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公开(公告)号：US5706192A
公开(公告)日：1998-01-06
申请号：US558430
申请日：1995-11-16
申请人： Ira B. Schwartz , Kwok Yeung Tsang
发明人： Ira B. Schwartz , Kwok Yeung Tsang
CPC分类号： H03B27/00
摘要： A method and apparatus for accessing anti-phase states in a nonlinear system by globally coupling an array of oscillators. For N number of oscillators in the system, there are (N-1)| anti-phase (AP) states in phase space. AP states exist where each waveform is staggered out-of-phase with every other wave form. The system is controlled between AP states by means of a linear parameter and a hyper-switch. In an out-of-phase (OP) state the orbit remains on a basin boundary between or among AP states. As the linear parameter is decreased to a specific value, the orbit leaves the basin boundary and enters a canonical invariant region (CIR) towards an attractor. Each CIR contains one AP state and one attractor. Once the orbit has reached an attractor within the CIR it shall remain there until the linear parameter is increased and system again becomes unstable. Accordingly, by controlling the bias current in the system, the orbit may remain on the basin boundary until such time as the bias current is altered and forces the orbit into an invariant region thereby attaining an AP state. Furthermore, if the orbit is in a CIR, the bias current may be adjusted so that the system becomes unstable and returns to the basin boundary. This method of accessing different AP states in a system of globally coupled oscillators uses a hyperswitch together with control and release techniques for switching between or among AP states by pulsing a linear parameter.
摘要翻译： 一种通过全局耦合振荡器阵列来访问非线性系统中的反相态的方法和装置。 对于系统中的N个振荡器，有（N-1）！ 相位空间中的相位（AP）状态。 存在AP状态，其中每个波形与每隔一个波形与异相交错。 系统通过线性参数和超级开关在AP状态之间进行控制。 在异相（OP）状态下，轨道保持在AP状态之间或AP状态之间的流域边界。 随着线性参数降低到一个特定值，轨道离开盆地边界，并向吸引子进入规范不变区域（CIR）。 每个CIR包含一个AP状态和一个吸引子。 一旦轨道到达CIR内的吸引子，它将保持在那里，直到线性参数增加并且系统再次变得不稳定。 因此，通过控制系统中的偏置电流，轨道可以保留在流域边界上，直到偏置电流改变的时候，并且迫使轨道进入不变区域，从而实现AP状态。 此外，如果轨道在CIR中，则可以调节偏置电流，使得系统变得不稳定并返回到流域边界。 这种在全球耦合振荡器系统中访问不同AP状态的方法使用超开关以及通过脉冲线性参数在AP状态之间或之间切换的控制和释放技术。
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公开(公告)号：US20130289870A1
公开(公告)日：2013-10-31
申请号：US13868811
申请日：2013-04-23
IPC分类号： G06F17/00
摘要： A collaborative control method for tracking Lagrangian coherent structures (LCSs) and manifolds on flows employs at least three autonomous underwater vehicles (AUVs) each equipped with a local flow sensor. A first flow sensor is a tracking sensor and the other sensors are herding sensors for controlling and determining the actions of the tracking sensor. The AUVs are deployed in a body of water whereby the tracking sensor is positioned with respect to the herding sensors such that the herding sensors maintain a straddle formation across a boundary. A local flow velocity measurement is obtained from each AUV; and based on the local flow velocity measurements a global flow structure that is useful for plotting an optimal course for a vessel between two or more locations is predicted.
摘要翻译： 用于跟踪拉格朗日相干结构（LCS）和流形歧管的协同控制方法使用至少三个各自配备有本地流量传感器的自主水下航行器（AUV）。 第一流量传感器是跟踪传感器，其他传感器是用于控制和确定跟踪传感器的动作的放牧传感器。 AUV被部署在水体中，由此跟踪传感器相对于放牧传感器定位，使得牧草传感器保持跨越边界的跨越形成。 从每个AUV获得局部流速测量; 并且基于局部流速测量，预测了可用于绘制两个或更多个位置之间的容器的最佳过程的全局流动结构。
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公开(公告)号：US20130283926A1
公开(公告)日：2013-10-31
申请号：US13868796
申请日：2013-04-23
IPC分类号： G01F1/00
摘要： A collaborative control method for tracking Lagrangian coherent structures (LCSs) and manifolds on flows employs at least three autonomous sensors each equipped with a local flow sensor for sensing flow in a designated fluid medium, e.g. water or air. A first flow sensor is a tracking sensor while the other sensors are herding sensors for controlling and determining the actions of the tracking sensor. The tracking sensor is positioned with respect to the herding sensors in the fluid medium such that the herding sensors maintain a straddle formation across a boundary; obtaining a local fluid flow velocity measurement from each sensor. A global fluid flow structure is predicted based on the local flow velocity measurements. In a water medium, mobile autonomous underwater flow sensors may be deployed with each tethered to a watersurface craft.
摘要翻译： 用于跟踪拉格朗日相干结构（LCS）和流形歧管的协同控制方法采用至少三个自主传感器，每个自动传感器配备有局部流量传感器，用于感测指定的流体介质中的流动。 水或空气。 第一流量传感器是跟踪传感器，而其他传感器是用于控制和确定跟踪传感器的动作的放牧传感器。 跟踪传感器相对于流体介质中的放牧传感器定位，使得牧草传感器保持跨越边界的跨骑地形; 从每个传感器获得局部流体流速测量。 基于局部流速测量预测全局流体流动结构。 在水介质中，可以部署移动式自主水下流量传感器，每个系统连接到水面工具。
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公开(公告)号：US06763271B2
公开(公告)日：2004-07-13
申请号：US09834922
申请日：2001-04-12
申请人： Ioana Triandaf , Ira B. Schwartz
发明人： Ioana Triandaf , Ira B. Schwartz
IPC分类号： G05B1302
CPC分类号： G05B13/024 , G05B5/01
摘要： A control method and system are provided to sustain chaos in a nonlinear dynamic system. A sustained transient that is tracked as a system parameter is substantially varied thereby allowing sustained chaotic transients to exist far away from the crisis parameter values. The method includes targeting points near a chaotic transient once the iterates reach a neighborhood of an undesired attractor. Targeting is done so that the natural dynamics of the system would not engage again the iterations and chaotic motion. A brief parameter fluctuation forces the attractor to be a repeller so that a point which lies on the previously existing chaotic transient can be targeted. Consequently, instead of landing on the attractor, the iterations will reach a region of phase space where a chaotic transient is present, causing the chaotic motion to be reexcited.
摘要翻译： 提供了一种控制方法和系统，以在非线性动态系统中维持混沌。 被跟踪为系统参数的持续瞬变基本上是变化的，从而允许持续的混沌瞬变远离危机参数值存在。 该方法包括一旦迭代到达不期望的吸引子的邻域，就瞄准混沌瞬态附近的点。 目标是实现系统的自然动力学不再重复迭代和混沌运动。 一个简单的参数波动迫使吸引子成为一个推斥者，这样一个位于先前存在的混沌瞬变的点就可以被定位。 因此，迭代将不再落在吸引子上，而是到达存在混沌瞬变的相空间区域，导致混沌运动被重新激活。
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公开(公告)号：USH1945H1
公开(公告)日：2001-03-06
申请号：US09204341
申请日：1998-12-04
申请人： Ira B. Schwartz
发明人： Ira B. Schwartz
IPC分类号： H04L900
摘要： A method and apparatus for sustaining chaos in a system by using the natural dynamics of the system to redirect flow towards a chaotic region along unstable manifolds of basin boundary saddles by utilizing small, infrequent parameter perturbations. The perturbations are determined based on the location of an unstable state, which is used as a control reference. The location of the unstable state, which is unobservable, is estimated by calculating a theoretical branch connecting the current state of the system to the target unstable state.
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公开(公告)号：US5442510A
公开(公告)日：1995-08-15
申请号：US80155
申请日：1993-06-23
CPC分类号： G05B5/01
摘要： A control system for tracking the operation of a nonlinear system has two parts: a tracking subsystem and a controlling subsystem. The tracking subsystem generates a parametric signal and the controlling subsystem controls and stabilizes the nonlinear system operating under operating conditions corresponding to that parametric signal. The controlling subsystem includes a modulator responsive to the parametric signal and to a feedback signal for producing and applying an input signal to the nonlinear system to cause the nonlinear system to produce an output signal. The controlling subsystem also includes means responsive to the output signal for producing the feedback signal. The controlling subsystem also includes correcting means, operable when the time average of the feedback signal is substantially nonzero, for bringing the time average of the feedback signal from a substantially nonzero value to a substantially zero value, and maintaining means, operable when the time average of the feedback signal is substantially zero, for maintaining the time average of the feedback signal over the selected period of time at a substantially zero value.
摘要翻译： 用于跟踪非线性系统的操作的控制系统具有跟踪子系统和控制子系统两部分。 跟踪子系统产生参数信号，控制子系统控制和稳定在与该参数信号对应的工作条件下工作的非线性系统。 控制子系统包括响应于参数信号的调制器和用于产生并将输入信号施加到非线性系统以使非线性系统产生输出信号的反馈信号。 控制子系统还包括响应于输出信号产生反馈信号的装置。 控制子系统还包括校正装置，当反馈信号的时间平均值基本上不为零时可操作，用于将反馈信号的时间平均值从基本上非零的值提供到基本为零的值;以及维持装置，当时间平均 反馈信号基本上为零，用于将所选择的时间段内的反馈信号的时间平均值维持在基本上为零的值。
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公开(公告)号：US08972164B2
公开(公告)日：2015-03-03
申请号：US13868796
申请日：2013-04-23
摘要： A collaborative control method for tracking Lagrangian coherent structures (LCSs) and manifolds on flows employs at least three autonomous sensors each equipped with a local flow sensor for sensing flow in a designated fluid medium, e.g. water or air. A first flow sensor is a tracking sensor while the other sensors are herding sensors for controlling and determining the actions of the tracking sensor. The tracking sensor is positioned with respect to the herding sensors in the fluid medium such that the herding sensors maintain a straddle formation across a boundary; obtaining a local fluid flow velocity measurement from each sensor. A global fluid flow structure is predicted based on the local flow velocity measurements. In a water medium, mobile autonomous underwater flow sensors may be deployed with each tethered to a watersurface craft.
摘要翻译： 用于跟踪拉格朗日相干结构（LCS）和流形歧管的协同控制方法采用至少三个自主传感器，每个自动传感器配备有局部流量传感器，用于感测指定的流体介质中的流动。 水或空气。 第一流量传感器是跟踪传感器，而其他传感器是用于控制和确定跟踪传感器的动作的放牧传感器。 跟踪传感器相对于流体介质中的放牧传感器定位，使得牧草传感器保持跨越边界的跨骑地形; 从每个传感器获得局部流体流速测量。 基于局部流速测量预测全局流体流动结构。 在水介质中，可以部署移动式自主水下流量传感器，每个系统连接到水面工具。
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公开(公告)号：US08903641B2
公开(公告)日：2014-12-02
申请号：US13868811
申请日：2013-04-23
摘要： A collaborative control method for tracking Lagrangian coherent structures (LCSs) and manifolds on flows employs at least three autonomous underwater vehicles (AUVs) each equipped with a local flow sensor. A first flow sensor is a tracking sensor and the other sensors are herding sensors for controlling and determining the actions of the tracking sensor. The AUVs are deployed in a body of water whereby the tracking sensor is positioned with respect to the herding sensors such that the herding sensors maintain a straddle formation across a boundary. A local flow velocity measurement is obtained from each AUV; and based on the local flow velocity measurements a global flow structure that is useful for plotting an optimal course for a vessel between two or more locations is predicted.
摘要翻译： 用于跟踪拉格朗日相干结构（LCS）和流形歧管的协同控制方法使用至少三个各自配备有本地流量传感器的自主水下航行器（AUV）。 第一流量传感器是跟踪传感器，其他传感器是用于控制和确定跟踪传感器的动作的放牧传感器。 AUV被部署在水体中，由此跟踪传感器相对于放牧传感器定位，使得牧草传感器保持跨越边界的跨越形成。 从每个AUV获得局部流速测量; 并且基于局部流速测量，预测了可用于绘制两个或更多个位置之间的容器的最佳过程的全局流动结构。
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公开(公告)号：US07899097B1
公开(公告)日：2011-03-01
申请号：US12328222
申请日：2008-12-04
申请人： Leah B Shaw , Ira B Schwartz
发明人： Leah B Shaw , Ira B Schwartz
CPC分类号： H01S3/06791 , H01S3/082 , H01S3/1304 , H01S3/1307 , H01S3/23
摘要： A synchronized delay-coupled laser system includes at least two lasers. Each laser includes a laser fiber with a coupling means for coupling to a laser pump. The lasers are coupled to each other by way of two optical fibers. Each laser also includes a self-feedback section. The optical fibers interconnecting the lasers and the self-feedback sections are configured to provide a substantially identical delay time. The lasers may be ring lasers, may be semi-conductor or solid state, and may include components such as a fiber amplifier, a polarization controller, and a nonlinear oscillator. The system includes multiple interconnected lasers and also employ cross-coupling connections.
摘要翻译： 同步延迟耦合激光系统包括至少两个激光器。 每个激光器包括具有用于耦合到激光泵的耦合装置的激光光纤。 激光器通过两根光纤相互耦合。 每个激光器还包括自反馈部分。 将激光器和自反馈部分互连的光纤被配置为提供基本相同的延迟时间。 激光器可以是环形激光器，可以是半导体或固态，并且可以包括诸如光纤放大器，偏振控制器和非线性振荡器的部件。 该系统包括多个互连的激光器，并且还采用交叉耦合连接。
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