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公开(公告)号：US4929412A
公开(公告)日：1990-05-29
申请号：US336941
申请日：1989-04-11
IPC分类号： G21C7/113
CPC分类号： G21C7/113 , G21Y2002/201 , G21Y2002/301 , G21Y2004/30 , Y02E30/39
摘要： An apparatus and process for control rod assembly and construction for a nuclear reactor is disclosed wherein the control rod is of cruciform configuration having a plurality of and preferably four flat planar members. Each planar member is made up with an assembly of square cross sectioned tubular members. Each square cross sectioned tubular member includes a defined cylindrical center and a constant thickness surrounding tubular metallic shell to provide the contained neutron absorbing materials in a cylindrically shaped pressure vessel. The constant thickness surrounding tubular shell constituting the cylindrical shaped pressure vessel has four corner sections added to generate a modified square exterior profile. These added four corner sections comprise an addition to the tubular side wall thickness of the shell. Appropriate chamfers and rounding are provided to the square profile to impart both stress relief and convenient points for automated welding between side-by-side square sections. The square cross sectioned tubular members when welded together extend axially and longitudinally the length of the control rod in the direction of control rod movement and fluid flow. The square cross sectioned tubular members are filled with a neutron absorbing material, plugged at both ends, and fastened by welding in side-by-side relation to form the planar control rod members of the required cruciform shape. These square cross sectioned tubular members as welded in side-by-side relation are in integral portion of the longitudinal support structure of the control rod and fasten and interconnect the handle at the top of the control rod and a conventional velocity limiting device at the bottom of the control rod. The fastening of the handles and velocity limiting device at the respective top and bottom provides a secondary and supplemental seal to primary plugs containing the neutron absorbing material. If needed for enhanced life, provision is made for the incorporation of a hafnium plate in a rectangular sectioned tube adjacent the handle at upper end of the control rod, this tip being variable in length dependent upon individual control rod requirements. Thus square sectioned tubular members form an improved poison containing cylindrical volume for providing resultant improved control rod worth and increased in service life time in moderating and shutting down nuclear reactions. Consequently, the disclosed construction can be used both for conventional control rods as well as for control rod configured for control cell locations.
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公开(公告)号：US4902470A
公开(公告)日：1990-02-20
申请号：US31633
申请日：1987-03-30
IPC分类号： G21C7/113
CPC分类号： G21C7/113 , G21Y2002/201 , G21Y2002/301 , G21Y2004/30 , Y02E30/39
摘要： An apparatus and process for control rod assembly and construction for a nuclear reactor is disclosed wherein the control rod is of cruciform configuration having a plurality of and preferably four flat planar members. Each planar member is made up with an assembly of square cross sectioned tubular members. Each square cross sectioned tubular member includes a defined cylindrical center and a constant thickness surrounding tubular metallic shell to provide the contained neutron absorbing materials in a cylindrically shaped pressure vessel. The constant thickness surrounding tubular shell constituting the cylindrical shaped pressure vessel has four corner sections added to generate a modified square exterior profile. These added four corner sections comprise an addition to the tubular side wall thickness of the shell. Appropriate chamfers and rounding are provided to the square profile to impart both stress relief and convenient points for automated welding between side-by-side square sections. The square cross sectioned tubular members when welded together extend axially and longitudinally the length of the control rod in the direction of control rod movement and fluid flow. The square cross sectioned tubular members are filled with a neutron absorbing material, plugged at both ends, and fastened by welding in side-by-side relation to form the planar control rod members of the required cruciform shape. These square cross sectioned tubular members as welded in side-by-side relation are an integral portion of the longitudinal support structure of the control rod and fasten and interconnect the handle at the top of the control rod and a conventional velocity limiting device at the bottom of the control rod. The fastening of the handles and velocity limiting device at the respective top and bottom provides a secondary and supplemental seal to primary plugs containing the neutron absorbing material. If needed for enhanced life, provision is made for the incorporation of a hafnium plate in a rectangular sectioned tube adjacent the handle at upper end of the control rod, this tip being variable in length dependent upon individual control rod requirements. Thus square sectioned tubular members form an improved poison containing cylindrical volume for providing resultant improved control rod worth and increased in service life time in moderating and shutting down nuclear reactions. Consequently, the disclosed construction can be used both for conventional control rods as well as for control rod configured for control cell locations.
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公开(公告)号：US4624826A
公开(公告)日：1986-11-25
申请号：US646761
申请日：1984-09-04
申请人： James E. Cearley , John C. Carruth , Robert C. Dixon , Stephanie S. Spencer , Jaime A. Zuloaga, Jr.
发明人： James E. Cearley , John C. Carruth , Robert C. Dixon , Stephanie S. Spencer , Jaime A. Zuloaga, Jr.
CPC分类号： G21C9/02 , G21C7/16 , G21Y2002/201 , G21Y2004/30 , G21Y2004/305 , Y02E30/39
摘要： A velocity limiting device providing greater resistance to motion through a fluid in one direction than in the opposite direction. The device includes a toroidally shaped control member having a smooth generally conical surface on one side for low resistance movement through the fluid in the one direction. On its opposite side the control member is formed with at least one groove providing a concave surface spaced from which is an arrangement of vanes forming a jet for directing a stream of fluid into the groove upon movement in the opposite direction whereby the resultant increase in fluid turbulence increases resistance to rapid movement in this opposite direction.
摘要翻译： 速度限制装置在一个方向上提供比在相反方向更大的阻力通过流体的阻力。 该装置包括环形控制构件，其在一侧具有平滑的大致圆锥形的表面，用于在一个方向上通过流体的低阻力运动。 在其相反侧，控制构件形成有至少一个凹槽，其提供间隔开的凹形表面，所述凹形表面是形成喷嘴的叶片布置，用于在相反方向上移动时将流体流引导到凹槽中，由此导致流体的增加 湍流增加了在相反方向快速运动的阻力。
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公开(公告)号：US4853176A
公开(公告)日：1989-08-01
申请号：US215188
申请日：1988-07-05
CPC分类号： G21C7/10 , G21Y2002/104 , G21Y2004/10 , G21Y2004/301 , G21Y2004/40 , Y02E30/39 , Y10S376/90
摘要： In a control rod construction for moderating and controlling a reaction of a nuclear reactor, a control rod structure is disclosed in which hafnium is welded to stainless steel. Typically, the control rod is confined for movement axially along its length into and out of the reactor. The hafnium is surrounded in the control rod structure by a sheath of stainless steel to inhibit movement relative to the control rod structure other than in the axial direction of control rod movement. The hafnium is friction welded to the stainless steel of the control rod so as to stress the weld in either tension or compression due to dynamic loading occurring from control rod movement. The stainless steel to which the hafnium is welded is in turn conventionally welded or mechanically connected to the remaining steel components of the control rod. There results a secure control rod structure having welded hafnium that can withstand the dynamic loadings of fast insertion of control rods such as those loadings which commonly occur under rapid control rod acceleration and deceleration due to SCRAM of a reactor.
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公开(公告)号：US07742357B2
公开(公告)日：2010-06-22
申请号：US11381824
申请日：2006-05-05
IPC分类号： G11C17/18
CPC分类号： G11C29/46 , G11C29/1201
摘要： Securing an integrated circuit, including fabricating the integrated circuit to include a multiplicity of unblown efuses, at least one surrogate efuse that emulates a blown efuse, non-volatile data representing the blown state of the surrogate efuse, and security circuitry; and setting, by the security circuitry when power is first applied to the integrated circuit, a security state of the integrated circuit in dependence upon whether a sensed state of the surrogate efuse is equal to the blown state of the surrogate efuse.
摘要翻译： 保护集成电路，包括制造集成电路以包括多个未发射的efuse，至少一个仿效吹扫的efuse的替代效应器，表示替代efuse的熔断状态的非易失性数据和安全电路; 以及当所述安全电路首次向所述集成电路施加电力时，通过所述安全电路将所述集成电路的安全状态设置为依赖于所述替代efuse的感测状态是否等于所述替代efuse的所述吹扫状态。
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6.发明授权Creating a behavioral model of a hardware device for use in a simulation environment 有权创建用于模拟环境的硬件设备的行为模型公开(公告)号：US07562001B2
公开(公告)日：2009-07-14
申请号：US11193821
申请日：2005-07-29
CPC分类号： G06F17/5027 , G06F17/5022
摘要： Exemplary methods, apparatuses, and products are described for creating a behavioral model of a hardware device for use in a simulation environment. The behavioral model is created by an iterative process that includes receiving in a simulated hardware device from a simulated device under test (‘DUT’) a stimulus waveform. The stimulus waveform includes data representing a number of stimuli. In response to receiving the stimulus waveform, the simulated hardware device presents a recorded response waveform from a recorded response file to the DUT. The stimulus waveform is also recorded. The recorded stimulus waveform is presented to the hardware device. A response waveform that results from presenting the recorded stimulus waveform to the hardware device is recorded in the recorded response file.
摘要翻译： 描述了用于创建在仿真环境中使用的硬件设备的行为模型的示例性方法，设备和产品。 行为模型由迭代过程创建，该过程包括在仿真硬件设备中从被测设备（“DUT”）接收刺激波形。 刺激波形包括表示刺激次数的数据。 响应于接收到刺激波形，模拟硬件设备将记录的响应波形从记录的响应文件呈现给DUT。 也记录了刺激波形。 记录的刺激波形呈现给硬件设备。 将记录的激励波形呈现给硬件设备产生的响应波形被记录在记录的响应文件中。
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7.发明申请公开(公告)号：US20090024346A1
公开(公告)日：2009-01-22
申请号：US12128058
申请日：2008-05-28
申请人： Parag Birmiwal , Robert C. Dixon , Hien M. Le , Kirk E. Morrow
发明人： Parag Birmiwal , Robert C. Dixon , Hien M. Le , Kirk E. Morrow
IPC分类号： G01R31/00
CPC分类号： G01R31/318364 , G01R31/318357
摘要： Electronic component validation testing is facilitated by a method, system and program product which allows the importation of virtual signals derived from simulation verification testing of the electronic component design into electronic test equipment employed during validation testing of the actual electronic component. The method includes: storing simulation data resulting from simulation testing of an electronic component's design; employing electronic test equipment to perform real-time testing of the actual electronic component and obtain real-time test signals therefor; automatically correlating the stored simulation data with the actual real-time test signals; and performing at least one of overlaying and/or displaying the correlated simulation data as virtual signals with the real-time test signals; and employing a trigger event automatically ascertained from the stored simulation data and triggering the electronic test equipment based thereon, thereby automatically controlling real-time testing of the electronic component via the stored simulation data.
摘要翻译： 通过方法，系统和程序产品促进电子元件验证测试，该产品允许从电子元件设计的模拟验证测试导出的虚拟信号输入到在实际电子元件的验证测试期间使用的电子测试设备。 该方法包括：存储由电子元件设计的仿真测试得到的仿真数据; 采用电子测试设备对实际电子元件进行实时测试，并获得实时测试信号; 将存储的仿真数据与实际的实时测试信号自动相关; 以及使用所述实时测试信号执行将所述相关模拟数据叠加和/或显示为虚拟信号中的至少一个; 并根据所存储的模拟数据自动确定触发事件并触发电子测试设备，从而通过存储的仿真数据自动控制电子部件的实时测试。
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公开(公告)号：US06389059B1
公开(公告)日：2002-05-14
申请号：US09275067
申请日：1999-03-23
IPC分类号： H04K100
CPC分类号： H04J13/00 , G10L19/012 , H04B1/005 , H04B1/0057 , H04B1/006 , H04B1/406 , H04B1/69 , H04B1/707 , H04B7/2618 , H04B7/2634 , H04B2201/7071 , H04L1/0002 , H04L27/12 , H04W36/18 , H04W52/04 , H04W52/08 , H04W52/362 , H04W52/367 , H04W52/40 , H04W88/06
摘要： A technique for spread-spectrum communication which uses more than one mode and more than one frequency band. Selectable modes include narrowband mode and spread-spectrum mode, or cellular mode and microcellular mode. Selectable frequency bands include both licensed and unlicensed frequency bands, particularly frequency bands including the 902-928 MHz, 1850-1990 MHz, and 2.4-2.4835 GHz frequency bands. Spread-spectrum communication channels are 10 MHz or less in width. The frequency band onto which spread-spectrum signals are encoded may be changed upon a change in environment or other control trigger, such as establishment or de-establishment of communication with a private access network.
摘要翻译： 一种使用多于一种模式和多于一个频带的扩频通信技术。 可选择的模式包括窄带模式和扩频模式，或蜂窝模式和微蜂窝模式。 可选择的频段包括许可和非授权频段，特别是包括902-928 MHz，1850-1990 MHz和2.4-2.4835 GHz频段的频段。 扩频通信信道宽度为10 MHz或更小。 对扩频信号进行编码的频带可以在环境或其他控制触发的变化（诸如与专用接入网的建立或取消建立通信）之后改变。
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公开(公告)号：US6118824A
公开(公告)日：2000-09-12
申请号：US63639
申请日：1998-04-20
IPC分类号： H04B7/26 , H04H20/31 , H04H20/42 , H04H20/74 , H04H60/07 , H04H60/90 , H04H60/91 , H04J13/00 , H04W4/06 , H04W4/18 , H04W48/10 , H04W48/12 , H04L12/18 , H04B1/38 , H04L27/00 , H04L29/06
CPC分类号： H04W72/005 , H04B7/2637 , H04H20/42 , H04H60/07 , H04H60/90 , H04W4/06 , H04W48/12 , H04H20/31 , H04H20/74 , H04H60/91 , H04W4/18 , H04W48/10
摘要： A system for publishing data on shared broadcast channels using spread-spectrum techniques, which may comprise a spread-spectrum encoder capable of receiving data and placing it in a spread-spectrum signal format and a transmitter operating on a shared communication channel or frequency band, such as might be allocated to terrestrial point-to-point or broadcast communications. The shared communication channel may comprise a cellular system, in which data may be transmitted using spread-spectrum techniques using the transmitters and repeaters of the cellular system simultaneously with voice and other transmissions associated with the cellular system. A subscriber station may be capable of receiving using a plurality of different communication channels or frequency bands, such as a first receiver capable of cellular reception and a second receiver capable of satellite reception, at least one of which uses spread-spectrum techniques. The subscriber station may also comprise a transmitter using at least one communication channel or frequency band, so that the subscriber station may receive data or other transmissions using one channel and may request further data or other transmissions using a second channel.
摘要翻译： 一种用于使用扩频技术发布共享广播信道上的数据的系统，其可以包括能够接收数据并将其放置在扩频信号格式中的扩频编码器和在共享通信信道或频带上操作的发射机， 例如可能被分配给地面点对点或广播通信。 共享通信信道可以包括蜂窝系统，其中可以使用与蜂窝系统相关联的语音和其他传输的蜂窝系统的发射机和中继器的扩频技术来发射数据。 订户站可以能够使用多个不同的通信信道或频带来接收，例如能够进行蜂窝接收的第一接收机和能够进行卫星接收的第二接收机，其中至少一个使用扩频技术。 订户站还可以包括使用至少一个通信信道或频带的发射机，使得用户台可以使用一个信道接收数据或其他传输，并且可以使用第二信道请求进一步的数据或其他传输。
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公开(公告)号：US5815525A
公开(公告)日：1998-09-29
申请号：US622812
申请日：1996-03-27
CPC分类号： H04B1/0057 , H04B1/005 , H04B1/006 , H04B1/406 , H04B1/69 , H04B1/707 , H04B7/2634 , H04L1/0001 , H04B2201/7071 , H04L1/0002
摘要： A technique for spread-spectrum communication which uses more than one mode and more than one frequency band. Selectable modes include narrowband mode and spread-spectrum mode, or cellular mode and microcellular mode. Selectable frequency bands include both licensed and unlicensed frequency bands, particularly frequency bands including the 902-928 MHz, 1850-1990 MHz, and 2.4-2.4835 GHz frequency bands. Spread-spectrum communication channels are 10 MHz or less in width. The frequency band onto which spread-spectrum signals are encoded may be changed upon a change in environment or other control trigger, such as establishment or de-establishment of communication with a private access network.
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