Studies on Finance Shared Service Implementation for Multinational Corporation

罗克韦尔自动化有限公司(以下简称RA公司)是一家拥有百年历史的工业自动化跨国公司，在全球工业自动化动力、控制与信息技术解决方案等领域占据领先地位，随着罗克韦尔在华投资规模的扩张，对财务后援支持的需求也在不断增大，逐步转化为财务人员数量的增加，形成了基于集团外派的分散式财务管理，财务部门作为支持部门，必须提高财务管理水平，加强财务信息质量的保障与财务信息的收集与反馈，提高财务服务质量与降低财务服务成本，才能为公司的快速发展与国际化战略实施提供有力支撑。落实成本领先战略与实现国际化业务拓展将成立财务共享服务中心带上了日程。怎样优化财务管理，使财务部门成为业务部门的合作伙伴，专注于发掘为企业创造价值...Rockwell Automation is a leading company in automation area and represents a deep history of product innovation and customer service. It delivers comprehensive portfolio of products, software and services across countries. Along with RA widen its investment scope in China, the demand for finance department to improve service, quality, accuracy and timeliness increases. But current business units...学位：工商管理硕士院系专业：管理学院工商管理教育中心（MBA中心）_工商管理硕士(MBA)学号：1552005130134

集团公司实施财务共享服务的关键

本文论述了财务共享服务的产生及内涵,提出了充分发挥财务共享服务的全部潜能的几点关键:获得绝对的管理层承诺;获得业务单元与员工的支持;转变企业文化;统一标准流程;建立信息技术系统支持;确定服务水平协议;变革过程循序渐进

Monolithically Integrated Optical Receiver with Spatially Modulated Optical Detector in CMOS Technology

设计了与标准CMOS工艺兼容的850 nM空间调制(SPATIAlly MOdulATEd,SM)结构光电探测器,在分析器件物理模型的基础上,建立了SPECTrE环境中等效电路的新模型。提出标准CMOS工艺下SM探测器与前置放大电路单片集成的电路设计。仿真结果表明,在850 nM光照下,SM探测器带宽达到400 MHz,并提供62 MA/W的响应度。整个集成芯片的工作速率为400 Mb/S,增益为0.81 kV/W,功耗为91 MW。A monolithically integrated optical receiver(λ=850 nm) with spatially modulated(SM) optical detector is designed in standard 0.5 μm CMOS technology,the equivalent circuit model of the SM light detector is built in the SPECTRE environment.Simulation results show that the SM optical detector researches a bandwidth of 420 MHz and a responsibility of 78 mA/W.OEIC has a bandwidth of 400 Mb/s and gain of 0.81 kV/W with the power dissipation of 91 mW.厦门市科技计划项目(3502Z20063002

Microgrid inverter grid disconnection/connection seamless switching control method based on phase angle estimation

本发明涉及一种基于相角估算的微电网逆变器离并网无缝切换控制方法。使用储能系统作为主电源，包括储能电池、变流器、PCS模式控制器。在并网模式下使用PQ控制，孤岛模式下使用V/F控制。从并网至孤岛切换过程中电压幅值参考值由离网前电网相电压峰值给定，电压相角参考值由离网前电网角频率平均值和离网时刻的瞬时相角计算得到。从孤岛至并网切换过程中，利用基于电网电压瞬时值的相角估计算法更改逆变器V/F模式中相角参考值，快速跟踪电网相角，在PLL稳定锁相后，使用精准的电压相角代替估算值。通过叠加频率干扰量判断微网是否并网完成，更改相应控制模式，实现无缝切换

基于模型设计开发的光伏逆变器控制系统与方法

本发明涉及一种基于模型设计开发的光伏逆变器控制系统与方法。该发明采用基于模型设计方法实现模糊控制策略的控制器代码生成，开发光伏逆变器控制系统。模糊控制器通过调节直流电压、系统电流，保证了光伏输出电压、电流的稳定可靠性。基于模型设计的光伏逆变器控制系统，采用MATLAB/Simulink与DSP联合开发方法，完成控制系统从仿真模型到DSP(数字信号处理器)控制代码自动生成的步骤，有效解决了传统开发模式中存在系统算法设计与硬件脱节的弊病，避免了控制器仿真参数在实际硬件中无法使用，需要重新盲目调节的问题，实现了数字控制仿真与代码编写无缝衔接，有效缩短了光伏逆变器控制系统的开发周期

基于模型设计开发的光伏逆变器控制系统与方法

本发明涉及一种基于模型设计开发的光伏逆变器控制系统与方法。该发明采用基于模型设计方法实现模糊控制策略的控制器代码生成，开发光伏逆变器控制系统。模糊控制器通过调节直流电压、系统电流，保证了光伏输出电压、电流的稳定可靠性。基于模型设计的光伏逆变器控制系统，采用MATLAB/Simulink与DSP联合开发方法，完成控制系统从仿真模型到DSP(数字信号处理器)控制代码自动生成的步骤，有效解决了传统开发模式中存在系统算法设计与硬件脱节的弊病，避免了控制器仿真参数在实际硬件中无法使用，需要重新盲目调节的问题，实现了数字控制仿真与代码编写无缝衔接，有效缩短了光伏逆变器控制系统的开发周期

Control of a Grid-Forming Inverter Based on Sliding-Mode and Mixed H-2/H-infinity Control

A grid-forming inverter (GFI) is an important component for operation of an islanded microgrid. Its purpose, similar to a conventional slack bus generator, is to build up a reference voltage for other distributed generating units in the microgrid. Usually, a nested-loop PI control structure is employed to control a grid-forming inverter in a dq reference frame. However, conventional PIbased nested-loop control method has a deteriorative performance under parameter variations. In this paper, a novel nested-loop control strategy is proposed for control of a grid-forming inverter system containing an LC output filter and loads. The proposed method doesn’t require a precise model for the inverter system and can better deal with uncertainties and LC filter resonance without using any passive or active damping mechanisms. It utilizes a sliding mode control in the inner current loop and a mixed H2/H1 optimal control in the outer voltage loop, which provides the advantages of constant switching frequency, low total harmonic distortion (THD), robustness against parameters variations and fast transient response. The simulation and hardware experiments presented in this paper demonstrate the proposed controller’s improved transient and steadystate performance in various key criteria, over conventional PI-based nested-loop control strategy

Design of optimal PI controller with dead-zone link for low-order processes with time delay

In this paper, a design method of optimal proportional-integral (PI) controller with dead-zone link is presented for low-order processes with time delay. Closed-loop system is the nonlinear control system with the dead-zone link. The feedback system can be equivalently transformed into the linear switch system (LSS) or autonomous switch system (ASS). The optimal control problem is equivalently transformed into nonlinear constraint optimization (NLCO) problem via common Lyapunov functions (CLF) theorem and Lyapunov theorems. Therefore, optimal PI controller can be obtained by solving the NLCO problem. Simulation results show effectiveness and usefulness of theproposed design method