数约束每小时用能舒适度,制定兼顾舒适度与节能指标的热泵机组变工况优化运行策略。实验结果表明,利用变频调速技术,在用热舒适度弹性范围内可有效降低系统功耗,提高用能效率。展开更多
轮毂电机电动汽车(in-wheel motor electric vehicle,IWM-EV)的电机激励与车辆系统的耦合特性严重的恶化车辆的动力学性能以及电机的工作稳定性,针对这种振动负效应问题,建立了考虑机电耦合的车辆动力学耦合模型,并设计了工况识别的主...轮毂电机电动汽车(in-wheel motor electric vehicle,IWM-EV)的电机激励与车辆系统的耦合特性严重的恶化车辆的动力学性能以及电机的工作稳定性,针对这种振动负效应问题,建立了考虑机电耦合的车辆动力学耦合模型,并设计了工况识别的主动悬架多目标粒子群(multi-objective particle swarm optimization,MOPSO)模糊滑模控制器。基于傅里叶级数法建立了轮毂电机的垂向不平衡激励与电机转矩的电机模型;将电机模型与车辆动力学模型结合建立了电机与悬架联合的垂向-驱动非线性动力学耦合模型。基于耦合模型分析了车辆的机电耦合振动负效应特性,针对模型强非线性的特点,设计了耦合模型的非线性控制器。仿真结果表明,控制器能既能有效的减小电机的相对偏心率,抑制电机不平衡电磁力,又能提升车辆动力学性能,有效的抑制了轮毂电机电动汽车的振动负效应。展开更多
文摘A new optimizing framework of process operation is proposed to deal with optimizing op- eration of continuous stirred tank reactor (CSTR). The optimization framework includes two layers: the first layer, necessary condition of optimally (NCO) tracking controller, calculates the optimal set-point of the process; and the second layer, output neighboring-extremal controller, calculates the input values of the controlled plant. The algorithm design and convergent analysis of output neighboring-extremal controller are discussed emphatically, and in the case of existing parametric uncertainty, the approach is shown to converge to the optimum atmost in two iterations. At last the approach is illustrated by simulation results for a dynamic CSTR.
文摘为提高空气源热泵系统变工况条件下的运行效率,提出一种宽工况优化控制策略。基于函数权重单输入模块连接模糊系统(FWSIRM-FIS)建立空气源热泵变工况稳态能效分析模型,获取热泵机组的变工况能效曲面并解算得到最优工作区间;在此基础上,基于室外气象温度及预测平均评价(predicted mean vote,PMV)参数,建立主观热舒适度评价指标;最后,选取压缩机转速和冷冻水流量作为决策变量,以日总能耗最低为优化目标,建立系统优化模型,引入惩罚函数约束每小时用能舒适度,制定兼顾舒适度与节能指标的热泵机组变工况优化运行策略。实验结果表明,利用变频调速技术,在用热舒适度弹性范围内可有效降低系统功耗,提高用能效率。
文摘轮毂电机电动汽车(in-wheel motor electric vehicle,IWM-EV)的电机激励与车辆系统的耦合特性严重的恶化车辆的动力学性能以及电机的工作稳定性,针对这种振动负效应问题,建立了考虑机电耦合的车辆动力学耦合模型,并设计了工况识别的主动悬架多目标粒子群(multi-objective particle swarm optimization,MOPSO)模糊滑模控制器。基于傅里叶级数法建立了轮毂电机的垂向不平衡激励与电机转矩的电机模型;将电机模型与车辆动力学模型结合建立了电机与悬架联合的垂向-驱动非线性动力学耦合模型。基于耦合模型分析了车辆的机电耦合振动负效应特性,针对模型强非线性的特点,设计了耦合模型的非线性控制器。仿真结果表明,控制器能既能有效的减小电机的相对偏心率,抑制电机不平衡电磁力,又能提升车辆动力学性能,有效的抑制了轮毂电机电动汽车的振动负效应。