On the stability of two-step predictive controller based on state observer

For input saturated Hammerstein systems, the two-step predictive control strategy is adopted. The first step calculates the desired intermediate variable applying unconstrained linear modal and predictive control. The second step obtains the real-time control action by solving algebraic equation and desaturation. The case of immeasurable state is considered where the observer gain matrix is solved by Sylvester equation. The sufficient closed-loop stability condition is given and the designing and tuning algorithm for the domain of attraction is proposed. The theoretical results are validated by an example.

RESEARCH ON MOTION COMPENSATION FOR HIGH RESOLUTION PROFILE OF EXTENDED TARGET FOR STEPPED CHIRP RADAR AND DSP IMPLEMENTATION

A discrete model is set up for High Resolution Range Profile (HRRP) of an extended target and the model of echo from an extended target for a Stepped Chirp Radar (SCR) is proposed. The effect of target motion on a range profile is thoroughly analyzed, and based on which precision re- quirement is developed for motion compensation. By studying the time domain correlation and the rule based on the least burst error, a motion compensation algorithm which satisfies the project requirement is presented, and the cyber-emulation confirms the conclusion. At last the processor is designed by using DSP devices to realize motion compensation and target recognition.

International Public Sector Accounting Standards （IPSAS） Implementation in the European Union （EU） Member States

The aim of this paper is to analyze the implementation level of International Public Sector Accounting Standards （IPSAS） in the member states of the European Union （EU）. After an introduction of the legislative framework in the EU and a review of the literature about the implementation of IPSAS in the EU member states, this paper classifies, on the basis of a survey, the states according to their formal implementation levels of IPSAS. It also analyzes the types of accounting （cash basis accounting, modified cash basis accotmting, accrual accounting, and modified accrual basis accounting） used by the states studied. The survey shows that there are important disparities among the member states, both for the application of IPSAS and for the type of accounting that is used. Furthermore, it appears that even if IPSAS is not legally adopted in most European member states, there is a tendency to use modern accounting systems based on accrual accounting close to IPSAS.

Sliding state stepping algorithm for solving impact problems of multi-rigid-body system with joint friction

Impact dynamics of multi-rigid-body systems with joint friction is considered. Based on the traditional approximate assumption dealing with impact problem, a general numerical method called the sliding state stepping algorithm is introduced. This method can avoid difficulties in solving differential equations with variable scale and its result can avoid energy inconsistency before and after impact from considering complexily of tangential sliding mode. An example is given to describe details using this algorithm.

Controlled Implementation of Non-local CNOT Operation Using Three-Qubit Entanglement

We investigate the controlled implementation of a non-local CNOT operation using a three-qubit entangled state. Firstly, we show how the non-local CNOT operation can be implemented with unit fidelity and unit probability by using a maximally entangled GHZ state as controlled quantum channel. Then, we put forward two schemes for conclusively implementing the non-local operation with unit fidelity by employing a partially entangled pure GHZ state as quantum channel. The feature of these schemes is that a third side is included, who may participate the process of quantum non-local implementation as a supervisor. Furthermore, when the quantum channel is partially entangled,the third one can rectify the state distorted by imperfect quantum channel. In addition to the GHZ class state, the W class state can also be used to implement the same non-local operation probabilistically. The probability of successful implementation using the W class state is always less than that using the GHZ class state.

DESIGN AND ANALYSIS OF MULTI-STEP AMPLITUDE QUANTIZATION WEIGHTED 2-D SOLID-STATE ACTIVE PHASED ARRAY ANTENNAS

An aperture design technique using multi-step amplitude quantization for two-dimensional solid-state active phased arrays to achieve low sidelobe is described. It can be applied to antennas with arbitrary complex aperture. Also, the gain drop and sidelobe degradation due to random amplitude and phase errors and element (or T/R module) failures are investigated.

Analysis and implementation of a new hyperchaotic system

Based on a modified Lorenz system, a relatively simple four-dimensional continuous autonomous hyperchaotic system is proposed by introducing a state feedback controller. The system consists of four coupled first-order ordinary differential equations with three nonlinear cross-product terms. Some dynamical properties of this hyperchaotic system, including equlibria, stability, Lyapunov exponent spectrum and bifurcation, are analysed in detail. Moreover, an electronic circuit diagram is designed for demonstrating the existence of the hyperchaos, and verifying computer simulation results.

Controlled remote implementation of quantum operations with high-dimensional systems

We present two protocols for the controlled remote implementation of quantum operations between three-party high-dimensional systems. Firstly, the controlled teleportation of an arbitrary unitary operation by bidirectional quantum state teleportaion （BQST） with high-dimensional systems is considered. Then, instead of using the BQST method, a protocol for controlled remote implementation of partially unknown operations belonging to some restricted sets in high-dimensional systems is proposed. It is shown that, in these protocols, if and only if the controller would like to help the sender with the remote operations, the controlled remote implementation of quantum operations for high-dimensional systems can be completed.

State Feedback Stabilzation for a Class of Time-delay Nonlinear Systems

The problem of global stabilization by state feedback for a class of time-delay nonlinear system is considered. By constructing the appropriate Lyapunov-Krasovskii functionals (LKF) and using the backstepping design, a linear state feedback controller making the closed-loop system globally asymptotically stable is constructed.

IMPLEMENTATION AND PERFORMANCE ANALYSIS OF ACCURATE LOCALIZATION OF SHORT-RANGE TARGETS BASED ON MULTISENSOR SYSTEMS

In this paper, the optimal estimate method is systematically investigated for estimating the position and velocity vectors of a short range target in space with a multisensor system TR n (one transmitting sensor and n receiving sensors). A suboptimal and realizable signal processing scheme is provided. The performance of the suboptimal procedure is analyzed theoretically in detail, and analytical expressions are obtained for the covariance matrix of the estimator error. Simulation results verify the theoretical prediction, which demonstrates the system is able to accurately locate a short range target.

One Step to Generate Cluster States Using Dipole-Induced Transparency in a Cavity-Waveguide System

We present a very simple scheme for generating four-qubit cluster states with one step using paritymeasurement based on dipole-induced transparency in a cavity-waveguide system.The scheme only uses the photondetectors to check the parity of the spatially separated dipole,which are the same (even parity) or different (odd parity)through measuring the light fields in the waveguide.The initial entangled states remain after nondetective identificationand they can be used for successive tasks.

New Category List of Import and Export Commodities Subject to Inspection Implemented by State Administration of Import and Export Commodity Inspection

In light of the needs of China’s foreign economic and trade development and the regulations of the Law of Commodity Inspection, the State Administration of Import and Export Commodity Inspection issued a readjusted Category List of Import and Export Commodities Subject to Inspection Implemented by the Institutions of Commodity Inspection, and it is implemented officially on July 1, 1995. The new category list is compiled on the classified basis of the Commodity Names and Code Coordination System used widely around the world. The commodity code and name are identical to the Commodity List of the Custom Statisticsrelating to which there are 2。

基于有限状态机的STEP-NC加工程序信息提取技术的研究!

有限状态机(FSM)技术是任务调度的核心,通过分析STEP-NC数据流和STEP-NC程序的数据模型,提出FSM的STEP-NC信息提取系统实现方案。把信息提取系统分为节点-实体模块、词法分析模块、实体-实例模块、检索模块和特征重构模块五个模块,在创建节点和字典实体数据的基础上,对基于FSM的五个模块的内部任务处理进行研究,最终得到三维实体几何数据。在Visual Studio 2005平台上开发信息提取系统,并通过实例对其有效性进行验证。

汽车电子节气门Back-stepping滑模控制器设计

建立包含黏滞摩擦模型、复位弹簧模型及齿轮间隙模型的电子节气门系统的数学模型,并针对节气门系统的非线性特性设计了基于非线性终端滑模面的Back-steeping滑模控制器,可以提高系统收敛速度,降低系统误差并消除系统抖动。同时,针对控制系统中不确定扰动及电子节气门阀板角速度和电机电流不可测量变量设计了非线性扩张状态观测器,实现了系统不可测量变量和不确定扰动准确估计。通过搭建ds PACE快速控制原型环境,并针对电子节气门的实际应用工况对设计的控制器进行了实验验证。实验结果表明所设计Back-stepping滑模控制器对目标角度跟踪精度高,收敛速度快且无超调,可以满足电子节气门的控制要求。

基于VC的STEP中性文件后处理器的实现

在分析了STEP中性文件的结构和工作原理的基础上 ,重点介绍了STEP后处理器的设计原理及具体的实现过程 ,并用VC实现了该后处理器 ,完成了由中性文件 (EXPRESS语言 )信息描述到VC系统数据的映射。

STEP专用处理器的设计

介绍STEP专用处理器的用户字典文件、内存工作格式和API设计方法。讨论内存工作格式的系统结构，相关信息的组织方法，允许用户查询、修改并重构STEP文件，并对用户的操作进行语法检查、词法检查；通过调用基本功能函数，用户针对自己的应用编写API，通过API提取CAPP、CAM所需要的信息，实现系统之间的信息交换与共享。以机械产品设计为目标，遵照AP203、AP214，建立了JW—CAD中的应用协议JW－AP，并在该处理器上运行，实现了CAD／CAPP／CAM集成，收到了良好效果。

ICCC上STEP part 203前后处理器的设计与实现

STEP（theSTandardfortheExchangeofProductmodeldata）标准是一个服务于CAD。CAM领域的覆盖产品整个生命周期的形式化的产品数据交换标准，其应用协议的研究开发与实现具有广泛的应用价值．本文主要介绍了STEP标准应用协议配置控制设计STEPpart203的前后处理器的设计与实现，包括应用协议的EXPRESS描述编译、几何拓扑映射、面片合成、中性文件交换、在SUNSPARCworkstation上的处理器实现和零件输入输出测试等内容．

基于STEP的产品信息建模与实现技术研究

建立产品信息的标准化、中性化描述模型是实现产品全生命周期数据交换、信息共享与集成的基础和关键.本文首先讨论了基于STEP的产品信息模型的建模过程,以内燃机为例建立了产品功能信息模型;然后应用EXPRESS语言对其进行了描述,完整、标准、中性地表达产品模型.最后探讨了产品信息模型在具体应用系统中的实现机制.

A novel methodology for constructing a multi-wing chaotic and hyperchaotic system with a unified step function switching control

This paper aims at developing a novel method of constructing a class of multi-wing chaotic and hyperchaotic system by introducing a unified step function. In order to overcome the essential difficulties in iteratively adjusting multiple parameters of conventional multi-parameter control, this paper introduces a unified step function controlled by a single parameter for constructing various multi-wing chaotic and hyperchaotic systems. In particular, to the best of the authors＇ knowledge, this is also the first time to find a non-equilibrium multi-wing hyperchaotic system by means of the unified step function control. According to the heteroclinic loop Shilnikov theorem, some properties for multi-wing attractors and its chaos mechanism are further discussed and analyzed. A circuit for multi-wing systems is designed and implemented for demonstration, which verifies the effectiveness of the proposed approach.