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公开(公告)号：US08712065B2
公开(公告)日：2014-04-29
申请号：US12453090
申请日：2009-04-29
Applicant: Mads Emil Solgaard , Bjørn Sand Jensen
Inventor： Mads Emil Solgaard , Bjørn Sand Jensen
IPC: H03G11/00
Abstract: This invention relates to the mechanical protection using digital processing and a predictive estimation of instantaneous displacement of the voice coil in a loudspeaker transducer.The invention solves the problem of limiting the coil displacement of the transducer by applying a look-a-head based linear or non-linear predictor and a controller operating directly on the displacement signal in order to finally convert back into the incoming signal domain.
Abstract translation: 本发明涉及使用数字处理的机械保护和扬声器换能器中音圈的瞬时位移的预测估计。 本发明解决了通过应用基于头目的线性或非线性预测器和直接在位移信号上操作的控制器来限制换能器的线圈位移以最终转换回入射信号域的问题。
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公开(公告)号：US20140070885A1
公开(公告)日：2014-03-13
申请号：US14115372
申请日：2012-05-21
Applicant: BANG & OLUFSEN ICEPOWER A/S
Inventor： Mads Peter Frium
CPC classification number: H02M3/33569 , H02M2001/0006 , H03F3/185 , H03F3/217 , H03F3/2171
Abstract: A power supply arrangement for a single ended class D amplifier, including a first primary winding connected in series with a first switch between the positive supply rail and ground, a second primary winding in phase with said first primary winding and connected in series with a second switch between the negative supply rail and ground, and a controller adapted to apply a control signal to said first and second switches, said control signal (Q) having ON-pulses of a predefined pulse time separated by a dead time. In use, the primary winding connected to the supply rail with the highest numerical voltage will transform the rail voltage difference to the supply rail with the lowest numerical voltage through the opposite primary winding thus reducing any voltage unbalance between the windings.
Abstract translation: 一种用于单端D类放大器的电源装置，包括与正电源轨和地之间的第一开关串联连接的第一初级绕组，与所述第一初级绕组同相连接的第二初级绕组， 在负电源轨和地之间切换，以及控制器，适于向所述第一和第二开关施加控制信号，所述控制信号（Q）具有以死区时间分隔的预定脉冲时间的导通脉冲。 在使用中，连接到具有最高数值电压的电源轨的初级绕组将通过相对的初级绕组将轨电压差转换为具有最低数值电压的电源轨，从而减少绕组之间的任何电压不平衡。
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公开(公告)号：US20090268918A1
公开(公告)日：2009-10-29
申请号：US12453090
申请日：2009-04-29
Applicant: Mads Emil Solgaard , Bjorn Sand Jensen
Inventor： Mads Emil Solgaard , Bjorn Sand Jensen
IPC: H03G11/00
Abstract: This invention relates to the mechanical protection using digital processing and a predictive estimation of instantaneous displacement of the voice coil in a loudspeaker transducer.The invention solves the problem of limiting the coil displacement of the transducer by applying a look-a-head based linear or non-linear predictor and a controller operating directly on the displacement signal in order to finally convert back into the incoming signal domain.
Abstract translation: 本发明涉及使用数字处理的机械保护和扬声器换能器中音圈的瞬时位移的预测估计。 本发明解决了通过应用基于头目的线性或非线性预测器和直接在位移信号上操作的控制器来限制换能器的线圈位移以最终转换回入射信号域的问题。
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公开(公告)号：US20090141925A1
公开(公告)日：2009-06-04
申请号：US12292892
申请日：2008-11-28
Applicant: Marcus Michael Weyreuther
Inventor： Marcus Michael Weyreuther
IPC: H04R1/00
CPC classification number: H04R9/06
Abstract: In one embodiment of the present invention, an electro-dynamic transducer is disclosed including a diaphragm, a first suspension suspending the diaphragm, a coil former attached to the diaphragm, the coil former having a first, inner portion, and a second, outer portion, arranged coaxially in relation to each other, a coil arranged around the outer coil former portion, a magnetic system, operable to magnetically cooperate with the coil, and a second suspension mounted between the inner coil former portion and the magnetic system. The new and improved way of placing the second suspension allows for a slim form factor, while stabilizing the system more than prior art designs. The transducer according to one embodiment of the present invention is less sensitive to rocking modes, and the gap in the magnet system can thus be made smaller.
Abstract translation: 在本发明的一个实施例中，公开了一种电动变换器，其包括隔膜，悬挂隔膜的第一悬架，连接到隔膜的线圈架，具有第一内部部分和第二外部部分的线圈架 ，相对于彼此同轴布置的线圈，围绕外部线圈成形器部分布置的线圈，可操作以与线圈磁性协作的磁性系统，以及安装在内部线圈形成器部分和磁性系统之间的第二悬架。 放置第二悬架的新的和改进的方式允许超薄的外形尺寸，同时比现有技术设计更稳定系统。 根据本发明的一个实施例的换能器对摆动模式的敏感度较低，因此可以使磁体系统中的间隙更小。
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公开(公告)号：US07295062B2
公开(公告)日：2007-11-13
申请号：US10534026
申请日：2003-11-14
Applicant: Lars Michael Fenger
Inventor： Lars Michael Fenger
IPC: H03F3/38
Abstract: A pulse modulation power converter comprising a forward path including a forward block (15), a switching stage (11) for amplifying an output from the forward block, and an output filter (12) for low pass filtering an output signal from the switching stage, a global feedback path (13), connected to the low pass filtered output signal, comprising a global feedback block (18, 19) for generating a feedback signal, and means (14) for subtracting said feedback signal from an input signal, and feeding the result to said forward path. The global feedback block and/or forward block includes means for compensating at least a portion of a phase lag of said output filter, and means for obtaining a 180 degrees phase lag at a switching frequency, thereby achieving conditions for a controlled oscillation at said switching frequency. The control system combines the advantages of the self-oscillation technology with a high gain, wide-band control loop for suppressing non-linearities. This will lead to a better performing system in terms of total harmonic distortion and noise.
Abstract translation: 一种脉冲调制功率转换器，包括前向通路，该正向通路包括前向块（15），用于放大来自前向块的输出的开关级（11）和用于对来自开关级的输出信号进行低通滤波的输出滤波器（12） ，连接到所述低通滤波输出信号的全局反馈路径（13），包括用于产生反馈信号的全局反馈块（18,19），以及用于从输入信号中减去所述反馈信号的装置（14），以及 将结果馈送到所述前进路径。 全局反馈块和/或前向块包括用于补偿所述输出滤波器的相位滞后的至少一部分的装置，以及用于在开关频率处获得180度相位滞后的装置，从而在所述开关处获得受控振荡的条件 频率。 控制系统将自振荡技术的优点与高增益宽带控制环路结合起来，以抑制非线性。 这将导致在总谐波失真和噪声方面表现更好的系统。
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Patent Agency Ranking
公开(公告)号：US10148235B2
公开(公告)日：2018-12-04
申请号：US15577215
申请日：2016-06-01
Applicant: ICEPOWER A/S
Inventor： Kennet Skov Andersen , Eskil Jørgensen
Abstract: The invention relates to a compensator device for compensating signal dependent delay variations, including dead time and reverse recovery time, causing un-linearity in a Class-D amplifier where the compensator device comprises: a first input terminal for receiving an input pulse width modulated input PWM signal comprising pulses with falling flanks corresponding to a falling level transition and rising flanks corresponding to a rising level transition; and a second input terminal configured to receive the signal provided at an output switching node of a Class-D amplifier; an output terminal for providing a compensated output signal; and controllable delay means configured to receive and delay the pulse modulated input signal, thereby providing a delayed version of the input signal to said output terminal of the compensator device. The compensator device further comprises time measuring means configured for measuring the time between a transition of the signal provided at the output terminal of the compensator device and the corresponding transition of the signal at the output switching node of a Class-D amplifier and based on these measurements providing a control signal to the controllable delay means. An advantageous effect of the present invention is that the rising and falling level transition delays will be substantially similar thus substantially removing non-linearity and obtaining substantially correct pulse widths. The invention further relates to a corresponding method, a driver device and a Class-D amplifier.
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公开(公告)号：US09991852B2
公开(公告)日：2018-06-05
申请号：US15528934
申请日：2015-11-02
Applicant: ICEpower a/s
Inventor： Kennet Skov Andersen
CPC classification number: H03F1/305 , H03F1/02 , H03F3/183 , H03F3/187 , H03F3/217 , H03F3/2173 , H03F2200/03 , H03F2200/129 , H03F2200/135 , H03F2200/144 , H03F2200/156 , H03F2200/258 , H03F2200/342 , H03F2200/426 , H03F2200/441 , H03F2200/444 , H03F2200/66 , H03F2200/78 , H03G3/301 , H03G3/348 , H03G2201/106
Abstract: A close-down pop reduction system and a method for close-down pop reduction in an audio amplifier assembly are disclosed. The switching power conversion system comprises a forward path having a compensator and a switching power stage and a signal path from an output of a comparator in the switching power stage to a sequence control unit. The signal path includes a close-down timing circuit configured to provide a timing signal. The sequence control unit is configured to eliminate the input signal, increase the switch frequency of the close-down pop reduction system and disable the switching power stage at a moment in time within a PWM pulse of the switching power stage. Hereby, it is e.g. possible to minimize the audible pop during close-down of audio amplifier assemblies.
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公开(公告)号：US20140077885A1
公开(公告)日：2014-03-20
申请号：US14115371
申请日：2012-06-14
Applicant: BANG & OLUFSEN ICEPOWER A/S
Inventor： Mads Peter Frium
CPC classification number: H02M3/33576 , H02M3/33569 , H02M2001/0058 , H03F3/217 , H03F3/2173 , Y02B70/1491
Abstract: A power converter with positive and negative supply rail outputs for feeding a single ended class D amplifier, the converter comprising a transformer arrangement, a supply pump reduction arrangement connected between the secondary windings and the positive and negative supply rail outputs, and a boost drive mode switching arrangement. A controller is adapted to control the power converter in a negate drive mode and a boost drive mode, wherein the output voltage in the boost mode is increased by means of the transformer and the boost drive mode switching arrangement. The output voltages on the positive and negative rails can be generated at two different output voltage levels without changing the duty cycle or dead time of the control signals.
Abstract translation: 一种具有正和负电源轨输出的功率转换器，用于馈送单端D类放大器，转换器包括变压器布置，连接在次级绕组与正和负电源轨输出之间的供应泵减速装置，以及升压驱动模式 切换布置。 控制器适于在负驱动模式和升压驱动模式下控制功率转换器，其中升压模式中的输出电压通过变压器和升压驱动模式切换装置增加。 正负极轨上的输出电压可以在两个不同的输出电压电平下产生，而不会改变控制信号的占空比或死区时间。
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19.发明授权公开(公告)号：US08259953B2
公开(公告)日：2012-09-04
申请号：US12385528
申请日：2009-04-10
Applicant: Bjørn Sand Jensen , Mads Emil Solgaard
Inventor： Bjørn Sand Jensen , Mads Emil Solgaard
IPC: H03G11/00
CPC classification number: H03G3/301 , H03F1/52 , H03F2200/03 , H03F2200/426 , H04R9/022
Abstract: Electro dynamic transducers can fail due to either excessive voice coil excursion, causing mechanical clipping, or by overheating of the voice coil causing degradation of the materials. The disclosed invention relates to protection against excess voice coil temperature in such transducers. The current through the transducer voice coil and the voltage across its terminals, are measured. The resistive part of the impedance of the transducer is then estimated based on the measurements of current and voltage. When the resistive impedance for the given type of transducer is well known at one temperature it is then possible to calculate the temperature when the resistive impedance changes. The estimated voice coil temperature is then fed to a signal attenuator or controller, which attenuates the output signal to the transducer.
Abstract translation: 由于过度的音圈偏移，导致机械夹紧，或由于音圈的过热导致材料的劣化，电动传感器会失效。 所公开的本发明涉及在这种换能器中防止多余音圈温度的保护。 通过传感器音圈的电流和其端子两端的电压进行测量。 然后基于电流和电压的测量来估计换能器的阻抗的电阻部分。 当给定类型的换能器的电阻阻抗在一个温度下是众所周知的时候，可以计算电阻阻抗变化时的温度。 然后将估计的音圈温度馈送到信号衰减器或控制器，该信号衰减器或控制器衰减到换能器的输出信号。
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公开(公告)号：US08232678B2
公开(公告)日：2012-07-31
申请号：US12518919
申请日：2007-12-14
Applicant: Kennet Skov Andersen
Inventor： Kennet Skov Andersen
IPC: H02J1/00
CPC classification number: H03F3/217 , H03F1/305 , Y10T307/707 , Y10T307/74 , Y10T307/766
Abstract: The invention relates to a pop reduction system for a switching power conversion system (0, 1), which system comprises an analogue control system (0) and a switching power stage (1), where the pop reduction system comprises an extra power stage (2), controllable means (3) for establishing or eliminating an extra signal path from the output of said control system (0) via said extra power stage (2) to the output terminal of said switching power conversion system (0, 1} and control means (34) for controlling said controllable means (3), whereby establishing or elimination of said extra signal path is attained. The invention furthermore relates to a corresponding method for pop reduction and generally to amplifier systems comprising the pop reduction system according to the invention.
Abstract translation: 本发明涉及一种用于开关电源转换系统（0,1）的弹跳减少系统，该系统包括模拟控制系统（0）和开关功率级（1），其中弹出减少系统包括额外的功率级（ 2），用于建立或消除从所述控制系统（0）的输出经由所述额外功率级（2）到所述开关功率转换系统（0,1）的输出端的额外信号路径的可控装置（3）和 控制装置（34），用于控制所述可控制装置（3），从而达到建立或消除所述额外的信号路径。本发明还涉及一种用于弹出缩减的通常对放大器系统的方法，该系统包括根据 发明。
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