2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM)最新文献

Study on acoustic emission signal of diamond grinding roller binder 金刚石磨辊结合部声发射信号研究

2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM) Pub Date : 2022-11-18 DOI: 10.1109/WCMEIM56910.2022.10021540

Qingbin Wang, Honghui He, Huadong Zhao, Zhen Zhu, Chang Liu, Shuaikang Zhou

引用次数: 0

Research on Lubrication and Lubricating Oil Supply Strategy of Low-speed Diesel Engine Cylinder-Piston Ring Pack 低速柴油机气缸-活塞环组润滑及润滑油供应策略研究

2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM) Pub Date : 2022-11-18 DOI: 10.1109/WCMEIM56910.2022.10021483

Jiyun Zhang, JinHua Liu, Zhixiang Pan

{"title":"Research on Lubrication and Lubricating Oil Supply Strategy of Low-speed Diesel Engine Cylinder-Piston Ring Pack","authors":"Jiyun Zhang, JinHua Liu, Zhixiang Pan","doi":"10.1109/WCMEIM56910.2022.10021483","DOIUrl":"https://doi.org/10.1109/WCMEIM56910.2022.10021483","url":null,"abstract":"In view of the characteristics of Marine low speed diesel engine cylinder lubrication using external oil injection, a lubrication model for cross-head two-stroke diesel engine cylinder liner and piston ring pack was established. The orthogonal experimental design method is used to comprehensively analyze the influence of three factors, “oil injection timing”, “oil feed rate” and “oil injection hole position”, on the frictional work loss of the piston ring pack. Combined with genetic optimization algorithm and BP neural network, the optimization goal is to minimize the friction loss of piston ring pack, and further quantitative analysis of the orthogonal test results is carried out. The optimized design shows that: when the thickness of the oil film at the inlet of the cylinder liner surface is 3µm, the optimal combination is “oil injection timing (advance) + 8ms, oil feed rate 0.9g/kW. h, oil injection hole position angle 140°CA”. When the thickness of the oil film at the surface inlet is 2µm, the optimal combination is “oil injection timing (advance) + 12ms, oil feed rate 1.0g/kW. h, oil injection hole position angle 100°CA”.","PeriodicalId":202270,"journal":{"name":"2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM)","volume":"739 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115697468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reliability optimization for load-sharing systems with exponentially distributed units 具有指数分布单元的负荷共享系统可靠性优化

2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM) Pub Date : 2022-11-18 DOI: 10.1109/WCMEIM56910.2022.10021559

Qin Yuhan, Wang Kun, Hao Songhua

引用次数: 0

Study on the Characteristics of Multiway Valve with Compensator with Variable Pressure Difference 可变压差补偿器多路阀特性研究

2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM) Pub Date : 2022-11-18 DOI: 10.1109/WCMEIM56910.2022.10021414

X. Chen, Bang Li

{"title":"Study on the Characteristics of Multiway Valve with Compensator with Variable Pressure Difference","authors":"X. Chen, Bang Li","doi":"10.1109/WCMEIM56910.2022.10021414","DOIUrl":"https://doi.org/10.1109/WCMEIM56910.2022.10021414","url":null,"abstract":"The existing pre-valve pressure compensation flow control valve has the problems of low flow control accuracy, poor operating performance. In this regard, a load-sensitive flow valve with controllable pressure compensation ability is proposed, which improves the rapidity of large flow conditions and the energy saving and control accuracy of small flow conditions by ensuring that the pressure difference of the main valve is consistent with the change of pilot pressure. The working principle of variable pressure differential pressure compensation multi-way valve is clarified, and the simulation model of the multi-way valve is established on the AMESIM simulation platform for simulation analysis. The results show that when the compound movement requires a large flow, a wide range of no-flow saturation function can be achieved by increasing the pilot pressure, and the flow change curve is smooth in the whole process, and the whole machine runs without jitter, which has good controllability. When a small flow rate is required at low speeds, the pressure loss of the system is reduced by reducing the pressure drop, and the energy saving of the system is improved.","PeriodicalId":202270,"journal":{"name":"2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116877399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of a cut tobacco volume flow detection system based on bulkscan lms511 基于bulkscan lms511的烟丝体积流量检测系统设计

2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM) Pub Date : 2022-11-18 DOI: 10.1109/WCMEIM56910.2022.10021537

Shaolong Han, Jianlin Zhang, Lei Liu, Zhenyu Yang, Baoxin Ran

{"title":"Design of a cut tobacco volume flow detection system based on bulkscan lms511","authors":"Shaolong Han, Jianlin Zhang, Lei Liu, Zhenyu Yang, Baoxin Ran","doi":"10.1109/WCMEIM56910.2022.10021537","DOIUrl":"https://doi.org/10.1109/WCMEIM56910.2022.10021537","url":null,"abstract":"This paper mainly introduces the application of a cut tobacco volume flow detection system based on bulkscan lms511 in the tobacco industry. First, bulkscan lms511 identifies and marks the installation space location information through self-learning algorithm; Then, the cross-sectional feature information such as the height, width and angle of the conveyor belt is extracted and analyzed; Finally, according to the extracted characteristic information, combined with the encoder signal, the instantaneous / cumulative volume flow of conveying cut tobacco can be calculated, and then combined with the cut tobacco density value, the instantaneous / cumulative mass flow of cut tobacco can be calculated indirectly. The measurement error range is 1.11 %-1.48%, and the average error value is 1.29%. The detection system has the characteristics of high precision and high reliability. Based on this platform, more research topics can be carried out. For example, through the PID closed-loop control system to regulate the running speed of the bottom belt of the storage cabinet, it can indirectly control the flow of cut tobacco and improve the continuity and stability of the feed flow.","PeriodicalId":202270,"journal":{"name":"2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116905186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

QMIX Multiple Intelligences Reinforcement Learning Damping Control for Cylindrical Shell QMIX多智能强化学习圆柱壳阻尼控制

2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM) Pub Date : 2022-11-18 DOI: 10.1109/WCMEIM56910.2022.10021369

Yang Song, Xu Kai, Su Hua, Zhang Gang

{"title":"QMIX Multiple Intelligences Reinforcement Learning Damping Control for Cylindrical Shell","authors":"Yang Song, Xu Kai, Su Hua, Zhang Gang","doi":"10.1109/WCMEIM56910.2022.10021369","DOIUrl":"https://doi.org/10.1109/WCMEIM56910.2022.10021369","url":null,"abstract":"One of the fundamental mechanical constructions of ships and navigators is the cylindrical shell structure. Their damping control is difficult to predict and frequently depends on precise control models. For that reason, this work provides a data-driven multi-intelligence reinforcement learning damping control approach that is significance for damping control of massive structures. Firstly, the dynamics equations of cylindrical shell structure are established based on the hypothetical modal method, and modal variables are introduced to derive the state-space equations for damping control of cylindrical shell structure, and an interactive environment for multi-intelligent reinforcement learning is established. Secondly, the damping control strategy of cylindrical shell structure with multiple intelligences is designed based on the value decomposition QMIX algorithm. For a single smart body design vibration displacement, velocity, piezoelectric actuator voltage, smart body operation steps as the state space, quadratic performance indicators with saturation characteristics as the damping effect reward function, greedy strategy as damping action selection method for multi-intelligent body cooperative damping. The QMIX algorithm hybrid network performs fusion evaluation of the joint action value of each intelligence and updates the action value function of a single intelligence. Finally, five sets of hyperparameters are set based on the Grid Search approach for comparative simulation experiments for deep learning network hyperparameter selection. The result of the simulation demonstrate that the current tactic effectively suppresses the vibration of the cylindrical shell construction. Furthermore, the optimal hyperparameter is determined by comparing simulation trials with different values, proving that the approach described in this article has better damping performance under this parameter.","PeriodicalId":202270,"journal":{"name":"2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117113220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Monte-Carlo Tree Search with Multi-Agent Deep Q-Network in Open Shop Scheduling 开放车间调度中基于多智能体深度q网络的蒙特卡罗树搜索增强

2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM) Pub Date : 2022-11-18 DOI: 10.1109/WCMEIM56910.2022.10021570

Oliver Lohse, Aaron Haag, Tizian Dagner

{"title":"Enhancing Monte-Carlo Tree Search with Multi-Agent Deep Q-Network in Open Shop Scheduling","authors":"Oliver Lohse, Aaron Haag, Tizian Dagner","doi":"10.1109/WCMEIM56910.2022.10021570","DOIUrl":"https://doi.org/10.1109/WCMEIM56910.2022.10021570","url":null,"abstract":"Production disruptions, e.g., machine breakdowns, cannot be predicted in any case. Such disruptions lead to a deviation of the planned and optimized production schedule, and the actual production process. Instead of manually re-routing products, an online scheduler can re-route products automatically and maintain the best possible production throughput. To establish such an online scheduler, a framework for combining Monte-Carlo Tree Search (MCTS) and a multi-agent Deep Q-Network (MADQN) to solve the Open Shop Scheduling Problem (OSSP) is developed. Similar to approaches of using some sort of single-agent to guide the MCTS during the exploration phase, this approach deploys a multi-agent. Although the combination of single agents and MCTS have shown promising results in relatively small environments, applications relying on this approach have a very limited number of use cases in a real production scenario due to the considerable number of machines and products [10]. However, for that particular use case, the multi-agents promise a scalable solution even for large environments [6]. To do so, the problem has to be formulated such that a multi-agent can solve it. In addition to that, a learning framework is presented, and the developed approach is compared to an MCTS and single-agent combination.","PeriodicalId":202270,"journal":{"name":"2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126114925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Path Planning of Mobile Robot Based on Improved A* Algorithm 基于改进A*算法的移动机器人路径规划

2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM) Pub Date : 2022-11-18 DOI: 10.1109/WCMEIM56910.2022.10021353

Ju Gao, Xiangrong Xu, Xingning Zhang, Shanshan Xu, Quancheng Pu

引用次数: 6

Toward Kinematic Control for Redundant Manipulators with Flexibility Optimization 基于柔性优化的冗余机械手运动控制研究

2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM) Pub Date : 2022-11-18 DOI: 10.1109/WCMEIM56910.2022.10021392

Xin Su, Xin Chen, Xiaojing Lv

引用次数: 0

Design and Experiment of a Novel Manipulator for Autonomous Harvesting Tomato Clusters 一种新型番茄簇自主收获机械手的设计与实验

2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM) Pub Date : 2022-11-18 DOI: 10.1109/WCMEIM56910.2022.10021390

Jinliang Yin, Ting Yuan, Jiacheng Rong, Yan Yang

引用次数: 0