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1.发明申请METHOD FOR CONTROLLING THE QUALITY OF INDUSTRIAL PROCESSES, IN PARTICULAR LASER-WELDING PROCESSES 有权控制工业过程质量，特别是激光焊接工艺的方法公开(公告)号：US20100228377A1
公开(公告)日：2010-09-09
申请号：US12724724
申请日：2010-03-16
CPC分类号： B23K26/032 , G05B2219/37217 , Y10S706/90 , Y10S706/904
摘要： A system and a method for controlling the quality of an industrial process, of the type that comprises the steps of: providing one or more reference signals for the industrial process; acquiring one or more real signals that are indicative of the quality of said industrial process; and comparing said one or more reference signals with said one or more real signals in order to identify defects in said industrial process. According to the invention, the method moreover comprises the operations of: obtaining a transformed signal from said reference signal; obtaining a transformed signal from said real signal; and calculating energies of said transformed reference signal and said real signal, respectively, said comparison operation comprising; comparing with one another said energies of said transformed reference signal and said transformed real signal, respectively, in order to extract corresponding time-frequency distribution for selected frequency values; calculating energies of said time-frequency distributions; and comparing the energies of said time-frequency distributions with threshold values in order to identify energy values associated to defects.
摘要翻译： 一种用于控制工业过程质量的系统和方法，包括以下步骤：为工业过程提供一个或多个参考信号; 获取指示所述工业过程的质量的一个或多个真实信号; 以及将所述一个或多个参考信号与所述一个或多个实信号进行比较，以便识别所述工业过程中的缺陷。 根据本发明，该方法还包括以下操作：从所述参考信号获得变换信号; 从所述真实信号获得变换信号; 以及分别计算所述变换的参考信号和所述实信号的能量，所述比较操作包括： 彼此分别表示所述变换的参考信号和所述经变换的实信号的能量，以便提取所选频率值的相应时频分布; 计算所述时频分布的能量; 以及将所述时间 - 频率分布的能量与阈值进行比较，以便识别与缺陷相关联的能量值。
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公开(公告)号：US20110160912A1
公开(公告)日：2011-06-30
申请号：US12977098
申请日：2010-12-23
CPC分类号： G06F7/5525
摘要： An embodiment is a method, and related system, to implement the square root extraction operation, which grants a 32 bits precision, which has high execution speed and is able to process a decimal radicand. An embodiment relates to a method for controlling an electric machine, comprising the detection of the value of at least one electrical quantity characterizing the machine operation and processing the detected value of said electrical quantity. The control method controls the machine operation on the basis of this processing. In particular the processing of the detected value of the electrical quantity comprises calculating a square root of a radicand value related to the detected value of electrical quantities. The calculation of the square root includes: calculating an approximated value of the square root, having a first precision, and then calculating a corrective value and combining said approximated value with said corrective value to obtain a square root value having a second precision greater than the first precision.
摘要翻译： 实施例是一种实现平方根提取操作的方法和相关系统，其提供32位精度，其具有高执行速度并能够处理小数点。 一个实施例涉及一种用于控制电机的方法，包括检测表征机器操作的至少一个电量的值并处理所述电量的检测值。 该控制方法在此处理的基础上控制机器运行。 特别地，电量检测值的处理包括计算与检测到的电量相关的根数的平方根。 平方根的计算包括：计算具有第一精度的平方根的近似值，然后计算校正值并将所述近似值与所述校正值组合以获得具有大于第二精度的第二精度的平方根值 第一精度。
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3.发明申请METHOD AND DEVICE FOR ESTIMATING THE ANGULAR POSITION OF THE ROTOR OF A BRUSHLESS MOTOR 有权用于估计无刷电动机转子角度位置的方法和装置公开(公告)号：US20080180046A1
公开(公告)日：2008-07-31
申请号：US12017845
申请日：2008-01-22
IPC分类号： H02P6/16
CPC分类号： H02P6/182
摘要： A method is for estimating an angular position of a rotor of a motor having position sensors along the circumference of a stator and generating digital signals that switch each time the rotor crosses certain angular positions. The method includes storing rotor angular positions at every digital signal switching, and determining for each rotor revolution a time interval elapsed between a current and a precedent switching edge of the signal generated. The method also includes estimating the angular position during a current rotor revolution by identifying which position sensor generated the last detected switching edge. The corresponding angular position and the time interval elapsed between two consecutive rotor crossings, through a same angular position, correspond to a sum between the angular position and a product between a fraction of the time interval elapsed from the corresponding precedent switching edge multiplied by 360° and a number of polar pairs.
摘要翻译： 一种方法用于估计具有位置传感器的电动机的转子在定子的圆周上的角度位置，并产生每当转子穿过特定角度位置时切换的数字信号。 该方法包括在每个数字信号切换时存储转子角度位置，并且确定每个转子旋转在所产生的信号的当前和先前切换边缘之间经过的时间间隔。 该方法还包括通过识别产生最后检测到的切换边缘的位置传感器来估计当前转子旋转期间的角位置。 在相同角度位置的两个连续的转子交叉点之间经过的对应的角位置和时间间隔对应于从相应的先前切换边缘乘以360°经过的时间间隔之间的角度位置和乘积之和 和一些极性对。
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4.发明申请METHOD AND RELATED DEVICE FOR ESTIMATING TWO CURRENTS FLOWING SIMULTANEOUSLY THROUGH RESPECTIVE WINDINGS OF A POLY-PHASE ELECTRICAL LOAD DRIVEN IN SVM MODE 有权用于估计通过SVM模式驱动的多相电气负载的相应绕组同时流动的两个电流的方法和相关装置公开(公告)号：US20080174260A1
公开(公告)日：2008-07-24
申请号：US12015188
申请日：2008-01-16
IPC分类号： H02P21/14 , G05F1/12 , G01R19/257 , G01R19/25
CPC分类号： G01R19/2513 , G01R19/2509 , G01R29/16 , H02P21/22 , H02P27/06
摘要： A method for estimating values assumed at a certain instant of each period by currents flowing respectively in two distinct windings of a poly-phase load controlled in a space vector modulation (SVM) mode, using a same measuring device, may include coupling the measuring device to the first winding and measuring a current flowing therethrough with an anticipation from the certain instant smaller than or equal to an SVM half-period. The method may also include coupling the measuring device to the second winding, measuring a current flowing therethrough at the certain instant, coupling the measuring device to the first winding, and measuring a current flowing therethrough with a delay equal to the anticipation. The method may also include estimating a value assumed at the certain instant by the current flowing through the first winding based upon the two measured values with the anticipation and with the delay respectively.
摘要翻译： 通过使用相同的测量装置分别在以空间矢量调制（SVM）模式控制的多相负载的两个不同绕组中流动的电流来估计在每个周期的某个时刻假设的值的方法，可以包括将测量装置 到第一绕组并且从小于或等于SVM半周期的某一时刻预测流过其中的电流。 该方法还可以包括将测量装置耦合到第二绕组，测量在特定瞬间流过其中的电流，将测量装置耦合到第一绕组，并以等于预期的延迟来测量流过其中的电流。 该方法还可以包括基于分别具有预期和延迟的两个测量值来估计在特定时刻假设流过第一绕组的电流的值。
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