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, nonlinear, and the uncertainty of the hydraulic roll bending control system, a hydraulic roll bending control system based on PIDNN (PID neural network) optimized by GA (genetic algorithm) was proposed...); genetic algorithm; BP algorithm 板形是板带钢的重要质量指标,板形控制是板带轧机的关键技术.建立稳定,精确,快速的板形控制模型已成为板形控制技术发展的迫切要求[1].在板形控制系统中,液压弯辊控制是影响板形二次分量的主要因素[2],液压弯辊力响应的快速性和精准性对整个板形控制系统的性能起着至关重要的作用.现阶段液压弯辊控制系统多采用常规的PID控制算法,但是实际系统具有......
by weighting factors, this work applies an improved non-dominated sorting genetic algorithm II (NSGA II) to solve it directly by means of optimizing multi-objective functions simultaneously. In the improved... to design homing trajectory of parafoil system. Key words: parafoil system; homing trajectory planning; multi-objective optimization; non-dominated sorting genetic algorithm (NSGA); non-uniform b-spline 1......
类号:TG 111 文献标识码:A Genetic algorithm simulation of normal grain growth ZHANG Gen-yuan, XU Mai-li, WEN Fang, CHEN Hong-lian (College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022, China) Abstract: The genetic algorithm method was introduced in the simulation process of grain growth. Genetic rules and fitness functions were used......
神经网络和遗传算法在Assel轧机辊型设计中的应用陈希1,肖晋为1,王玉峰1,钟锡弟2(1.天津市天津科技大学 计算机科学与信息工程学院2.天津钢管集团股份有限公司)摘 要:为了在引进的Assel轧机上拓宽产品规格,满足市场需求,提出了一种Assel轧机辊型设计的方法.首先利用遗传神经网络建立模型,推理出轧制每种规格管材的喂入角和辗轧角,然后利用德国M eer公司辊型设计公式计算轧制每种规格管材的Assel轧辊特征参数,最后采用最小包容区域法和遗传算法进行参数寻优,确定一种Assel轧机辊型的特征参数.采用上述......
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this problem[2-13]. Genetic algorithm (GA) is one of the most popular algorithms applied to QMR problem[5-8]. In Ref.[7], a multicast tree is produced by the means of finding the paths from the source... operation easy to realize. However, the GA algorithm adopted needs a long time to converge. A heuristic genetic algorithm for bandwidth-delay-constrained least-cost multicast routing problem has been proposed......
Ti-13Nb-13Zr alloy was conducted by an improved intelligent algorithm, GA-SVR, the combination of genetic algorithm (GA) and support vector regression (SVR). The GA-SVR model learns from a training dataset... regression; genetic algorithm 1 Introduction Ti-13Nb-13Zr titanium alloy is a widely applied biomedical alloy due to the advantages of low elastic modulus, high strength, excellent corrosion resistance......
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electricity tariffs; hot rolling batch scheduling; economic load dispatch; genetic algorithm 电力成本居高不下,节能降耗成为高耗能企业生产过程亟需解决的问题.智能电网需求响应为电力用户节约用电成本及参与电力系统运行调峰提供了新的契机.作为需求响应的一种实现形式,分时电价可实现性强且应用较广,基于分时电价实施高耗能企...轧批量计划编制和分时电价下负荷转移重调度2个阶段优化求解,在保证生产前提下节约用电成本. 2.1 第1阶段:热轧批量计划编制 针对热轧批量计划编制的计算复杂性难题,采用遗传算法(genetic algorithm,GA)进行求解.算法总体流程基于标准遗传算法框架,算法求解的关键是染色体编码,以及选择,交叉,变异算子的设计. 2.1.1 染色体编码 针对热轧批量计划编制的复杂......
