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公开(公告)号：US11636238B2
公开(公告)日：2023-04-25
申请号：US16253728
申请日：2019-01-22
申请人： The MathWorks, Inc.
摘要： Model elements of an executable model, representing a physical system, are partitioned into one or more linear portions and one or more nonlinear portions. Simulating behavior of the physical system, by executing the model, includes, for each of multiple simulation time intervals, for a first nonlinear portion, computing a correlation matrix characterizing noise associated with one or more ports of the model. A scattering matrix corresponds to a portion of the physical system represented by the first nonlinear portion without accounting for any noise within the portion of the physical system. The correlation matrix is derived from the scattering matrix based on noise within the portion of the physical system. Noise sources representing noise within the portion of the physical system are identified based on the correlation matrix. At least one characteristic of noise associated with each noise source is computed, and noise characteristics are output at selected ports.
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公开(公告)号：US20200160750A1
公开(公告)日：2020-05-21
申请号：US16657972
申请日：2019-10-18
发明人： Robert LiKamWa , Shahabedin Sagheb , Alireza Bahremand , Byron Lahey , Frank Wencheng Liu , Assegid Kidane
摘要： A haptic feedback system to stimulate physical sensation of handling a fluid in virtual spaces. The system includes a physical vessel containing a solid object and mechanical means to move the solid object therein, a virtual reality module to track a position of the physical vessel and a corresponding virtual vessel, logic to simulate a fluid contained in the virtual vessel based on the tracked position of the virtual vessel, logic to calculate coordinates of a center of gravity for the simulated fluid based on the tracked position of the virtual vessel, logic to translate the calculated coordinates of the center of gravity for the simulated fluid into cylindrical coordinates to which to move the solid object in the physical vessel, and logic to send instructions to the mechanical means to move the solid object in the physical vessel based on the cylindrical coordinates to shift the weight of the physical vessel in accordance with the center of gravity of the simulated fluid in the virtual vessel.
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公开(公告)号：US20190314811A1
公开(公告)日：2019-10-17
申请号：US16381535
申请日：2019-04-11
发明人： LISA HOLLAND
摘要： Described herein are embodiments of a microfluidic device configured to facilitate conceptualization of scientific principles and uses thereof.
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公开(公告)号：US20190096284A1
公开(公告)日：2019-03-28
申请号：US16137151
申请日：2018-09-20
申请人： Brainquake Inc.
发明人： Dariush Afshar , Pamela Briskman , Keith Devlin , Steve Mays , Michael Romero , Randy Weiner
IPC分类号： G09B23/12
摘要： A liquid flow instructional system for presenting a proportions problem and for allowing the proportions problem to be solved comprises an input container and a plurality of output containers selectively and fluidly coupled to the input container. The system has an adjustable valve having a plurality of configurable regions. Each of the plurality of configurable regions corresponds to one of the plurality of output containers. An activable switch is provided for initiating flow of liquid from the input container to the plurality of output containers in accordance with a user configuration of the plurality of configurable regions. The proportions problem is solvable by filling each of the plurality of output containers to capacity without spillage. The correspondence between the plurality of configurable regions and the plurality of output containers is indicated by a visible indicator.
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公开(公告)号：US10039989B2
公开(公告)日：2018-08-07
申请号：US15502503
申请日：2015-08-31
发明人： Cory McGregor
摘要： An apparatus or educational toy comprising a main body (120, 220, 320, 520) and a drive mechanism (140, 240, 340, 540), wherein the drive mechanism (140, 240, 340, 540) comprises a reservoir (142, 242, 342) for storing a driving liquid, a discharge outlet (144, 244a, 244b, 344, 544a, 544b) through which the driving liquid is discharged from the main body (120, 220, 320, 520) to generate a driving thrust, a liquid delivery path (146, 246a, 246b, 346) for delivering the driving liquid for a reservoir outlet (148, 348, 448) to the discharge outlet (144, 244a, 244b, 344, 544a, 544b), and a threshold setting device (147, 347); and wherein the threshold setting device (147, 347) sets a threshold thrust level so that the driving liquid is to pass from the reservoir (142, 242, 342) and discharged from the discharge outlet (144, 244a, 244b, 344, 544a, 544b) upon reaching the threshold thrust level during operation.
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公开(公告)号：US09480906B1
公开(公告)日：2016-11-01
申请号：US14998587
申请日：2016-01-21
申请人： William H. Peters , Kevin H. Peters
发明人： William H. Peters , Kevin H. Peters
CPC分类号： A63F9/14 , A63F2250/0414 , G09B23/12
摘要： Provided is a water raceway device comprising a tub and a raceway insert. The tub is adapted to contain water to a functional depth, is open at the top, and is bounded by a set of side walls and a set of end walls. The raceway insert has a pair of dividers each having a first end, and a base. The base is engaged with the first ends of the dividers, has supports adapted for supporting the base on the tub, has a pair of slots elongated to define a forward direction and a rearward direction, each slot having slidably engaged therewith a handle, the handle having a paddle pivotably mounted thereon, and wherein each paddle can be moved in the forward direction or in the rearward direction. The dividers and the side walls define within the tub, wave sluices and a current sluice.
摘要翻译： 本发明提供一种包括桶和滚道插入件的水滚道装置。 浴缸适于将水容纳至功能深度，在顶部敞开，并且由一组侧壁和一组端壁限定。 滚道插入件具有一对分隔件，每个分隔件具有第一端和底座。 基座与分隔件的第一端接合，具有用于支撑在桶上的底座的支撑件，具有一对细长的槽以限定向前方向和向后方向，每个槽可滑动地与其接合，手柄 具有可枢转地安装在其上的桨叶，并且其中每个桨叶可以向前方向或向后方向移动。 分隔件和侧壁在缸内定义，波浪闸和当前闸门。
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7.发明申请公开(公告)号：US20050282130A1
公开(公告)日：2005-12-22
申请号：US11141316
申请日：2005-06-01
申请人： Tomohide Ueyama , Yasunori Ichikawa
发明人： Tomohide Ueyama , Yasunori Ichikawa
CPC分类号： G09B23/12
摘要： A method for experiment using a scientific phenomenon evaluation apparatus in which at least two reservoirs constituting an inlet and an outlet communicate with each other through a minute channel having a sectional area of 1 mm2 or less, the method comprising the steps of a preparatory step of removing air from the minute channel in advance by causing an inactive dummy liquid which does not react with an experimental liquid for performing an experiment to flow into and fill the minute channel, the preparatory step being performed at least one time and an experiment step of supplying the experimental liquid to the reservoir on the inlet side and feeding the experimental liquid into the minute channel by using a liquid feed device to cause the dummy liquid filling the minute channel to flow toward the reservoir on the outlet side.
摘要翻译： 一种使用科学现象评价装置的实验方法，其中构成入口和出口的至少两个储存器通过截面积为1mm 2以下的微通道彼此连通，该方法 其特征在于，具有以下步骤：通过使与所述实验用液体不反应的无效虚拟液体预先从所述微通道中除去空气而进入并填充所述分钟通道，所述准备步骤至少进行 一次和实验步骤，将实验液体供应到入口侧的储存器，并通过使用液体进料装置将实验液体进料到微通道中，以使填充微通道的虚拟液体朝向出口上的储存器流动 侧。
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公开(公告)号：US20050191602A1
公开(公告)日：2005-09-01
申请号：US10790166
申请日：2004-03-01
申请人： Richard Lewellen
发明人： Richard Lewellen
CPC分类号： G09B23/12
摘要： This is a kit for demonstrating Archimedes' principle and comprises a tub having an overflow spout, such that when a fluid level reaches the overflow spout, all additional fluid added to the tub will flow out of the overflow spout; and a stable boat sized to float in the tub without touching the sides of the tub. The kit may further comprise a balance beam which can balance on an edge of the tub, wherein one end of the balance beam has an attachment mechanism for attaching a counter weight, and the other end has an attachment mechanism for attaching a sample weight such that when the sample weight attached to this end, and the balance beam is balancing on the too edge of the tub, the sample weight will be submerged in the fluid in the tub. There is also provided a method for using this kit to demonstrate Archimedes' principle both for the buoyancy of a floating body, and the buoyancy for objects that do not float.
摘要翻译： 这是用于演示阿基米德原理的工具包，其中包括具有溢流口的桶，使得当液面达到溢流口时，添加到桶中的所有附加流体将流出溢流口; 和一个稳定的船只大小可以漂浮在浴缸中，而不会碰到浴缸的两侧。 该套件可以进一步包括平衡梁，该平衡梁可以在桶的边缘上平衡，其中平衡梁的一端具有用于附接配重的附接机构，另一端具有用于附接样本重物的附接机构， 当连接到该端的样品重量和平衡梁在桶的太边上平衡时，样品重量将被浸没在桶中的流体中。 还提供了一种使用该试剂盒来证明阿基米德对浮体浮力的原理以及不漂浮的物体的浮力的方法。
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9.发明授权Method and system for generating artificial tornadoes and related vortex phenomena 失效生成人造龙卷风及相关涡流现象的方法和系统
公开(公告)号：US5971765A
公开(公告)日：1999-10-26
申请号：US621060
申请日：1996-03-22
申请人： James Gill , Dylan Hixon , James Lux , Martin Becker
发明人： James Gill , Dylan Hixon , James Lux , Martin Becker
CPC分类号： F15D1/00 , G09B23/12 , A63F2009/0087 , A63F7/045
摘要： A system and method for generating tornadoes and other vortex phenomen in an open air, free space enviroment is disclosed. The system includes a flat surface or deck suspended above the ground, a circular hole in the center of the deck, a means for creating an updraft through the hole in the deck and fans or other air moving means for creating a swirling air flow. Preferably, the fans for swirling the air are angled approximately 45 degrees relative to the vertical axis of the updraft flow through the center hole. For swirling the air at higher elevations, as well as at ground level, a multi level fan arrangement having the layers of fans spaced relative to the deck is used. Alternatively, a single level of fans are used in conjunction with louvers or vanes for deflecting the blown air into a fan shape. In another embodiment of the present invention, tangential flow is established by using a multiplicity of tubes for returning air flow from a plenum above an updraft fan. Higher elevation air swirling is accomplished by providing vents in the return columns along the entire length. The vents can be holes in the columns or arrangements of adjustable or fixed vanes. Controls, including valves and shutters, are positioned in the return tubes for adjusting air flow patterns. The present system and method does not require containing chambers to remove external perturbations and to constrain air flow, actively, as opposed to passively, creates the swirling tangential flow, can be operated or performed indoors or outdoors and works with an asymmetric air flow.
摘要翻译： 公开了一种用于在露天，自由空间环境中产生龙卷风和其他涡流现象的系统和方法。 该系统包括悬挂在地面上方的平坦表面或甲板，甲板中心的圆形孔，通过甲板上的孔产生上升气流的装置，以及用于产生旋转空气流的风扇或其它空气移动装置。 优选地，用于旋转空气的风扇相对于通过中心孔的上升气流的垂直轴线成大约45度。 为了在较高海拔以及地面上旋转空气，使用具有相对于甲板间隔开的风扇层的多级风扇装置。 或者，单级风扇与百叶窗或叶片一起使用，以将吹入的空气偏转成扇形。 在本发明的另一个实施例中，通过使用多个管来从上升气流风扇上方的气室返回空气流来建立切向流动。 通过在整个长度上的返回柱中提供通风口来实现较高的高程空气涡流。 通风口可以是可调节或固定叶片的列或排列中的孔。 控制器，包括阀门和百叶窗，位于回流管中，用于调节气流模式。 本系统和方法不需要包含室以去除外部扰动并且主动地限制空气流动，而不是被动地产生旋流切向流，可以在室内或室外操作或执行，并且与非对称空气流一起工作。
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公开(公告)号：US5800300A
公开(公告)日：1998-09-01
申请号：US814797
申请日：1997-03-10
申请人： Ellen Childress
发明人： Ellen Childress
摘要： A device for exploring the transferring of motion from one body to another body which utilizes a motion transfer surface is presented. The device is a hollow structure for receiving an object which has a motion transfer surface on its exterior. The hollow structure may be a tube or a polygon, such as for example a pyramid. The hollow structure can be opened and closed so that the object can be secured therein. Preferably, the object is spherical. Further, the object may have a gyroscope seated within its interior. The gyroscope may be activated by waves having a frequency, such as for example sound waves or electronic waves. Further objects, each having a motion transfer surface may also be seated within the hollow structure. Preferably where two or more objects are present, each object has a motion transfer surface and is in frictional contact with another object. Additionally, a toothed ribbon suitable for use as a motion transfer surface is described.
摘要翻译： 提出了一种用于探索运动从一个身体转移到另一个使用运动传递表面的身体的装置。 该装置是用于接收在其外部具有运动转移表面的物体的中空结构。 中空结构可以是管或多边形，例如金字塔。 中空结构可以打开和关闭，从而可以将物体固定在其中。 优选地，物体是球形的。 此外，物体可以具有坐在其内部的陀螺仪。 可以通过具有频率的波，例如声波或电子波来激活陀螺仪。 每个具有运动传递表面的另外的目的也可以坐在中空结构内。 优选地，当存在两个或多个物体时，每个物体具有运动传递表面并且与另一物体摩擦接触。 此外，描述了适合用作运动传递表面的齿形带。
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