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公开(公告)号：US07000141B1
公开(公告)日：2006-02-14
申请号：US10295554
申请日：2001-11-14
申请人： Magnus Karlsson , Qian Wang , John Wilkes
发明人： Magnus Karlsson , Qian Wang , John Wilkes
IPC分类号： G06F11/00
CPC分类号： G06F9/5011 , G06F11/3442 , G06F11/3457
摘要： A technique for data placement in a distributed system that takes into account fault tolerance. Data placement is performed in which data objects, and possibly replicas thereof, are assigned to nodes within the distributed system. The resulting placement is then tested to determine whether the system provides desired performance under various different fault scenarios. If not, the distributed system is altered such as by altering its capacity or its capacity allocations. Performing data placement, testing for fault-tolerance and altering capacity or capacity allocations are performed repetitively, thereby increasing the system's ability to provide the desired performance under the fault scenarios. Preferably, a system and placement are eventually determined that provide the desired performance under the given fault scenarios.
摘要翻译： 一种考虑到容错的分布式系统中的数据放置技术。 执行数据放置，其中数据对象及其可能的副本被分配给分布式系统内的节点。 然后测试结果的位置，以确定系统是否在各种不同的故障情况下提供所需的性能。 如果不是，分布式系统被改变，例如改变其容量或容量分配。 执行数据放置，重复测试容错和更改容量或容量分配，从而提高系统在故障情况下提供所需性能的能力。 优选地，最终确定在给定故障情况下提供期望性能的系统和布局。
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2.发明授权公开(公告)号：US09397578B2
公开(公告)日：2016-07-19
申请号：US14379098
申请日：2012-02-17
CPC分类号： H02M3/33546 , H02M1/08 , H02M1/14 , H02M2001/0012 , H02M2001/0016 , H02M2001/0022
摘要： A digital control unit generates a control signal to control a duty cycle of a switched mode power supply such that a faster response to an input voltage transient is achieved. The digital control unit comprises a feedback compensator, a feed forward compensator, a transient detector, and a controller. The transient detector receives a signal indicative of the input voltage of the switched mode power supply and detects transients on the received signal. The feedback compensator receives a signal indicative of the output voltage of the switched mode power supply and adjusts the control signal. The feed forward compensator receives a signal indicative of the input voltage of the switched mode power supply, performs a relatively fast, but coarse, adjustment of the control signal, and then performs a more accurate, but relatively slow, adjustment of the control signal.
摘要翻译： 数字控制单元生成控制信号以控制开关模式电源的占空比，从而实现对输入电压瞬变的更快的响应。 数字控制单元包括反馈补偿器，前馈补偿器，瞬态检测器和控制器。 瞬态检测器接收指示开关模式电源的输入电压的信号，并检测接收信号的瞬变。 反馈补偿器接收指示开关模式电源的输出电压的信号并调节控制信号。 前馈补偿器接收表示开关模式电源的输入电压的信号，对控制信号执行相对较快但粗略的调整，然后对控制信号进行更精确但相对较慢的调整。
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3.发明授权Feedforward digital control unit for switched mode power supply and method thereof 有权用于开关电源的前馈数字控制单元及其方法公开(公告)号：US08816663B2
公开(公告)日：2014-08-26
申请号：US13318609
申请日：2010-02-26
申请人： Magnus Karlsson , Fredrik Wahledow
发明人： Magnus Karlsson , Fredrik Wahledow
CPC分类号： H02M3/157 , H02M2001/0022
摘要： To calculate a control signal for the duty cycle of a switched mode power supply (SMPS), a voltage feed forward compensator is integrated into a feedback unit. A control unit has an adder with a first input to receive a signal dependent upon an output voltage. A second input receives a signal from a feedback circuit, and an output outputs a signal comprising the sum of the signals applied to the inputs; another output outputs a control signal for controlling the duty cycle, the control signal is dependent upon the output signal from the adder; a voltage feed forward compensation signal generator calculates a compensation signal to adjust the control signal depending upon an input voltage of the SMPS; and a feedback circuit between the output of the adder and the second input of the adder calculates a compensated feedback signal and to feed the compensated feedback signal to the second input of the adder.
摘要翻译： 为了计算开关模式电源（SMPS）的占空比的控制信号，将电压前馈补偿器集成到反馈单元中。 控制单元具有加法器，该加法器具有第一输入端以接收取决于输出电压的信号。 第二输入接收来自反馈电路的信号，并且输出输出包括施加到输入端的信号之和的信号; 另一输出输出用于控制占空比的控制信号，控制信号取决于加法器的输出信号; 电压前馈补偿信号发生器根据SMPS的输入电压来计算补偿信号以调整控制信号; 并且加法器的输出和加法器的第二输入之间的反馈电路计算经补偿的反馈信号，并将经补偿的反馈信号馈送到加法器的第二输入端。
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公开(公告)号：US08676525B2
公开(公告)日：2014-03-18
申请号：US13321915
申请日：2009-06-03
申请人： Torbjorn Holmberg , Magnus Karlsson
发明人： Torbjorn Holmberg , Magnus Karlsson
IPC分类号： G06F19/00
CPC分类号： H02M3/156 , G01R19/25 , H02M2001/0009
摘要： A method of determining a current in a switched mode power supply. The method comprises: storing values representing at least one pre-calculated matrix A; receiving measured current values; and using the stored values representing the matrix A and the received current values to calculate a respective initial value for each of the coefficients of the line and for each measured current value: calculating an estimated current using the equation of the line and the calculated initial values of the coefficients; determining a difference between the measured current value and the estimated current value to generate a difference value, and comparing the difference value against a threshold and, if the difference value is greater than the threshold, calculating updated values of the coefficients using stored values representing matrix A and difference value. A value for the current in the switched mode power supply is determined using the updated values of the coefficients
摘要翻译： 一种确定开关模式电源中的电流的方法。 该方法包括：存储表示至少一个预先计算的矩阵A的值; 接收测量电流值; 并且使用存储的表示矩阵A的值和接收到的电流值来计算线路的每个系数和每个测量的电流值的相应初始值：使用线的方程和所计算的初始值来计算估计电流 的系数; 确定所测量的电流值与所述估计电流值之间的差以产生差值，并且将所述差值与阈值进行比较，并且如果所述差值大于所述阈值，则使用表示矩阵的存储值来计算所述系数的更新值 A和差值。 使用系数的更新值确定开关模式电源中的电流的值。
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5.发明授权System and method for determining correct sign of response of an adaptive controller 有权用于确定自适应控制器的响应的正确符号的系统和方法公开(公告)号：US08612028B2
公开(公告)日：2013-12-17
申请号：US11149991
申请日：2005-06-10
申请人： Magnus Karlsson , Michele M. Covell
发明人： Magnus Karlsson , Michele M. Covell
IPC分类号： G05B13/02
CPC分类号： G05B13/042
摘要： According to one embodiment, a method comprises receiving, by an adaptive controller, performance measurement for a computing system. The method further comprises estimating a performance model for use by the adaptive controller, and determining whether the estimated performance model has a correct sign for approaching performance desired for the computing system. When determined that the estimated performance model has an incorrect sign, the adaptive controller takes action to determine a performance model having a correct sign for approaching performance desired for the computing system.
摘要翻译： 根据一个实施例，一种方法包括由自适应控制器接收计算系统的性能测量。 该方法还包括估计由自适应控制器使用的性能模型，以及确定所估计的性能模型是否具有用于接近计算系统期望的性能的正确符号。 当确定估计的性能模型具有不正确的符号时，自适应控制器采取行动来确定具有用于接近计算系统期望的性能的正确符号的性能模型。
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公开(公告)号：US20130141945A1
公开(公告)日：2013-06-06
申请号：US13383632
申请日：2011-12-01
IPC分类号： H02M3/335
CPC分类号： H02M3/3378 , H02M1/36 , H02M1/40 , H02M3/33592 , Y02B70/1475
摘要： An isolated switched mode power supply, SMPS, comprises a switching controller operable to generate start-up switching control signals during start-up of the isolated SMPS, and operational switching control signals of period T during subsequent operation of the isolated SMPS. The SMPS further comprises a transformer having a primary winding and a full-bridge drive circuit arranged to drive the primary winding of the transformer in response to the switching control signals. The full-bridge drive circuit has: a first switching element and a boot-strap driving circuit arranged to switch the first switching element in response to the switching control signals, the boot-strap driving circuit having a boot-strap capacitor. The full-bridge drive circuit further comprises a second switching element connected to the first switching element and to the boot-strap driving circuit, and arranged to conduct a current to charge the boot-strap capacitor when switched ON in response to the switching control signals. The switching controller is operable to start up the isolated SMPS by: determining a duty cycle D for the operational switching control signals based on a voltage an output of the isolated SMPS and generating the start-up switching control signals comprising a first voltage pulse of duration P1 to temporarily switch ON the second switching element, and a subsequent second voltage pulse of duration P2 to temporarily switch ON the first switching element, wherein P1
摘要翻译： 隔离开关模式电源SMPS包括开关控制器，其可操作以在隔离的SMPS的启动期间产生启动开关控制信号，以及在隔离的SMPS的后续操作期间的周期T的操作开关控制信号。 SMPS还包括具有初级绕组和全桥驱动电路的变压器，其布置成响应于开关控制信号驱动变压器的初级绕组。 全桥驱动电路具有：第一开关元件和引导带驱动电路，布置成响应于开关控制信号而切换第一开关元件，引导带驱动电路具有引导电容器。 所述全桥驱动电路还包括连接到所述第一开关元件和所述引导带驱动电路的第二开关元件，并且被布置成响应于所述开关控制信号而导通开关导通时对所述引导电容器充电的电流 。 开关控制器可操作以通过以下方式启动隔离的SMPS：基于隔离SMPS的输出的电压确定用于操作开关控制信号的占空比D，并产生包括持续时间的第一电压脉冲的启动切换控制信号 P1暂时接通第二开关元件，以及随后的持续时间P2的第二电压脉冲，以临时切换第一开关元件，其中P1
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公开(公告)号：US08456867B1
公开(公告)日：2013-06-04
申请号：US13383632
申请日：2011-12-01
CPC分类号： H02M3/3378 , H02M1/36 , H02M1/40 , H02M3/33592 , Y02B70/1475
摘要： An isolated switched mode power supply (SMPS) is disclosed. The SMPS comprises a switching controller to generate start-up and operational switching control signals. The SMPS further includes a transformer, having a primary winding, and a full-bridge drive circuit to drive the primary winding. The full-bridge drive circuit comprises a first switching element, a boot-strap dnving circuit, and a second switching element. The switching controller is further used to start up isolated SMPS by determining a duty cycle for operational control signals and generating the start-up switching control signals.
摘要翻译： 公开了一种隔离开关电源（SMPS）。 SMPS包括用于产生启动和运行切换控制信号的切换控制器。 SMPS还包括具有初级绕组的变压器和用于驱动初级绕组的全桥驱动电路。 全桥驱动电路包括第一开关元件，引导带驱动电路和第二开关元件。 开关控制器还用于通过确定操作控制信号的占空比并产生启动切换控制信号来启动隔离SMPS。
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公开(公告)号：US20120287681A1
公开(公告)日：2012-11-15
申请号：US13502276
申请日：2011-05-10
CPC分类号： H02M1/38 , H02M3/33592 , Y02B70/1475
摘要： A switching delay controller (150) for controlling a switching delay between the switching of a first and a second switching element (Q1 to Q4) in a switched mode power supply (300), the switched mode power supply comprising a feedback signal generator (140) operable to generate a feedback signal indicative of a difference between an output (Vout) of the switched mode power supply and a reference (Vref) for the output, and a drive circuit (120) for switching the first and second switching elements so as to convert an input voltage (Vin) to the switched mode power supply (300) into an output voltage (Vout) thereof based on the feedback signal. The switching delay controller (150) comprises a switching delay calculator (152) operable to cause a change of the switching delay for at least one switching cycle of the switched mode power supply, and a feedback signal monitor (151) operable to monitor the feedback signal and determine a change in the feedback signal in response to the change to the switching delay by the switching delay calculator (152). The switching delay calculator (152) is further operable to calculate a switching delay to increase an efficiency of the switched mode power supply (300) based on the determined change in the feedback signal, and cause a change of the switching delay in the switched mode power supply to the calculated switching delay.
摘要翻译： 一种用于控制开关模式电源（300）中的第一和第二开关元件（Q1至Q4）的切换之间的开关延迟的开关延迟控制器（150），所述开关模式电源包括反馈信号发生器（140） ），用于产生指示所述开关模式电源的输出（Vout）与所述输出的基准（Vref）之间的差的反馈信号;以及用于切换所述第一和第二开关元件的驱动电路（120），以便 基于所述反馈信号将输入电压（Vin）转换为开关模式电源（300）至其输出电压（Vout）。 切换延迟控制器（150）包括切换延迟计算器（152），其可操作以在切换模式电源的至少一个切换周期中引起切换延迟的改变;以及反馈信号监视器（151），其可操作以监视反馈 响应于切换延迟计算器（152）对切换延迟的改变来确定反馈信号的变化。 开关延迟计算器（152）还可操作以基于所确定的反馈信号的变化来计算开关延迟以提高开关模式电源（300）的效率，并且导致开关模式中的开关延迟的改变 电源为计算出的切换延迟。
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公开(公告)号：US08115392B1
公开(公告)日：2012-02-14
申请号：US10584563
申请日：2007-05-31
申请人： Magnus Karlsson , Fredrik Olsson
发明人： Magnus Karlsson , Fredrik Olsson
摘要： The invention relates to a device for generation of microwaves comprising a coaxial virtual cathode oscillator (1) with an outer cylindrical tube forming a cathode (2) and connected to a transmission line (8) for feeding the cathode (2) with voltage pulses, and an inner cylindrical tube, at least partially transparent for electrons, forming an anode (3) and connected to a transmission device (8) for outputting microwave radiation generated by the formation of a virtual cathode (4) inside an area enclosed by the anode. Through the introduction of a centre conductor (5) arranged to coincide with the centre axle (19) for the cathode's (2) outer cylindrical tube and in electrical connection with the tube a device for generation of microwaves is obtained having improved energy efficiency and better broadband performance.
摘要翻译： 本发明涉及一种用于产生微波的装置，包括一个同轴虚拟阴极振荡器（1），该同轴虚拟阴极振荡器（1）具有形成阴极（2）的外圆柱形管，并连接到用于将阴极（2）馈送到电压脉冲的传输线（8） 和至少部分地为电子透明的内圆柱形管，形成阳极（3）并连接到传输装置（8），用于输出在由阳极包围的区域内形成虚拟阴极（4）而产生的微波辐射 。 通过引入布置成与用于阴极（2）外圆柱形管的中心轴（19）重合并与管电连接的中心导体（5），获得具有改善的能量效率和更好的用于产生微波的装置 宽带性能。
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公开(公告)号：US20120025703A1
公开(公告)日：2012-02-02
申请号：US10584563
申请日：2007-05-31
申请人： Magnus Karlsson , Fredrik Olsson
发明人： Magnus Karlsson , Fredrik Olsson
IPC分类号： H01J25/55
摘要： The invention relates to a device for generation of microwaves comprising a coaxial virtual cathode oscillator (1) with an outer cylindrical tube forming a cathode (2) and connected to a transmission line (8) for feeding the cathode (2) with voltage pulses, and an inner cylindrical tube, at least partially transparent for electrons, forming an anode (3) and connected to a transmission device (8) for outputting microwave radiation generated by the formation of a virtual cathode (4) inside an area enclosed by the anode. Through the introduction of a centre conductor (5) arranged to coincide with the centre axle (19) for the cathode's (2) outer cylindrical tube and in electrical connection with the tube a device for generation of microwaves is obtained having improved energy efficiency and better broadband performance.
摘要翻译： 本发明涉及一种用于产生微波的装置，包括一个同轴虚拟阴极振荡器（1），该同轴虚拟阴极振荡器（1）具有形成阴极（2）的外圆柱形管，并连接到用于将阴极（2）馈送到电压脉冲的传输线（8） 和至少部分地为电子透明的内圆柱形管，形成阳极（3）并连接到传输装置（8），用于输出在由阳极包围的区域内形成虚拟阴极（4）而产生的微波辐射 。 通过引入布置成与用于阴极（2）外圆柱形管的中心轴（19）重合并与管电连接的中心导体（5），获得具有改善的能量效率和更好的用于产生微波的装置 宽带性能。
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