This paper proposes a hill-climbing particle swarm optim ization algorithm with variable width neighborhood (vwnHCPSO).The new method ass umes that some stochastic particles are produced in an initial neighborhood of ...This paper proposes a hill-climbing particle swarm optim ization algorithm with variable width neighborhood (vwnHCPSO).The new method ass umes that some stochastic particles are produced in an initial neighborhood of t he best particle P_g at the first iteration of PSO.Then the best individual P_gn of the stochastic particles is found. If P_gn is better than P_g,P_g is replaced with P_gn and the next iteration of PSO goes on. If P_gn is not better than P_g,the neighborhood wid th of the best particle P_g is broadened, the stochastic particles producti on is renewed and the best individual P_gn of stochastic particles is f ound again. If P_gn can be better than P_g now, P_g is repla ced with P_gn and the next iteration of PSO can go on. Otherwise, the neighborhood width of the best particle P_g is broadened again and the next iteration of PSO does not go on until the best individual P_gn of stoc hastic particles is found or the neighborhood width exceeds the scheduled width . Then, vwnHCPSO, hill-climbing particle swarm optimization algorithm with inv ariable width neighborhood (HCPSO) and PSO are used to resolve several well-kno wn and widely used test functions’ optimization problems. Results show t hat vwnHCPSO has greater efficiency, better performance and more advantages in m any aspects than HCPSO and PSO. Next, vwnHCPSO is used to train artificial neur al network (NN) to construct a practical soft-sensor of light diesel oil flash point of the main fractionator of fluid catalytic cracking unit (FCCU).The obtai ned results and comparison with actual industrial data indicate that the new met hod proposed in this paper is feasible and effective in soft-sensor of light di esel oil flash point.展开更多
研究并实现了一种适用于红外热像仪实际工程应用的自动调焦技术。该技术采用轴向移动变焦方式,选取拉普拉斯(Laplacian)算子作为评价函数模板,以优化的爬山搜索法进行峰值判断,同时结合PID的控制方法驱动调焦电机,最终实现了稳定、快速...研究并实现了一种适用于红外热像仪实际工程应用的自动调焦技术。该技术采用轴向移动变焦方式,选取拉普拉斯(Laplacian)算子作为评价函数模板,以优化的爬山搜索法进行峰值判断,同时结合PID的控制方法驱动调焦电机,最终实现了稳定、快速、精确的自动对焦,并充分考虑了对实际应用中场景目标的适用性。本技术以FPGA为核心处理器,采用SoPC(system on programmable chip,可编程片上系统)的处理架构实现算法,成功应用于工程项目中。展开更多
文摘This paper proposes a hill-climbing particle swarm optim ization algorithm with variable width neighborhood (vwnHCPSO).The new method ass umes that some stochastic particles are produced in an initial neighborhood of t he best particle P_g at the first iteration of PSO.Then the best individual P_gn of the stochastic particles is found. If P_gn is better than P_g,P_g is replaced with P_gn and the next iteration of PSO goes on. If P_gn is not better than P_g,the neighborhood wid th of the best particle P_g is broadened, the stochastic particles producti on is renewed and the best individual P_gn of stochastic particles is f ound again. If P_gn can be better than P_g now, P_g is repla ced with P_gn and the next iteration of PSO can go on. Otherwise, the neighborhood width of the best particle P_g is broadened again and the next iteration of PSO does not go on until the best individual P_gn of stoc hastic particles is found or the neighborhood width exceeds the scheduled width . Then, vwnHCPSO, hill-climbing particle swarm optimization algorithm with inv ariable width neighborhood (HCPSO) and PSO are used to resolve several well-kno wn and widely used test functions’ optimization problems. Results show t hat vwnHCPSO has greater efficiency, better performance and more advantages in m any aspects than HCPSO and PSO. Next, vwnHCPSO is used to train artificial neur al network (NN) to construct a practical soft-sensor of light diesel oil flash point of the main fractionator of fluid catalytic cracking unit (FCCU).The obtai ned results and comparison with actual industrial data indicate that the new met hod proposed in this paper is feasible and effective in soft-sensor of light di esel oil flash point.
文摘研究并实现了一种适用于红外热像仪实际工程应用的自动调焦技术。该技术采用轴向移动变焦方式,选取拉普拉斯(Laplacian)算子作为评价函数模板,以优化的爬山搜索法进行峰值判断,同时结合PID的控制方法驱动调焦电机,最终实现了稳定、快速、精确的自动对焦,并充分考虑了对实际应用中场景目标的适用性。本技术以FPGA为核心处理器,采用SoPC(system on programmable chip,可编程片上系统)的处理架构实现算法,成功应用于工程项目中。
