公开(公告)号：US08009070B2

公开(公告)日：2011-08-30

申请号：US12665449

申请日：2007-06-21

申请人： Håkan Johansson ,  Per Löwenborg

发明人： Håkan Johansson ,  Per Löwenborg

IPC分类号： H03M1/06

CPC分类号： H03M1/0626 ,  H03M1/1215

摘要： A method for the compensation of frequency-response mismatch errors in M-channel time-interleaved ADCs. The compensation is done through an M-periodic time-varying filter hn(k)=hn mod M(k) (2), or, equivalently, a set of M time-invariant filters hn(k), n=0, 1, . . . , M−1. The overall compensation system is constructed by determining the M filter impulse responses hn(k) through M separate matrix inversions, where the size of the matrices equals the filter impulse response length. Also, a compensated M-channel time-interleaved ADC based on and performing the method.

摘要翻译： 一种用于补偿M通道时间交织ADC中的频率 - 响应失配误差的方法。 补偿通过M周期时变滤波器hn（k）= hn mod M（k）（2）完成，或者等效地，一组M个时不变滤波器hn（k），n = 0,1 ，。 。 。 ，M-1。 通过确定M个滤波器脉冲响应hn（k）到M个独立的矩阵反演来构造总体补偿系统，其中矩阵的大小等于滤波器脉冲响应长度。 此外，基于并执行该方法的经补偿的M信道时间交织ADC。

公开(公告)号：US20110067944A1

公开(公告)日：2011-03-24

申请号：US12992625

申请日：2008-06-17

申请人： Håkan Johansson

发明人： Håkan Johansson

IPC分类号： B62D5/12

CPC分类号： B62D12/00

摘要： A straight motion assisting device for a work machine is adapted for receiving an input indicative of a steering angle from a position of a moveable member and adapted for applying a restoring force for affecting the work machine towards a straight motion when the steering angle input indicates that the work machine deviates from the straight motion. The device includes a hydraulic system adapted to be effected by the displacement of the moveable member and adapted to apply the restoring force.

摘要翻译： 用于作业机械的直线运动辅助装置适于从可移动构件的位置接收指示转向角的输入，并且适于当转向角输入指示该运动辅助装置指示该直线运动时施加用于影响作业机器的恢复力 工作机器偏离直线运动。 该装置包括一个液压系统，该液压系统适于通过可移动构件的移动而实现并适于施加恢复力。

公开(公告)号：US20100192027A1

公开(公告)日：2010-07-29

申请号：US12665466

申请日：2007-06-21

申请人： Håkan Johansson

发明人： Håkan Johansson

IPC分类号： H03M13/00 ,  G06F11/07

CPC分类号： H03M1/0626 ,  H03M1/1215

摘要： A method for the compensation of frequency-response mismatch errors in M-channel time-interleaved ADCs. The compensation is done utilizing a technique that makes use of a number of fixed filters, that approximate differentiators of different orders, and a few variable multipliers that directly correspond to parameters in polynomial models of the M channel frequency responses. A compensated M-channel time-interleaved ADC is based on and can perform the method.

摘要翻译： 一种用于补偿M通道时间交织ADC中的频率 - 响应失配误差的方法。 利用利用多个固定滤波器，近似不同阶数的差分器的技术和与M个频道频率响应的多项式模型中的参数直接对应的几个可变乘法器进行补偿。 补偿的M通道时间交织ADC基于并可以执行该方法。

公开(公告)号：US08752434B2

公开(公告)日：2014-06-17

申请号：US13375937

申请日：2010-06-02

申请人： Håkan Johansson

发明人： Håkan Johansson

IPC分类号： G01L9/00 ,  G02B6/26

CPC分类号： G01L9/0079 ,  G01L19/04

摘要： A fiber optical system for pressure measurement has a pressure sensor element (4) with at least two parallel partially reflecting surfaces (5, 7), one of which is arranged on a diaphragm (6) movable with respect to another fixed said surface as a consequence of pressure differences across said diaphragm. Said surfaces are arranged so as to cause interference phenomena of light inciding substantially perpendicularly onto and reflected by the two surfaces depending upon the actual 10 distance between these surfaces. The pressure sensor element is made of material being stable at a continuous temperature up to at least 800° C. At least said diaphragm (6) of the sensor element is made of Si C, and at least a part (23) of the optical fiber (3) connecting to said sensor element is made of a material able to withstand a continuous temperature of at least 800° C.

摘要翻译： 用于压力测量的光纤光学系统具有压力传感器元件（4），其具有至少两个平行的部分反射表面（5,7），其中一个布置在相对于另一固定的所述表面可移动的隔膜（6）上，作为 所述隔膜上的压力差的结果。 所述表面被布置成根据这些表面之间的实际10距离，使两个表面基本垂直地入射到其上并被其反射的光的干涉现象。 压力传感器元件由在至少800℃的连续温度下稳定的材料制成。传感器元件的至少所述隔膜（6）由Si C制成，并且至少一部分（23）由光学 连接到所述传感器元件的纤维（3）由能够承受至少800℃的连续温度的材料制成。

公开(公告)号：US08307248B2

公开(公告)日：2012-11-06

申请号：US12306942

申请日：2006-06-30

申请人： Håkan Johansson ,  Per Löwenborg

发明人： Håkan Johansson ,  Per Löwenborg

IPC分类号： G06F11/00

CPC分类号： H03M1/1009 ,  H03M1/1215

摘要： A method and a module for estimating a plurality of relative channel-error for at least one signal with respect to a reference signal. The signals and are produced by an analog-to-digital module including parallel and time interleaved analog-to-digital converters and are received by an estimation module. The method is performed by the estimation module and includes defining a function representing a relationship between the reference signal and an arbitrary signal in the group of signals, selecting a first reference signal in the group of signals, selecting a second signal from the remaining signals in the group, optimizing the function so as to obtain an estimate of the plurality of relative channel-error, and repeating the selecting a second signal and optimizing the function for each remaining signal.

摘要翻译： 一种用于针对参考信号估计至少一个信号的多个相对信道误差的方法和模块。 该信号由包括并行和时间交织的模 - 数转换器的模数 - 数字模块产生，并由估计模块接收。 所述方法由所述估计模块执行，并且包括定义表示所述参考信号与所述信号组中的任意信号之间的关系的函数，选择所述信号组中的第一参考信号，从所述剩余信号中选择第二信号 所述组优化所述功能，以获得所述多个相对信道误差的估计，并重复选择第二信号并优化每个剩余信号的功能。

公开(公告)号：US20120099673A1

公开(公告)日：2012-04-26

申请号：US13256922

申请日：2009-03-20

申请人： Håkan Johansson

发明人： Håkan Johansson

IPC分类号： H04B1/10 ,  H04L25/49

CPC分类号： H04L27/364

摘要： Methods for compensation of imbalance between I (In-phase) and Q (Quadrature) signal paths (12a, 12b, 605a, 605b) in a quadrature receiver (8) and a quadrature transmitter (600) are disclosed. In the receiver case, the imbalance is compensated for by means of post-distortion in the digital domain. In the transmitter case, the imbalance is compensated for by means of pre-distortion in the digital domain. The methods can be carried out with a relatively low computational complexity. Signal-processing devices (30, 610) for carrying out the methods are disclosed as well. The same basic internal structure may be used for the signal-processing device (30) in the receiver case as for the signal processing device (610) in the transmitter case.

摘要翻译： 公开了用于补偿正交接收机（8）和正交发射机（600）中的I（同相）和Q（正交）信号路径（12a，12b，605a，605b）之间的不平衡的方法。 在接收机情况下，通过数字域中的后失真来补偿不平衡。 在发射机的情况下，通过在数字域中的预失真来补偿不平衡。 该方法可以以较低的计算复杂度进行。 还公开了用于执行方法的信号处理装置（30,610）。 对于接收机壳体中的信号处理装置（30），发射机壳体中的信号处理装置（610）可以使用相同的基本内部结构。