摘要：Stabilization of the constrained switched nonlinear systems is an attractive research subject. predictive control can handle variable constraints well and make the system stable. Its stability is typically based on an assumption of initial feasibility of the optimization problem; however the set of initial conditions, starting from where a given predictive formulation is guaranteed to be feasible, is not explicitly characterized. In this paper, a hybrid predictive control method is proposed for a class of switched nonlinear systems with input constraints and un-measurable states. The main idea is to design a mixed controller using Lyapunov functions and a state observer, which switches appropriately between a bounded feedback controller and a predictive controller, and to give an explicitly characterized set of initial conditions to stabilize each closed-loop subsystem. For the whole switched nonlinear system, a suitable switched law based on the state estimation is designed to orchestrate the transitions between the consistituent modes and their respective controllers, and to ensure the whole closed-loop system's stability. The simulation results for a chemical process show the validity of the controller proposed in this paper.

摘要：Gasoline direct injection(GDI)is a pivotal technique for a highly efficient ***,how to maintain a stable rail pressure which offers good fuel economy and low emissions,is still a challengeable *** this paper,a rail pressure controller is designed basing on predictive functional control(PFC),a model predictive control(MPC)method,to surmount the nonlinearity and disc on tinuity brought by the common rail pressure system(CRPS).A control-oriented piecewise linear model is prese nted to simplify the *** simulation results on a benchmark show that rail pressure tracks the setpoint accurately even with some *** from the conciseness of PFC algorithm,the controller can compute the online solution in a short time,which makes it possible to realize the strategy on a fast response system.

摘要：For a class of nonlinear systems whose states are immeasurable, when the outputs of the system are sampled asynchronously, by introducing a state observer, an output feedback distributed model predictive control algorithm is proposed. It is proved that the errors of estimated states and the actual system's states are bounded. And it is guaranteed that the estimated states of the closed-loop system are ultimately bounded in a region containing the origin. As a result, the states of the actual system are ultimately bounded. A simulation example verifies the effectiveness of the proposed distributed control method.

摘要：In this study, an education and application interface was designed for model predictive control (MPC). For this design, MPC Toolbox and MATLAB GUI in the MATLAB software were used. Developed interface includes model predictive control methods, such as single-input single-output, multi-input multi-output, constrained or unconstrained systems. The interface, developed for education of model predictive control methods, was tested in class by the students attending to the Process Dynamic and Control course.

摘要：Background: acute ischemic stroke (AIS) remains the third cause of death and disability, and acute phase responses, both increasing international normalized ratio (INR) and activated partial thromboplastin time (APTT) are associated with worse outcome. Erythrocyte sedimentation rate (ESR) serves as severity marker, and non-fasting triglycerides (TG) indicates remnants of chylomicrons and very low density lipoproteins potentially pro-inflammatory. Aims: to design predictive economic panel evaluating AIS. Patients and methods: 100(AIS) patients were included, clinically evaluated by Scandinavian Stroke Scale (SSS) and Modified Rankin Score (MRS), subjected to complete blood count (CBC) on Cell-Dyne3700, manual ESR, INR and APTT on SYSMEX-CA1500, serum uric acid (SUA), serum albumin and non-fasting (TG) on Beckman Coulter AU480. Statistical analysis: STATA intercooled version 9.2. Results: odd ratio (OR), confidence interval (CI) of (MRS) in correlation to WBCs count in quartile (Q)3, 4 (OR 8.14, CI 2.29 - 8.90, significant P = 0.01;and OD13.5, CI 3.39 - 53.68, high significant P = 0.001 respectively), to APTT in Q3 (OD 4.15, CI 1.09 - 15.82, P = 0.04), SUA in Q3 (OD 0.19, CI 0.05 - 0.68, P = 0.01), TG in Q3,4 (OD 0.24 CI 0.06 - 0.88, P = 0.03;and OD 0.09, CI 0.02 - 0.34 P = 0.001 respectively) and serum albumin in Q3(OD 0.13, CI 0.04 - 0.51, P = 0.003), insignificant correlations to ESR, INR and platelets. Conclusion: according to (MRS), the economic predictive panel should be included WBCs, APTT, SUA, and non-fasting TG with serum albumin as prognostic tool evaluating functional disability in AIS.

摘要：感应电机模型预测控制通过系统状态预测的方法,利用设计好的目标函数直接控制磁链和转矩。该方案易于实现多变量控制和处理非线性约束,但因为预测过程需要使用电机的真实磁链,所以对磁链观测的精度有很高的要求,以滑模磁链观测器替代传统的电流模型和电压模型磁链观测器可大大提高该方案的控制性能。常规的滑模磁链观测器依据电流观测误差设计滑模控制函数,在实现对转子电阻变化的高鲁棒性的同时也引入了定子电阻变化的影响。文章中提出一种基于磁链观测误差的滑模控制函数设计方法,对滑模观测器的性能进行改进。因为磁链的真实值无法直接获取,磁链误差值以近似计算的方式得到。通过仿真和物理实验验证了该方案对电机参数变化的高鲁棒性。

摘要：So far, file access prediction models is mainly based on either the file access frequency or the historical record of the latest access. In this paper, a new file access prediction model called frequency- and recency-based successor (FRS) is presented which combines the advantages of the file frequency with the historical record. FRS model has the capability of rapid response to workload changes and can predict future events with greater accuracy than most of other prediction models. To evaluate the performance of FRS mode, the Linux kernel is modified to predict and prefetch upcoming accesses. The experiment shows that FRS can accurately predict approximately 80% of all file access events, while maintaining an immediate successor queue (ISQ) per-file which only requires regular dynamic updates.

摘要：随着智能交通、基于位置的广告投放、移动对象监测等应用的广泛发展,如何快速预测未来某一时间点的对象的位置成为目前的一个研究热点。提出了一种新颖的AP-I(Adaptive Predication-Index)索引,其在历史轨迹数据缺乏的情况下,能够追踪移动对象的当前位置,大幅提高预测查询的运行效率。与现有的predictive Tree^([4])索引相比,AP-Index能有效地挖掘移动对象之间的路径关联性,避免大量的索引更新和重建操作,提高索引效率。同时,通过引入AP(Adaptive Probability)以及Pruning操作,进一步减小AP-I,提高索引的命中率和查询效率。实验表明,与predictive Tree相比,在保证同等查询效率的基础上,AP-I实现了更优的准确度、更新效率和空间效率。

摘要：Y2002-63305-534 0225322移动环境中端.端 QoS 预测方法=A predictive end-toend QoS scheme in a mobile environment[会,英]/Grand,G.L.& Horlait,E.//Proceedings of the SixthIEEE Symposium on Computers and Communications.—534～539(HE)Y2002-63305-546 0225323移动电话网中定价和业务质量折衷:综合设计方法=Trade-offs between tariffs and QoS in mobile telephonynetworks:an integrated design approach[会,英]/