To better meet the needs of crop growth and achieve energy savings and efficiency enhancements,constructing a reliable environmental model to optimize greenhouse decision parameters is an important problem to be solve...To better meet the needs of crop growth and achieve energy savings and efficiency enhancements,constructing a reliable environmental model to optimize greenhouse decision parameters is an important problem to be solved.In this work,a radial-basis function(RBF)neural network was used to mine the potential changes of a greenhouse environment,a temperature error model was established,a multi-objective optimization function of energy consumption was constructed and the corresponding decision parameters were optimized by using a non-dominated sorting genetic algorithm with an elite strategy(NSGA-Ⅱ).The simulation results showed that RBF could clarify the nonlinear relationship among the greenhouse environment variables and decision parameters and the greenhouse temperature.The NSGA-Ⅱ could well search for the Pareto solution for the objective functions.The experimental results showed that after 40 min of combined control of sunshades and sprays,the temperature was reduced from 31℃to 25℃,and the power consumption was 0.5 MJ.Compared with tire three days of July 24,July 25 and July 26,2017,the energy consumption of the controlled production greenhouse was reduced by 37.5%,9.1%and 28.5%,respectively.展开更多
针对指挥控制(command and control,C2)组织的平台资源动态调度问题,对战场上的突发事件进行了分析,针对平台损毁和任务增加两种突发事件,构建了以最大化任务完成质量和最小化计划调整代价为优化目标的数学模型,并基于非支配排序遗传算...针对指挥控制(command and control,C2)组织的平台资源动态调度问题,对战场上的突发事件进行了分析,针对平台损毁和任务增加两种突发事件,构建了以最大化任务完成质量和最小化计划调整代价为优化目标的数学模型,并基于非支配排序遗传算法设计了多目标优化模型的求解方法。仿真实验表明,所构建的C2组织平台资源动态调度模型及求解方法能够有效应对战场上的突发事件,能够为决策者提供多个有效的平台资源动态调度方案。展开更多
基金Supported by the National"Thirteenth Five-year Plan"National Key Program(2016YFD0701301)the Heilongjiang Provincial Achievement Transformation Fund Project(NB08B-011)。
文摘To better meet the needs of crop growth and achieve energy savings and efficiency enhancements,constructing a reliable environmental model to optimize greenhouse decision parameters is an important problem to be solved.In this work,a radial-basis function(RBF)neural network was used to mine the potential changes of a greenhouse environment,a temperature error model was established,a multi-objective optimization function of energy consumption was constructed and the corresponding decision parameters were optimized by using a non-dominated sorting genetic algorithm with an elite strategy(NSGA-Ⅱ).The simulation results showed that RBF could clarify the nonlinear relationship among the greenhouse environment variables and decision parameters and the greenhouse temperature.The NSGA-Ⅱ could well search for the Pareto solution for the objective functions.The experimental results showed that after 40 min of combined control of sunshades and sprays,the temperature was reduced from 31℃to 25℃,and the power consumption was 0.5 MJ.Compared with tire three days of July 24,July 25 and July 26,2017,the energy consumption of the controlled production greenhouse was reduced by 37.5%,9.1%and 28.5%,respectively.
文摘针对指挥控制(command and control,C2)组织的平台资源动态调度问题,对战场上的突发事件进行了分析,针对平台损毁和任务增加两种突发事件,构建了以最大化任务完成质量和最小化计划调整代价为优化目标的数学模型,并基于非支配排序遗传算法设计了多目标优化模型的求解方法。仿真实验表明,所构建的C2组织平台资源动态调度模型及求解方法能够有效应对战场上的突发事件,能够为决策者提供多个有效的平台资源动态调度方案。
