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    • 1. 发明申请
    • SWITCHED MODE POWER CONVERTER
    • 开关电源转换器
    • WO2009147575A1
    • 2009-12-10
    • PCT/IB2009/052218
    • 2009-05-27
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N. V.LUERKENS, PeterLOEF, ChristophSCHEEL, ThomasHATTRUP, ChristianACKERMANN, Bernd
    • LUERKENS, PeterLOEF, ChristophSCHEEL, ThomasHATTRUP, ChristianACKERMANN, Bernd
    • H02M1/38H02M3/156
    • H02M1/38H02M3/156
    • The invention provides a switched mode power converter adapted for zero-voltage transition operation, wherein the converter comprises a half-bridge, having a first power switch (206) and a second power switch, a generator (201) adapted for generating a switching signal S1 after a first period of time, wherein the first period of time starts at the switching off of the second power switch, a controller (202) for converting the switching signal S1 into a control signal S2, wherein the first power switch (206) is switched on in case of the control signal S2, wherein the controller (202) comprises a detector (205), wherein the detector (205) is adapted to generate a first signal S3 in case the voltageover the first power switch (206) is decreasing, a processor (203), wherein the processor (203) is adapted to generate a trigger signal S4 in case of a switching signal S1 and while the first signal S3 is not present, a storage element (204), wherein the storageelement (204) is adapted to generate the control signal S2 in case of the trigger signal S4 and the switching signal S1, wherein the storage element 204 is adapted to keep the control signal S2 after disappearing of the trigger signal S4, wherein the storage element (204) is adapted to terminate the control signal S2 after disappearing of the switching signal S1.
    • 本发明提供了适用于零电压转换操作的开关式功率转换器,其中转换器包括具有第一功率开关(206)和第二功率开关的半桥,发生器(201),适于产生开关信号 S1,其中所述第一时间段在所述第二电源开关的切断时开始,用于将所述切换信号S1转换成控制信号S2的控制器(202),其中所述第一电源开关(206) 在控制信号S2的情况下接通,其中控制器(202)包括检测器(205),其中检测器(205)适于在第一电源开关(206)的电压为 减少处理器(203),其中处理器(203)适于在切换信号S1的情况下产生触发信号S4,而在第一信号S3不存在的情况下产生存储元件(204),其中存储元件(204) 204)适合于基因 在触发信号S4和切换信号S1的情况下对控制信号S2进行速率控制,其中存储元件204适于在触发信号S4消失之后保持控制信号S2,其中存储元件(204)适于终止 在切换信号S1消失之后的控制信号S2。
    • 3. 发明申请
    • X-RAY DEVICE FOR CONTROLLING A DC-AC CONVERTER
    • 用于控制直流 - 交流转换器的X射线装置
    • WO2009147579A1
    • 2009-12-10
    • PCT/IB2009/052223
    • 2009-05-27
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N. V.SCHEEL, ThomasHATTRUP, ChristianURBAN, Max, C.KRATSCH, Peter, P.
    • SCHEEL, ThomasHATTRUP, ChristianURBAN, Max, C.KRATSCH, Peter, P.
    • A61B6/03H02M3/335H05G1/12
    • H05G1/12A61B6/032A61B6/56H02M2007/4815Y02B70/1441
    • The invention provides an X-raydevice for controlling a DC-AC converter, wherein the DC-AC converter is adapted for supplying a resonant circuit and a transformer (105) of a computer tomography gantry (91) with electrical energy, wherein the gantrycomprises a rotary part (93) and a stationary part (92), wherein the transformer (105) is adapted for providing a current, feeding a high voltage rectifier circuit (106), providing an output voltage (107), the X-raydevice comprises a detector for detecting the output voltage, a predictor (501) for calculating a first output with the use of processing the output voltage (107), wherein the first output represents the change of the output voltage (107) for the possible states of the DC-AC converter (102), a control loop (503) for calculating the required change of the output voltage (107) with the use of processing the output voltage (107) and the target specification, a decision block (502) for calculating a controlvalue with the use of processing the first output and the required change of the output voltage (107), wherein the detector, the predictor (501), the control loop (503) and at least a part ofthe decision block (502) are adapted to be mounted on the rotary part of the gantry (93), such as the information content to be transmitted from the rotary part of the gantry (93) to the stationary part of the gantry (92) is less than the information content of the output voltage. A further aspect of the invention is a computer tomography gantry (91) comprising an X-raydevice according to the invention.
    • 本发明提供了一种用于控制DC-AC转换器的X射线装置,其中DC-AC转换器用于向计算机断层摄影台架(91)提供具有电能的谐振电路和变压器(105),其中,龙门式机 旋转部分(93)和固定部分(92),其中所述变压器(105)适于提供电流,馈送高压整流器电路(106),提供输出电压(107),所述X射线设备包括 用于检测输出电压的检测器,用于使用处理输出电压(107)计算第一输出的预测器(501),其中第一输出表示对于DC的可能状态的输出电压(107)的变化 -AC转换器(102),用于使用处理所述输出电压(107)和所述目标指定来计算所述输出电压(107)的所需变化的控制回路(503),用于计算 控制值与使用过程 第一输出和所需的输出电压变化(107),其中所述检测器,所述预测器(501),所述控制回路(503)以及所述判定块(502)的至少一部分适于安装在所述输出电压 诸如要从台架(103)的旋转部分传送到台架(92)的静止部分的信息内容的台架(93)的旋转部分小于输出电压的信息内容。 本发明的另一方面是包括根据本发明的X射线装置的计算机断层摄影台架(91)。
    • 5. 发明申请
    • STATE SPACE FEEDBACK CONTROLLER IN THE DIGITAL DOMAIN FOR AN MRI GRADIENT COIL POWER SUPPLY
    • 用于MRI梯度线圈电源的数字域中的状态空间反馈控制器
    • WO2012085777A1
    • 2012-06-28
    • PCT/IB2011/055700
    • 2011-12-15
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHSCHEEL, ThomasHATTRUP, Christian
    • SCHEEL, ThomasHATTRUP, Christian
    • G01R33/385
    • G01R33/3852
    • The invention relates to a state space feedback controller operating in the digital domain for the regulation of the current supply to MRI gradient coils from a multiple-bridge PWM power amplifier. The Pl-controller comprises an integration part (for the integration of the difference between the demand current and the measured gradient coil current) and a subsequent P-controlled system which in turn comprises a delay compensator/stabilizer and a plant. The delay compensator/stabilizer comprises a multi-path feedback loop by means of which its digital output signal is fed back through delay blocks, on the one hand, and through filter units, on the other hand, whereby the filter units model the transfer functions of a gradient coil output filter for the gradient coil voltage and the output current of the amplifier inverter units, respectively. In the plant, a filter unit, which models the gradient coil transfer function, is connected in series to a delay chain for the delay of the measurement value of the gradient coil current.
    • 本发明涉及一种状态空间反馈控制器,在数字领域中工作,用于调节从多桥PWM功率放大器向MRI梯度线圈供电的电流。 P1控制器包括集成部分(用于积分需求电流和测量的梯度线圈电流之间的差异)和随后的P控制系统,其继而包括延迟补偿器/稳定器和设备。 延迟补偿器/稳定器包括多路径反馈回路,另一方面,一方面,其数字输出信号通过延迟块反馈,另一方面通过滤波器单元,由此滤波器单元模拟传递函数 分别用于梯形线圈电压和放大器逆变器单元的输出电流的梯度线圈输出滤波器。 在工厂中,对梯度线圈传递函数建模的滤波器单元与延迟链串联连接,用于延迟梯度线圈电流的测量值。
    • 7. 发明申请
    • BINARY CONTROLLER AND POWER SUPPLY WITH A BINARY CONTROLLER
    • 二进制控制器和电源与二进制控制器
    • WO2008012714A2
    • 2008-01-31
    • PCT/IB2007/052733
    • 2007-07-10
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.LÜRKENS, PeterSCHEEL, ThomasHATTRUP, Christian
    • LÜRKENS, PeterSCHEEL, ThomasHATTRUP, Christian
    • H02M3/335
    • H02M3/157
    • A controller is described, which is particularly suited for a power supply with switching elements (S1, S2), such as a switching mode power supply. The controller comprises a logical unit (18) which calculates a binary state value Z k by a first logical operation from a binary input value I and a prior binary state value Z k- 1 . The logical unit further calculates a binary output value Y by a second logical operation from the binary input value I and the binary state value Z k . In this way, fast and efficient fully digital control may be realized especially for a switching mode power supply, where the binary input value I is a comparator value and the binary output value Y is used to drive the switch elements (S1, S2). An adaptation unit (20), which may be a signal processor, determines the logical operations and delivers them to the logical unit (18) during operation of the controller unit (16).
    • 描述了一种控制器,其特别适用于具有开关元件(S1,S2)的电源,例如开关模式电源。 该控制器包括一个逻辑单元(18),该逻辑单元(18)通过来自二进制输入值I和现有二进制状态值Z k-1的第一逻辑运算来计算二进制状态值Z < SUB>。 逻辑单元还通过来自二进制输入值I和二进制状态值Z 的第二逻辑运算来计算二进制输出值Y. 以这种方式,可以实现快速高效的全数字控制,特别是对于二进制输入值I是比较器值并且二进制输出值Y用于驱动开关元件(S1,S2)的开关模式电源。 可以是信号处理器的适配单元(20)在控制器单元(16)的操作期间确定逻辑操作并将其传送到逻辑单元(18)。
    • 10. 发明申请
    • ANALOG TO DIGITAL CONVERSION CIRCUIT WITH AUTOMATIC BIAS POINT DETERMINATION AND MR GRADIENT SYSTEMS USING THE SAME
    • 模拟到具有自动偏心点确定的数字转换电路和使用其的MR梯度系统
    • WO2010018533A2
    • 2010-02-18
    • PCT/IB2009/053516
    • 2009-08-11
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHSCHEEL, ThomasHATTRUP, ChristianLUERKENS, Peter
    • SCHEEL, ThomasHATTRUP, ChristianLUERKENS, Peter
    • H03M3/412
    • A hybrid analog/digital circuit comprises: an analog difference element (60) configured to output an analog difference signal (d) corresponding to a difference between an input analog signal (s meas ) and an analog feedback signal (s bias ); an analog-to-digital converter (ADC) (62) configured to generate a multi-bit digital representation (D) of the analog difference signal; digital control circuitry (64, 66, 68) including at least a digital integrator or digital summer (64), the digital control circuitry configured to generate a digital control signal (S BIAS ) based on the multi-bit digital representation of the analog difference signal; a digital-to-analog converter (DAC) (70) configured to generate the analog feedback signal (s bias ) having an analog value corresponding to a digital value of the digital control signal; and an output unit (72, 74) arranged to output a digital output signal (S MEAS ) equal to or derived from the digital control signal.
    • 混合模拟/数字电路包括:模拟差分元件(60),被配置为输出对应于输入模拟信号(s meas)和模拟反馈信号(s bias)之间的差的模拟差分信号(d); 被配置为产生所述模拟差分信号的多位数字表示(D)的模拟 - 数字转换器(ADC)(62); 包括至少数字积分器或数字加法器(64)的数字控制电路(64,66,68),所述数字控制电路被配置为基于所述模拟差异的多位数字表示来生成数字控制信号(S BIAS) 信号; 配置成产生具有对应于数字控制信号的数字值的模拟值的模拟反馈信号(s偏置)的数模转换器(DAC)(70) 以及布置成输出与数字控制信号相等或从数字控制信号导出的数字输出信号(S MEAS)的输出单元(72,74)。