Vehicle motion control with subsystem prioritization

This paper presents a new approach for integrated vehicle motion control, coordinating multiple vehicle subsystems of a passenger car including friction brake system, near-wheel drive electric motors, wheel steer actuators, camber angle actuators, dynamic tire pressure system and actuators generating additional normal forces. The proposed algorithms are based on restriction weights into the cost function of optimization-based control allocation. Hardware-in-the-loop investigation using a test rig with hardware components of friction brake system and dynamic tire pressure system showed that the proposed approach allows to achieve lower energy consumption and energy losses without significant impairment of motion stability and vehicle handling as compared to conventional control allocation.     

信息管理自动化系统在天脊集团的应用

面对日益激烈的竞争,天脊煤化工集团有限公司将信息管理自动化系统应用于公司的管理。进行了基础设施建设、数据库建立和管理分系统的建立,大大提高了公司的管理水平。     

网络融合下的鉴权技术研究

为提供整体鉴权管理机制以实现固网与移动网络的融合,在对现有通信网络及IMS的安全鉴权进行研究的基础上,提出以EAP-AKA协议加上SIM卡的鉴权机制和只使用SIM卡的用户识别功能两种方案,形成融合网络的整体鉴权。最后对融合网络的未来鉴权机制做了探讨。     

电信业IMS发展研究

通过探讨分析电信业全业务运营发展的必然趋势,揭示FMC作为电信业全业务发展的必然选择。目前,IMS已成为业界认可的支持固定接入和移动接入的统一核心控制网络;本文重点分析研究了基于IMS实现融合网络的技术架构、使用的角度和优势、运营商转型、应用部署情况、面临的问题和思考。     

Subsystem Global Modal Parameterization for efficient simulation of flexible multibody systems

This paper presents a new model order reduction strategy for flexible multibody simulation, namely the Subsystem Global Modal Parameterization. The proposed method is based on a system‐level reduction technique, named Global Modal Parameterization, but offers significant improvements for systems with many independent DOFs. The approach splits up the motion of a mechanism or part of a mechanism into a relative motion, in which the members move relatively with respect to each other, and a global motion of the system, in which the relative position of the members does not change. The relative motion is described by a local Global Modal Parameterization model expressed in a mechanism‐attached frame, and the global motion is described by the motion of the mechanism‐attached frame. In order to improve simulation efficiency, mass invariants are used, which are also introduced in this paper. Two numerical examples are presented, which show the good accuracy and the major simulation efficiency improvements this new approach offers. Copyright © 2011 John Wiley & Sons, Ltd.     

UML系统模型的组织

用UML对系统建模，可能要产生大量的描述系统模型的制品。说明了如何从系统的观点组织模型，并阐述了系统、子系统、视图和模型间的关系。     

微波通信站的防雷保护

本文介绍了由三个子系统构成的微波通信站防雷保护系统及其保护措施。三个子系统分别起到将绝大部分雷电流直接引入地中泄散、阻塞侵入到设备上的雷电波以及限制被保护物上的雷电过电压幅值的作用。这三个子系的作用是互相配合，各司其职，缺一不可的。     

一种IMS业务控制机制的设计方法

IMS可以针对用户不同的需求提供广泛的增值多媒体业务,通过专门的SIP应用服务器可以在IMS网络之上实现这些业务。本文主要讨论当用户获得一个IMS订购关系且其订购关系包含一些增值业务时,如何创建业务专用的数据即过滤规则;当用户在IMS网络上发起业务请求时,通过业务控制机制将SIP请求正确的路由到应用服务器,以执行相应的业务逻辑。     

智慧园区设计概要

新技术、新产品、新的子系统正在不断地被应用到智能化建设中,建筑智能化程度的高低已经在很大程度上决定建筑物的档次。该文以一个包含酒店以及商住的园区为例,提出了智慧园区的概念和智慧园区的设计理念。通过对酒店以及商住部分各子系统功能的介绍,使得智慧园区的建设有章可循;同时文章也提出了智慧园区建设将面临的挑战,使得读者对智慧园区的理解和认识更加直观和客观。     

Towards Standardized and Automated Fault Management and Service Provisioning for NGNs

The IP Multimedia Subsystem (IMS), already widely recognized as a fundamental core component of Next Generation Networks (NGNs), enables proliferation of a huge variety of value added services. Simultaneous to the emergence of triple play services there is a strong need for establishing standardized methodologies for service fulfillment and assurance, maintaining service execution parameters at advertised levels. Traditional Operations Support Systems (OSS) are not adequate for managing NGNs. This work shows experiences gained from implementing OSS for NGNs. It describes a solution that combines extensive NGN development expertise with a new generation, of policy-based, service oriented OSS solutions in order to provide enhanced levels of automation and reliability to the NGN service delivery and session control environment. Primary focus of this approach is put on service assurance and service fulfillment mechanisms for remote monitoring, automated control and configuration of standard compliant IMS infrastructures, such as the Open Source IMS Core (OSIMS) based Open IMS Playground. This work describes state of the art NGN OSS design principles and knowledge attained by integration of standardized fault management as well as service and subscriber provisioning procedures showing how the full cycle from service deployment to service advertisement to service execution can be delivered in an automated way.