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31. 发明授权

US6041172A Multiple scale signal processing and control system 失效
标题翻译：多尺度信号处理和控制系统
公开(公告)号：US6041172A
公开(公告)日：2000-03-21
申请号：US980041
申请日：1997-11-26
申请人： Sunil C. Shah , Pradeep Pandey , Mark A. Erickson
发明人： Sunil C. Shah , Pradeep Pandey , Mark A. Erickson
IPC分类号： G05B13/04 , G05B17/02 , G06F9/455
CPC分类号： G05B13/042 , G05B13/04 , G05B17/02
摘要： A method for processing signals and controlling a physical system in which measurements are obtained at different time scales and/or different space scales. Signals generated from the physical system are processed by first creating a first dynamic model at a first time/space scale that consists of a first set of parameters, a first set of states and a first set of inputs. A second dynamic model at a second time/space scale is also created and consists of a second set of parameters, a second set of states and a second set of inputs. At least one of the first set of parameters in the first dynamic model are computed from the second set of states in the second dynamic model. A second estimator is then created to produce estimates of the second set of states using the second dynamic model, measurements from the first physical system at the second time scale. A first estimator is also created to produce estimates of the first set of states using the first dynamic model, measurements from the first physical system at the first time scale, and the estimates from the second estimator.
摘要翻译：一种用于处理信号并控制在不同时间尺度和/或不同的空间尺度上获得测量的物理系统的方法。通过首先在由第一组参数，第一组状态和第一组输入组成的第一时间/空间尺度上创建第一动态模型来处理从物理系统生成的信号。还创建了第二时间/空间尺度的第二动态模型，并且包括第二组参数，第二组状态和第二组输入。从第二动态模型中的第二组状态计算第一动态模型中的第一组参数中的至少一个。然后创建第二估计器，以使用第二动态模型来产生第二组状态的估计，来自第二物理系统的第二时间尺度的测量。还创建第一估计器，以使用第一动态模型产生第一组状态的估计，来自第一时间尺度的第一物理系统的测量值和来自第二估计器的估计值。

32. 发明授权

US06801881B1 Method for utilizing waveform relaxation in computer-based simulation models 失效
标题翻译：在计算机仿真模型中利用波形松弛的方法
公开(公告)号：US06801881B1
公开(公告)日：2004-10-05
申请号：US09527497
申请日：2000-03-16
申请人： Sunil C. Shah
发明人： Sunil C. Shah
IPC分类号： G06F760
CPC分类号： G05B17/02
摘要： A method for designing high performance products incorporating signal processing and feedback control is disclosed. In one embodiment, a block diagram may be used for a design cycle, for design optimization, or for design estimation. The block diagram contains a set of differential equations or difference equations, and the solution of these sets of equations may be performed by commercially available software tools. In order to utilize the software tools without requiring access to source code or other descriptions of the internal structure of the tools, the system is decomposed using the technique of waveform relaxation. The decomposition using waveform relaxation operates directly to speed up the computations for the block diagram system. The remaining interprocessor communications may be held pending until the end of each iteration's calculations in each block, allowing the software tools to be executed on independent multiple processors. Additional low fidelity models may be added to the block diagram to accelerate the convergence. In non-stationary methods, the model representing each block may vary with each successive iteration. The variation may take the form of successively increasing the complexity and therefore the fidelity of each block with each successive iteration, starting with low fidelity models and finishing with high fidelity models.
摘要翻译：公开了一种设计结合信号处理和反馈控制的高性能产品的方法。在一个实施例中，框图可以用于设计周期，用于设计优化或用于设计估计。框图包含一组微分方程或差分方程，并且这些方程组的解可以通过市售的软件工具来执行。为了利用软件工具而不需要访问源代码或其他工具内部结构的描述，系统使用波形松弛技术进行分解。使用波形弛豫的分解操作直接用于加速框图系统的计算。剩余的处理器间通信可以保持待定，直到每个块中的每次迭代计算结束，允许软件工具在独立的多个处理器上执行。可以向框图中添加附加的低保真模型以加速收敛。在非平稳方法中，表示每个块的模型可以随着每个连续的迭代而变化。该变化可以采取以下形式，即连续地增加每个块的复杂度，从而提高每个块的保真度，从低保真模型开始，并用高保真模型完成。

33. 发明授权

US06745087B2 Method for control of a plant 失效
标题翻译：植物控制方法
公开(公告)号：US06745087B2
公开(公告)日：2004-06-01
申请号：US09737992
申请日：2000-12-14
申请人： Sunil C. Shah
发明人： Sunil C. Shah
IPC分类号： G05B1302
CPC分类号： G05B17/02 , G05B13/042 , G11B20/00
摘要： A scheme for management of uncertainty in control systems that require adaptation is described. The scheme removes as much uncertainty as possible at design time and manufacturing time by taking advantage of available computer resources in pre-computing a large set of robustness-performance tradeoffs. a plant that is controlled by having model controllers and a data evaluator receive monitored signals. The monitored signals are evaluated to determine when sufficient information is received. One of the model controllers generates a control signal based upon the monitored signals received.
摘要翻译：描述了需要适应的控制系统中的不确定性管理方案。该方案通过利用可用的计算机资源预先计算大量的鲁棒性 - 性能权衡来消除在设计时和制造时间尽可能多的不确定性。由模型控制器和数据评估器控制的工厂接收监控信号。评估所监视的信号以确定何时收到足够的信息。模型控制器之一基于接收到的监视信号产生控制信号。

34. 发明授权

US06285971B1 Method for real-time nonlinear system state estimation and control 有权
标题翻译：实时非线性系统状态估计与控制方法
公开(公告)号：US06285971B1
公开(公告)日：2001-09-04
申请号：US09372396
申请日：1999-08-10
申请人： Sunil C. Shah , Pradeep Pandey
发明人： Sunil C. Shah , Pradeep Pandey
IPC分类号： G06F1750
CPC分类号： G05B13/04
摘要： A method for the estimation of the state variables of nonlinear systems with exogenous inputs is based on improved extended Kalman filtering (EKF) type techniques. The method uses a discrete-time model, based on a set of nonlinear differential equations describing the system, that is linearized about the current operating point. The time update for the state estimates is performed using integration methods. Integration, which is accomplished through the use of matrix exponential techniques, avoids the inaccuracies of approximate numerical integration techniques. The updated state estimates and corresponding covariance estimates use a common time-varying system model for ensuring stability of both estimates. Other improvements include the use of QR factorization for both time and measurement updating of square-root covariance and Kalman gain matrices and the use of simulated annealing for ensuring that globally optimal estimates are produced.
摘要翻译：用外推法估计非线性系统的状态变量的方法是基于改进的扩展卡尔曼滤波（EKF）类型技术。该方法使用离散时间模型，基于描述系统的一组非线性微分方程，其关于当前工作点线性化。使用集成方法执行状态估计的时间更新。通过使用矩阵指数技术实现的集成避免了近似数值积分技术的不准确性。更新的状态估计和相应的协方差估计使用通用的时变系统模型来确保两个估计的稳定性。其他改进包括使用QR因子分析进行时间和平方根协方差和卡尔曼增益矩阵的测量更新，以及使用模拟退火确保产生全局最优估计。

35. 发明授权

US4069981A Method of feeding a film granulator 失效
标题翻译：喂胶膜造粒机的方法
公开(公告)号：US4069981A
公开(公告)日：1978-01-24
申请号：US762466
申请日：1977-01-24
申请人： Sunil C. Shah
发明人： Sunil C. Shah
IPC分类号： B26D1/38 , B02C18/00 , B02C18/06 , B02C18/14 , B02C18/22 , B02C23/16 , B29B13/10 , B29B17/04
CPC分类号： B02C18/148 , B02C18/2283 , B29B17/04 , B02C2018/2208 , B02C2023/165 , B29B2017/044 , B29L2007/008 , Y02W30/521 , Y02W30/625
摘要： The present disclosure relates to a size reduction apparatus such as a granulator and particularly to a novel manner of feeding such whereby thin plastic sheet material may be successfully granulated at high throughput speeds. The construction includes the use of a closed chamber mounted above the granulator chamber and having a longitudinally oriented feed slot therein, directly above which a pair of nip rolls are mounted so as to enable sheet material to be fed directly into the chamber of the granulating machine towards the rotor and in a generally radial direction thereto. The device is operated while the chamber thereof is at least partly full of partially granulated material. A baffle extending from the upstroke side of such slot is positioned so as to downwardly extend into the chamber and approaching the rotor thereof so as to deflect partially granulated material carried by the rotational movement of the rotor from contacting the newly entering sheet material so as to prevent deflection thereof away from the rotor.
摘要翻译：本公开涉及诸如造粒机的尺寸减小装置，特别是一种新型的进料方式，从而可以以高生产速度成功地造粒薄塑料片材。该结构包括使用安装在造粒机室上方并在其中具有纵向取向的进料槽的封闭室，其中直接安装一对夹辊，以使片材直接进料到造粒机的室中朝向转子并且在其大致径向方向上。该装置在其室至少部分地充满部分造粒材料的同时进行操作。从这种槽的上冲侧延伸的挡板被定位成向下延伸进入腔室并接近其转子，以便使由转子的旋转运动携带的部分造粒材料偏转以接触新进入的片材，从而防止其偏离转子。

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