共查询到20条相似文献,搜索用时 281 毫秒
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本文介绍了齿轮传动的多目标设计方法,以斜齿轮体积和传动平稳可靠性为目标函数,建立了斜齿圆柱齿轮传动的多目标优化设计数学模型.并且结合实例利用科学计算软件MATLAB的优化工具箱求解多目标优化问题.目前,对于斜齿轮优化设计的研究主要集中在减小体积方面,一般不考虑传动平稳性.本文对减小体积和提高传动平稳可靠性两个目标进行了联合优化,这对于齿轮传动设计具有理论指导意义. 相似文献
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基于MATLAB的斜齿轮传动多目标可靠性优化设计 总被引:2,自引:1,他引:1
介绍了齿轮传动的多目标设计方法,以斜齿轮体积和传动平稳可靠性为目标函数,在保证齿轮强度可靠性的前提下,建立了斜齿圆柱齿轮传动的多目标优化设计数学模型.并且结合实例利用科学计算软件MATLAB的优化工具箱求解优化问题.目前,对于斜齿轮优化设计的研究主要集中在减小体积方面,一般不考虑传动平稳性.对减小体积和提高传动平稳可靠性两个目标进行了联合优化,这对于齿轮传动设计具有理论指导意义. 相似文献
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在可靠性的基础上建立斜齿轮传动的多目标优化教学模型,结合实例,对减小体积和保证传动平稳的两个目标联合进行优化,并用MATLAB优化工具箱进行了求解,优化结果令人满意,这对于齿轮传动的设计具有很大的参考价值. 相似文献
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陈新汝 《机械工程与自动化》2010,(1):113-114
以斜齿轮体积和传动平稳可靠性为目标函数,建立了斜齿圆柱齿轮传动的多目标优化设计数学模型。将LINGO9.0优化算法应用于机械工程的优化设计中,提出了LINGO算法的优化原理及数学模型的建立,给出求解的方法。对减小体积和提高传动平稳可靠性两个目标进行了联合优化,在满足强度、传动平稳性等方面寻求最优化齿轮配置。 相似文献
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针对交错轴斜齿轮传动传统设计中的不足之处,阐述了基于全膜弹流理论的交错轴斜齿轮传动优化设计的目的和意义。选择螺旋角β和齿数比u作为设计变量,油膜厚度和磨损量作为目标函数,啮合效率作为约束条件,合理运用多目标函数优化方法,得出不同工况下以及不同设计要求下的优化结果。 相似文献
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讨论了重载齿轮设计中的各种影响因素;分析了斜齿轮和人字齿轮的优缺点,在此基础上将重载齿轮确定为弧齿线圆柱齿轮,并对其建立了以重合度最大、体积和相对滑动率最小为目标的多目标优化数学模型;给出了重载齿轮传动优化设计约束条件,运用多目标优化的乘除法获得了最优解.采用MATLAB软件实现了实例的优化设计目的,提高了机械设计效率和精度. 相似文献
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基于MATLAB及惩罚函数法的斜齿轮传动优化设计 总被引:1,自引:0,他引:1
《机械工程师》2016,(12)
斜齿轮传动在机械行业中应用广泛,基于机械优化设计理论,以MATLAB为平台,根据斜齿轮的设计要求和特点,运用内点惩罚函数法建立了斜齿轮副优化设计的数学模型,以该对齿轮的体积之和为目标函数进行优化,并利用MATLAB编写了相关优化程序。在同一设计要求下,与传统的斜齿轮设计方法对比,优化设计后的齿轮质量更轻,体积更小,更符合实际工况的需求。 相似文献
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讨论了重载齿轮设计中的各种影响因素;分析了斜齿轮和人字齿轮的优缺点,在此基础上将重载齿轮确定为弧齿线圆柱齿轮,并对其建立了以重合度最大、体积和相对滑动率最小为目标的多目标优化数学模型;给出了重载齿轮传动优化设计约束条件,运用多目标优化的乘除法获得了最优解。采用MATLAB软件实现了实例的优化设计目的,提高了机械设计效率和精度。 相似文献
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Deming Lei 《The International Journal of Advanced Manufacturing Technology》2008,37(1-2):157-165
This paper addresses multi-objective job shop scheduling problems with fuzzy processing time and due-date in such a way to
provide the decision-maker with a group of Pareto optimal solutions. A new priority rule-based representation method is proposed
and the problems are converted into continuous optimization ones to handle the problems by using particle swarm optimization.
The conversion is implemented by constructing the corresponding relationship between real vector and the chromosome obtained
with the new representation method. Pareto archive particle swarm optimization is proposed, in which the global best position
selection is combined with the crowding measure-based archive maintenance, and the inclusion of mutation into the proposed
algorithm is considered. The proposed algorithm is applied to eight benchmark problems for the following objectives: the minimum
agreement index, the maximum fuzzy completion time and the mean fuzzy completion time. Computational results demonstrate that
the proposal algorithm has a promising advantage in fuzzy job shop scheduling. 相似文献
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Multiobjective optimization for force and moment balance of a four-bar linkage using evolutionary algorithms 总被引:1,自引:0,他引:1
Mohammad Reza Farmani Abdolrahman Jaamialahmadi Meisam Babaie 《Journal of Mechanical Science and Technology》2011,25(12):2971-2977
In this study, force and moment balance of a planar four-bar linkage is implemented using evolutionary algorithms. In the
current problem, the concepts of inertia counterweights and physical pendulum are utilized to complete balance of all mass
effects, independent of input angular velocity. A proposed multiobjective particle swarm optimization, and non-dominated sorting
genetic algorithm II are applied to minimize two objective functions subject to some design constraints. The applied algorithms
produced a set of feasible solutions called pareto optimal solutions for the design problem. Finally, a fuzzy decision maker
is utilized to select the best solution among the obtained pareto solutions. The results show that optimal solutions minimize
the weights of applied counterweights and eliminate both shaking forces and moments transmitted to the ground, simultaneously. 相似文献
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D. Y. Sha Hsing Hung Lin 《The International Journal of Advanced Manufacturing Technology》2009,45(7-8):749-758
The academic approach of single-objective flowshop scheduling has been extended to multiple objectives to meet the requirements of realistic manufacturing systems. Many algorithms have been developed to search for optimal or near-optimal solutions due to the computational cost of determining exact solutions. This paper provides a particle swarm optimization-based multi-objective algorithm for flowshop scheduling. The proposed evolutionary algorithm searches the Pareto optimal solution for objectives by considering the makespan, mean flow time, and machine idle time. The algorithm was tested on benchmark problems to evaluate its performance. The results show that the modified particle swarm optimization algorithm performed better in terms of searching quality and efficiency than other traditional heuristics. 相似文献
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Erwie Zahara Yi-Tung Kao 《The International Journal of Advanced Manufacturing Technology》2009,40(11-12):1118-1124
Specifying proper tolerances for manufactured goods results in greater savings and improved performance, which may ultimately determine whether a product succeeds or fails in the marketplace. In the past, tolerance specification has been more an art than a science, and is largely dependent upon experiences. A more scientific and reliable approach is presented in this paper. A hybrid of Nelder-Mead simplex method and particle swarm optimization (NM-PSO) is introduced for the design of tolerance of the machine elements of an overrunning clutch assembly. The objective is to obtain tolerances of the individual components so that the cost of manufacturing and quality loss is minimized. Experimental results demonstrate that hybrid NM-PSO is extremely effective and efficient in locating best-practice optimal solutions compared to geometric programming (GP), genetic algorithm (GA), and particle swarm optimization (PSO) methods. 相似文献
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在电网检修计划编制的基本原则和工作流程下,根据粒子群基本算法原理对电网检修计划编制进行数学建模。考虑检修时间作为自变量矢量,考虑期望缺供电量和检修成本作为其目标函数,考虑检修时间、检修资源和安全性等多个因素作为约束。结合粒子群算法原理和多目标优化理论,全局搜索非支配解集,形成帕累托前沿。最后依据管理者不同的偏好,通过加权计算的方式量化评估各优化目标,从而遴选出最优解,也即最符合决策人员预期的检修计划。通过与非劣排序多目标遗传算法和多目标粒子群算法进行对比,证明本文算法具有较高的实用性,提升了电网运行维护的自动化水平。 相似文献
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针对冗余机械手应用遗传算法(或免疫遗传算法)的轨迹规划所存在的不足,提出了基于微粒群优化算法的冗余机械手轨迹规划方法。利用此算法对寻优过程进行仿真研究,所得结果令人满意,与遗传算法相比,微粒群算法简单、容易,且收敛速度快。此方法能够有效地进行机械手轨迹规划,从而能够为充分发挥冗余度的作用为改善机械手运动提供新的思路。 相似文献
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A hydraulic turbine regulating system (HTRS) is one of the most important components of hydropower plant, which plays a key role in maintaining safety, stability and economical operation of hydro-electrical installations. At present, the conventional PID controller is widely applied in the HTRS system for its practicability and robustness, and the primary problem with respect to this control law is how to optimally tune the parameters, i.e. the determination of PID controller gains for satisfactory performance. In this paper, a kind of multi-objective evolutionary algorithms, named adaptive grid particle swarm optimization (AGPSO) is applied to solve the PID gains tuning problem of the HTRS system. This newly AGPSO optimized method, which differs from a traditional one-single objective optimization method, is designed to take care of settling time and overshoot level simultaneously, in which a set of non-inferior alternatives solutions (i.e. Pareto solution) is generated. Furthermore, a fuzzy-based membership value assignment method is employed to choose the best compromise solution from the obtained Pareto set. An illustrative example associated with the best compromise solution for parameter tuning of the nonlinear HTRS system is introduced to verify the feasibility and the effectiveness of the proposed AGPSO-based optimization approach, as compared with two another prominent multi-objective algorithms, i.e. Non-dominated Sorting Genetic Algorithm II (NSGAII) and Strength Pareto Evolutionary Algorithm II (SPEAII), for the quality and diversity of obtained Pareto solutions set. Consequently, simulation results show that this AGPSO optimized approach outperforms than compared methods with higher efficiency and better quality no matter whether the HTRS system works under unload or load conditions. 相似文献