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    • 2. 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)。
    • 4. 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。
    • 8. 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)。