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登高车操控结构及电控系统优化研究
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作者 李良 《装备制造技术》 2024年第3期131-133,共3页
登高车作为现代重工制造企业、建筑、维护和救援等特定领域不可或缺的设备,其安全性、灵活性和效率至关重要。登高车作为高空作业的关键设备,其操控结构和电控系统的优化至关重要。本研究以38米登高车为例,通过系统工程原理确定了优化... 登高车作为现代重工制造企业、建筑、维护和救援等特定领域不可或缺的设备,其安全性、灵活性和效率至关重要。登高车作为高空作业的关键设备,其操控结构和电控系统的优化至关重要。本研究以38米登高车为例,通过系统工程原理确定了优化目标和设计变量,采用模型预测控制(MPC,Model Predictive Control)和有限元分析(FEA,Finite Element Analysis)技术对其进行综合优化设计。该研究成功提升了登高车的稳定性和响应速度,降低了操作复杂性和系统故障率,显著提高了作业性能和安全性。研究结果表明,采用的方法能有效拟合操控结构和电控系统之间的关系,获取最优结构参数和控制策略。这不仅促进了相关领域的技术进步和工业生产的可持续发展,也为企业和研究机构提供了重要的技术支持和解决方案。 展开更多
关键词 登高车 操控结构 电控系统 优化设计
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MATHEMATICAL MODEL OF SELF-REPAIRING FLIGHT CONTROL 被引量:2
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作者 王永 詹训慧 +1 位作者 吴刚 胡寿松 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2003年第2期178-183,共6页
The most prospective method for certain structural failures and damages that cannot employ redundancy is self-repairing techniques, to ensure especially the maximum flight safety. Based on the characters of self-repai... The most prospective method for certain structural failures and damages that cannot employ redundancy is self-repairing techniques, to ensure especially the maximum flight safety. Based on the characters of self-repairing aircraft, this paper states some basic assumptions of the self-repairing aircraft, and puts forward some special new conceptions concerning the self-repairing aircraft: control input, operating input, command input, repair input and operating and control factor as well as their relationships. Thus it provides a simple and reliable mathematical model structure for the research on the self-repairing control of the aircraft. 展开更多
关键词 SELF-REPAIRING flight control mathematical model operating and control factor
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Safety architecture of internet based multi-robot teleoperation system
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作者 赵杰 高永生 蔡鹤皋 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2005年第6期599-602,共4页
Safety subsystem is one of the important parts in robot teleoperation system. In this paper, a safety architecture of safety subsystem in Internet based multi-operator-multi-robot (MOMR) teleoperation system is presen... Safety subsystem is one of the important parts in robot teleoperation system. In this paper, a safety architecture of safety subsystem in Internet based multi-operator-multi-robot (MOMR) teleoperation system is presented. The subsystem is divided into three layers in its logic architecture: interactive monitor layer, collaborative control layer and real-time control layer. The safety problems and the related strategy are clarified by detailed analysis of each layer and relationship among the layers. So we can obtain a high performance MOMR teleoperation system with multi-layer safety architecture. 展开更多
关键词 TELEOPERATION safety architecture multi-operator-multi-robot (MOMR) coordination
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Practical Model for Real Structure and Performance of Heavy Vehicles
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作者 Younes Abbassi Youcef Ait-Amirat Rachid Outbib 《Journal of Mechanics Engineering and Automation》 2015年第2期68-75,共8页
In this paper, a new practical model for real heavy vehicle structure is developed to investigate dynamic responses under steering/acceleration or braking maneuvers. The generalized six DoFs (degrees-of-freedom) non... In this paper, a new practical model for real heavy vehicle structure is developed to investigate dynamic responses under steering/acceleration or braking maneuvers. The generalized six DoFs (degrees-of-freedom) nonlinear vehicle model M1 including longitudinal, lateral, yaw, vertical, roll and pitch dynamics is validated using the measured data reported in different studies. This model takes the CG (center of gravity) of sprung mass, unsprung mass and total vehicle mass into account. Based on this model, the effects of the inertia parameters on the vehicle dynamic responses are investigated for more comprehensive assessments of the model structure. Another nonlinear vehicle model 342 derived from M1 which assumes that the vehicle has a single CG as reported in literature is also developed. The dynamic responses of the vehicle model Mj are compared with those of the model M2 to demonstrate the performance potential of the proposed nonlinear model. The results of dynamic responses with the nonlinear vehicle model MI suggest that the model could offer considerable potential in realizing enhanced ride and handling performance, as well as improved roll and pitch properties in a flexible manner. 展开更多
关键词 MODELING nonlinear vehicle models inertial parameters heavy vehicle dynamics RIDE handling.
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市场势力、行业结构与价格竞争——基于A股上市公司的实证分析 被引量:9
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作者 王亮亮 任保全 《财贸经济》 CSSCI 北大核心 2014年第2期114-124,共11页
价格决定和价格竞争是厂商行为理论研究中的重要议题。囿于价格竞争相关微观企业数据获取和测度方面的难度,相关领域还一直缺乏经验证据。本文探索性地基于上市公司数据进行实证,以我国1999—2010年A股上市公司为研究样本,首先实证检验... 价格决定和价格竞争是厂商行为理论研究中的重要议题。囿于价格竞争相关微观企业数据获取和测度方面的难度,相关领域还一直缺乏经验证据。本文探索性地基于上市公司数据进行实证,以我国1999—2010年A股上市公司为研究样本,首先实证检验了公司在市场中的相对势力与价格竞争之间的关系,并以此为基础,进一步检验行业层面的结构特征对二者间关系的影响。实证检验结果表明:公司市场占有率越高,即在市场中的相对势力越强,其进行价格竞争的优势越明显;不过,公司所处行业的结构特征会调节二者间关系,伴随行业集中度提高,市场势力较强公司进行价格竞争的优势下降,依据行业集中度分组的检验结果同样支持该发现。本文的研究结论不仅在一定程度上填补了价格竞争微观数据经验研究的空白,而且还丰富了产业组织与微观企业间行为关系的学术文献。 展开更多
关键词 市场势力 行业结构价格竞争销售操控
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