传统工业巨擘西门子作为德国工业4.0的先驱者与践行者,其所构建的Mi ndSphe r e平台在工业物联网行业有着不可动摇的地位。本文基于平台战略理论,构建了“核心—标准—边缘”的技术平台模型,分析了西门子为实现数字化转型升级所采取的...传统工业巨擘西门子作为德国工业4.0的先驱者与践行者,其所构建的Mi ndSphe r e平台在工业物联网行业有着不可动摇的地位。本文基于平台战略理论,构建了“核心—标准—边缘”的技术平台模型,分析了西门子为实现数字化转型升级所采取的平台战略。研究发现:(1)通过实施扩张性归核化战略打造的工业物联网平台MindSphere,是西门子重塑竞争优势的关键之举;(2)西门子在工业物联网的核心技术领域——工业物联和工业控制方面积极推广其标准,促进了国际工业物联网平台标准的统一;(3)西门子通过拓宽技术边界资源和社会边界资源,吸引更多的合作伙伴加入平台生态系统,打破了原有的产业边界,使平台更具有生命力与竞争力;(4)随着标准的全球推广,西门子工业物联网平台的网络效应已经显现:由开发者、运营者、用户和MindSphere应用商店共同构成Mi ndSpher e价值流,数字化服务已成为西门子的主要商业模式;(5)西门子突破了组织惯性。采取工业物联网平台战略的改变了竞争方式、组织形态、产品架构及商业模式,使其成为最大限度地利用网络效应的平台企业。展开更多
Aiming at the high angle of attack pull-up and multi-channel roll pull-up coupling problems of high maneuvering aircraft, this paper establishes the flight attitude control rate by means of unsteady flow numerical sol...Aiming at the high angle of attack pull-up and multi-channel roll pull-up coupling problems of high maneuvering aircraft, this paper establishes the flight attitude control rate by means of unsteady flow numerical solution, dynamic unstructured nested mesh assembly method and numerical solution method of flight mechanics equation. On this basis, a virtual flight simulation platform integrating pneumatics, motion and control is established. Based on this virtual flight simulation platform, F-16 aircraft is simulated by high angle of attack pull-up flight mode and multi-channel roll pull-up coupling flight mode. Finally, the influence of rudder on the yaw control channel is investigated. The results show that the numerical virtual flight simulation platform established in this paper has the ability to simulate maneuvering flight of aircraft.展开更多
文摘Aiming at the high angle of attack pull-up and multi-channel roll pull-up coupling problems of high maneuvering aircraft, this paper establishes the flight attitude control rate by means of unsteady flow numerical solution, dynamic unstructured nested mesh assembly method and numerical solution method of flight mechanics equation. On this basis, a virtual flight simulation platform integrating pneumatics, motion and control is established. Based on this virtual flight simulation platform, F-16 aircraft is simulated by high angle of attack pull-up flight mode and multi-channel roll pull-up coupling flight mode. Finally, the influence of rudder on the yaw control channel is investigated. The results show that the numerical virtual flight simulation platform established in this paper has the ability to simulate maneuvering flight of aircraft.
