公开(公告)号：US06834109B1

公开(公告)日：2004-12-21

申请号：US09710610

申请日：2000-11-10

申请人： Thomas E. Paré, Jr. ,  Michail Tsatsanis ,  Ioannis Kanellakopoulos ,  Mark Alan Erickson ,  Cecilia Gabriela Galarza ,  James W. Waite ,  Daniel Joseph Hernandez ,  Sunil C. Shah ,  Ming Gu ,  Norman Man Leung Yuen ,  Heberly Rosario ,  Di Lin ,  Fernando Lopez-de-Victoria

发明人： Thomas E. Paré, Jr. ,  Michail Tsatsanis ,  Ioannis Kanellakopoulos ,  Mark Alan Erickson ,  Cecilia Gabriela Galarza ,  James W. Waite ,  Daniel Joseph Hernandez ,  Sunil C. Shah ,  Ming Gu ,  Norman Man Leung Yuen ,  Heberly Rosario ,  Di Lin ,  Fernando Lopez-de-Victoria

IPC分类号： H04M176

CPC分类号： H04L41/046 ,  H04B3/32 ,  H04L1/20 ,  H04L25/0204 ,  H04L25/03305 ,  H04L27/2608 ,  H04L41/06 ,  H04L41/142 ,  H04L41/145 ,  H04L2025/03414

摘要： The present invention includes a method and system for compensating for cross-talk interference in communication systems. The method includes estimation of the interfering signals. Further, the method includes performing a compensation operation on at least one interfering signal.

摘要翻译： 本发明包括用于补偿通信系统中的串扰干扰的方法和系统。 该方法包括干扰信号的估计。 此外，该方法包括对至少一个干扰信号执行补偿操作。

公开(公告)号：US06813240B1

公开(公告)日：2004-11-02

申请号：US09330436

申请日：1999-06-11

申请人： Jasvantrai C. Shah

发明人： Jasvantrai C. Shah

IPC分类号： H04L1226

CPC分类号： H04L41/0677 ,  H04L41/0663 ,  H04L43/0817

摘要： In a telecommunications network provisioned with a path based distributed restoration algorithm, upon the detection of a failure in a link, each of the custodial nodes of the failed link sends a special message to the respective end nodes. These end nodes communicate with each other over a communications network independent of the telecommunications network and, in turn, inform the custodial nodes of the identity of the other custodial nodes. By providing each custodial node with the knowledge that its adjacent node is its opposing custodial node, any functional link that cross-connects the custodial nodes is deemed to be of poor quality and, therefore, should not be used as a part of an alternate path for rerouting the disrupted traffic, unless no other alternate path could be found.

摘要翻译： 在提供了基于路径的分布式恢复算法的电信网络中，在检测到链路中的故障时，故障链路的每个保管节点向相应的末端节点发送特殊消息。 这些端节点通过独立于电信网络的通信网络彼此通信，并且又向保管节点通知其他保管节点的身份。 通过为每个保管节点提供其相邻节点是其相对的保管节点的知识，将保管节点交叉连接的任何功能链路被认为质量差，因此不应被用作备用路径的一部分 用于重新路由中断的流量，除非没有找到其他备用路径。

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。

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。

公开(公告)号：US06741414B1

公开(公告)日：2004-05-25

申请号：US09595455

申请日：2000-06-15

申请人： Stephen Boyd ,  Sunil C. Shah ,  Mark Erickson ,  Ioannis Kanellakopoulos

发明人： Stephen Boyd ,  Sunil C. Shah ,  Mark Erickson ,  Ioannis Kanellakopoulos

IPC分类号： G11B1546

CPC分类号： G11B15/467

摘要： A method and system for joint spindle speed and head position control in rotating media storage systems are described. A controller changes the rotation speed of a spindle assembly based upon the position information of a desired data sector. This controller may also control the actuator assembly based upon the position information of the desired data sector.

摘要翻译： 描述了旋转介质存储系统中联合主轴转速和磁头位置控制的方法和系统。 控制器基于期望的数据扇区的位置信息改变主轴组件的旋转速度。 该控制器还可以基于所需数据扇区的位置信息来控制致动器组件。

公开(公告)号：US06676215B1

公开(公告)日：2004-01-13

申请号：US10419434

申请日：2003-04-21

申请人： Mehendra C. Shah ,  Arthur A. Ezra

发明人： Mehendra C. Shah ,  Arthur A. Ezra

IPC分类号： A47C3025

CPC分类号： A47C7/028 ,  A47C7/14 ,  A61G5/1043 ,  A61G5/1045 ,  A61G7/0573 ,  Y10S5/933

摘要： A seating apparatus for supporting a lower body region of an immobilized person for avoidance and relief of decubitus ulcers which provides regular intervals of seating pressure reduction below a predetermined seating pressure for a predetermined relief period. The seating apparatus includes a plurality of slats/cushions which may be displaced between a first support position wherein each of the slats/cushions is co-planar with a defined plane and a second displaced position wherein each of the slats/cushions is displaced a distance D from the defined plane for the predetermined relief period whereby capillary blood pressure is reduced below the predetermined seating pressure in the unsupported portion of the lower body region.

摘要翻译： 一种用于支撑固定的人的下部身体区域的座​​椅装置，用于避免和减轻褥疮溃疡，其在预定的休息时间内提供低于预定的就座压力的定期间隔的压力降低。 座椅装置包括多个板条/衬垫，其可以在第一支撑位置和第二位移位置之间移动，其中每个板条/衬垫与限定的平面共同平齐，并且第二位移位置，其中每个板条/衬垫位移一定距离 D从预定的平面延伸预定的缓解期，由此毛细血管血压降低到低体区的未支撑部分中的预定就位压力以下。

公开(公告)号：US06289508B1

公开(公告)日：2001-09-11

申请号：US09594462

申请日：2000-06-14

申请人： Mark A. Erickson ,  Pradeep Pandey ,  Sunil C. Shah ,  Thorkell Gudmundsson

发明人： Mark A. Erickson ,  Pradeep Pandey ,  Sunil C. Shah ,  Thorkell Gudmundsson

IPC分类号： G06F945

CPC分类号： G05B13/042 ,  G05B13/04 ,  G05B17/02

摘要： The present invention is a method and apparatus for dynamic optimization of a dynamic physical system having a device under control and a controller along with a modeling system having an estimator and a constrained nonlinear program. The time varying trajectories of the dynamic physical system are parameterized and run through the modeling system in order to produce a set of optimal time varying setpoint trajectories to be used in the dynamic physical system. The optimal time varying setpoint trajectories optimize the physical system to produce the desired end result (or product) of the dynamic physical system.

摘要翻译： 本发明是用于动态优化动态物理系统的方法和装置，其具有被控制的装置和控制器以及具有估计器和约束非线性程序的建模系统。 动态物理系统的时变轨迹被参数化并运行在建模系统中，以便产生要在动态物理系统中使用的一组最佳时变设定点轨迹。 最优时变设定点轨迹优化物理系统以产生动态物理系统的期望最终结果（或产品）。

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。

公开(公告)号：US5996594A

公开(公告)日：1999-12-07

申请号：US666189

申请日：1996-03-19

申请人： Sudipto Ranendra Roy ,  Iqbal Ali ,  Gregory B. Shinn ,  Rajani C. Shah ,  Shelley H. Peterman ,  Srini Raghavan

发明人： Sudipto Ranendra Roy ,  Iqbal Ali ,  Gregory B. Shinn ,  Rajani C. Shah ,  Shelley H. Peterman ,  Srini Raghavan

IPC分类号： B08B1/04 ,  B08B3/12 ,  B24B37/34 ,  B24D13/14 ,  H01L21/00 ,  H01L21/306 ,  B08B1/02 ,  C03C15/00 ,  C23G1/02

CPC分类号： H01L21/67028 ,  B08B1/04 ,  B08B3/12 ,  B24B37/345 ,  B24D13/145 ,  H01L21/02074 ,  Y10S134/902

摘要： A post chemical-mechanical polishing clean-up process. Particles and ionic and metallic contaminants remaining on wafer 32 surface after CMP are removed and scratches are smoothed. The wafer 32 may be subjected to a high pressure/high rotational speed rinse at spindle rinse station 42 followed by buffing of the wafer 32 on a second polishing platen 38. If desired, a second high pressure/high speed rinse at spindle rinse station 42 may be performed after the buffing step. The wafer 32 may then be then transferred to a tank 50 for a megasonic bath and after the megasonic bath, the wafer 32 is transferred to a scrubber 44, which scrubs both surfaces of the wafer 32 with brushes and then spins the wafer 32 dry as spin station 84. All transfers are performed in a solution such as DI water to prevent drying of slurry on the wafer surface.

摘要翻译： 后化学机械抛光清理过程。 在CMP之后残留在晶片32表面上的颗粒和离子和金属污染物被除去并且刮擦变得平滑。 晶片32可以在主轴漂洗站42处进行高压/高转速冲洗，随后在第二研磨台板38上抛光晶片32.如果需要，在主轴漂洗站42处进行第二次高压/高速冲洗 可以在抛光步骤之后进行。 然后可以将晶片32转移到用于兆声波槽的箱50中，并且在超声波浴之后，将晶片32转移到洗涤器44，擦洗器44用刷子擦洗晶片32的两个表面，然后将晶片32旋转干燥，如 旋转站84.所有转移在诸如去离子水的溶液中进行以防止在晶片表面上的浆料干燥。

公开(公告)号：US5636203A

公开(公告)日：1997-06-03

申请号：US481984

申请日：1995-06-07

申请人： Jasvantrai C. Shah

发明人： Jasvantrai C. Shah

IPC分类号： H04J3/00 ,  H04J3/14 ,  H04L1/24 ,  H04M3/08 ,  H04M3/22 ,  H04Q3/00 ,  H04L1/00

CPC分类号： H04L1/24 ,  H04M3/08 ,  H04M3/2254 ,  H04Q3/0079 ,  Y10S370/907

摘要： All nodes on a malfunctioned communications circuit of a communications network are enabled to identify the location of the fault causing the circuit malfunction. Upon detecting an incoming signal impairment on the circuit, each node on the circuit first assumes that the failure is on the segment of the circuit immediately upstream thereof, and accordingly sends an identifier of that fault location to its downstream nodes. Each node periodically repeats sending its identifier to its downstream nodes. A node that has sent its identifier at least a predetermined number of times without receiving a similar identifier from another node upstream thereof or without having detected a normal signal during all that time is determined to have sent out an identifier that correctly identifies the fault location on the communications circuit. If, on the other hand, a node receives a fault location identifier from a node upstream thereof before it has completed sending its identifier a predetermined number of times, then that node would stop sending its own identifier downstream. And upon receiving the same fault location identifier from an upstream node a predetermined number of times, that node further recognizes that the received identifier represents the correct location of the fault. The fault location identification process is terminated if the signal returns to the normal condition during the process.

摘要翻译： 通信网络故障通信电路上的所有节点都能够识别导致电路故障的故障位置。 在检测到电路上的输入信号损害时，电路上的每个节点首先假定故障处于紧接其上游的电路的段上，并因此向其下游节点发送该故障位置的标识符。 每个节点周期性地重复向其下游节点发送其标识符。 已经发送其标识符至少预定次数的节点，而没有从其上游的另一个节点接收到类似的标识符，或者在所有时间内没有检测到正常信号，已经发送出正确地识别故障位置的标识符 通信电路。 另一方面，如果在其已经完成向其标识符发送预定次数之前，节点从其上游的节点接收故障位置标识符，则该节点将停止向下游发送其自己的标识符。 并且在从上游节点接收到相同的故障位置标识符预定次数时，该节点进一步识别接收的标识符表示故障的正确位置。 如果信号在该过程中返回到正常状态，则故障位置识别过程终止。