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    • 1. 发明公开
    • Method for obtaining information on the phase of a rotating system
    • Verfahren zum Erhalt von Informationen zur Phase eines Drehsystems
    • EP2626670A1
    • 2013-08-14
    • EP12154606.3
    • 2012-02-09
    • SICK STEGMANN GmbH
    • Francescon, Massimo
    • G01D5/24G01D5/241
    • G06F17/141G01D5/24G01D5/2415
    • The invention relates to a Method for obtaining information on the phase of a rotating system based on determination of the fundamental component of an incoming signal provided by a sensor (110) driven by a periodic modulation function (PHA,PHB,PHC, PHD) with angular frequency ω , said method comprising the steps of a) reading the present output value S k , (k=0,...,N-1) of the sensor at a sequence of N points of time during a first period of the periodic modulation function (PHA,PHB,PHC, PHD), b) storing read output values S k or a value derived from this output value at least temporarily in a memory, c) extracting information on the phase of the rotating system, wherein said information is extracted based on evaluation of a function of the type F k t = ∑ j = k - N + 1 k S j [ f c N ⁢ j ⁢ t + if s N ⁢ j ⁢ t ) ] , wherein f c (N,j,t) =cos((( j mod N) - 1) · [ ωt + φ ( N )]) and f s (N,j,t) = sin((( j mod N ) - 1)[ ωt + φ ( N )]), and d) sampling and storing sequentially further output values S k , k=N,N+1,... of the sensor at corresponding points of time in the following periods of the periodic modulation function (PHA,PHB,PHC, PHD), wherein after each reading information on the phase of the rotating system based on the function F k ( t ) is extracted and a controller device (100) for application of this method.
    • 本发明涉及一种基于由周期调制功能(PHA,PHB,PHC,PHD)驱动的传感器(110)提供的输入信号的基波分量的确定来获得旋转系统的相位的信息的方法, 角频率é,所述方法包括以下步骤:a)在所述传感器的第一时段期间以N个时间点的顺序读取所述传感器的当前输出值S k,(k = 0,...,N-1) 周期调制功能(PHA,PHB,PHC,PHD),b)将读取输出值S k或从该输出值导出的值至少临时存储在存储器中,c)提取关于旋转系统的相位的信息,其中所述 基于对类型F kt ='j = k-N + 1 k S j [fc N ¢j ¢t + if s N ¢j ¢t]的函数的评估提取信息,其中 fc(N,j,t)= cos(((j mod N)-1)·[Ét+Æ(N)])和fs(N,j,t)= sin(((j mod N) )[Ét+Æ(N)]),以及d)采样和存储 在周期性调制函数(PHA,PHB,PHC,PHD)的后续周期中的相应时间点,传感器的输出值S k,k = N,N + 1,..., 提取基于函数F k(t)的旋转系统的相位,以及用于应用该方法的控制器装置(100)。
    • 3. 发明公开
    • Method for phase drift correction of a capacitive position encoder and capacitive position encoder
    • 一种用于电容位置编码器的相移修正和电容位置编码器方法
    • EP2767805A1
    • 2014-08-20
    • EP13155056.8
    • 2013-02-13
    • SICK STEGMANN GmbH
    • Francescon, Massimo
    • G01D5/241
    • G01D3/036G01D5/2415
    • Provided are a Method for compensation of phase drift in a capacitive position encoder (100) comprising a capacitive position sensor (110), an analog signal source (120) for providing a phase shifted, periodic excitation signal to the capacitive position sensor and a signal processing chain comprising an analog block (130) for processing an analog output signal of said capacitive position sensor (110), an A/D conversion block (140) for converting an analog output signal of the analog block (130) to a digital signal, a digital block (160) for processing a digital signal and a DFT block (170) for performing a discrete Fourier Transform on a digital output signal obtained from the digital block (160) for obtaining digital frequency signals that represent the sine and cosine of an angle or a phase to be measured comprising the steps of creating a superimposed signal by adding a periodic test signal provided by the analog signal source (120) to the analog output signal of the capacitive position sensor (110), processing the superimposed signal by the analog block (130) and the A/D conversion block (140) to obtain a processed superimposed signal, decomposing the processed superimposed signal into a processed test signal component and a processed sensor output signal component, analyzing the processed periodic test signal component to extract information on the phase drift induced during analog processing by the analog block (130) and A/D conversion by the A/D conversion block (140), analyzing the processed sensor output signal component to extract position information, and using the extracted information on phase drift induced during analog processing by the analog block (130) and A/D conversion by the A/D conversion block (140) for correction of the position information.and a capacitive position encoder (100) for performing said method.
    • 本发明提供一种用于在电容位置编码器(100),包括:电容式位置传感器(110)转换为模拟信号源(120),用于向所述电容位置传感器和信号提供相移,周期性激励信号相位漂移的补偿的方法 处理链的变换为模拟的模拟块(130)的输出信号转换为数字信号,其包括用于所述电容位置传感器(110),以A / D转换块(140)的模拟输出信号的处理模拟块(130)的 ,用于处理数字信号和DFT块(170),用于对从用于获得数字频率信号的数字块(160)而获得的数字输出信号的离散傅里叶变换的数字块(160)那样表示的正弦和余弦 上角度或相位被测量通过添加由模拟信号源(120)到所述电容pos的模拟输出信号提供一个周期性的测试信号,包括:创建一个叠加信号的步骤 银行足球比赛传感器(110),处理由模拟块(130)和A / D转换块(140)的叠加信号,以获得经处理的叠加信号,经处理的叠加的信号分解成处理测试信号分量和处理的传感器输出 信号分量,分析经处理的周期性的测试信号分量,以提取由所述模拟块(130)和A / D转换由A / D转换块(140)的模拟处理过程中所引起的相位漂移的信息,分析该处理的传感器输出信号 分量以提取位置信息,并且使用由模拟块(130)和A / D转换由A / D转换块(140),用于位置校正的模拟处理期间引起上提取的相位漂移的信息information.and电容 位置编码器(100),用于执行所述方法。
    • 10. 发明公开
    • Capacitive position encoder
    • 电容式位置编码器
    • EP2733468A1
    • 2014-05-21
    • EP12193197.6
    • 2012-11-19
    • SICK STEGMANN GmbH
    • Francescon, Massimo
    • G01D5/241
    • G01D5/243G01D5/2405
    • The invention relates to a capacitive position encoder (1), comprising at least one capacitor with a first capacitor plate and a second capacitor plate, a dielectric modulator that is movably arranged between said first capacitor plate and said second capacitor plate, a signal source (11) for providing a phase-shifted excitation signal to the first capacitor plate of said at least one capacitor, and a charge amplifier (20) that is electrically connected to the second capacitor plate of said at least one capacitor, wherein a feedback loop (21) of the charge amplifier (20) comprises a feedback capacitor (C f ), wherein the capacitive position encoder (1) also comprises a shock cancellation circuit (30) that forms a parallel circuit with the feedback loop (21) including the feedback capacitor (C f ) and that the shock cancellation circuit (30) comprises a low pass filter (31).
    • 本发明涉及一种电容式位置编码器(1),其包括至少一个电容器(具有第一电容器板和第二电容器板),电介质调制器(其可移动地布置在所述第一电容器板和所述第二电容器板之间),信号源 11),用于向所述至少一个电容器的第一电容器板提供相移激励信号,以及电连接到所述至少一个电容器的第二电容器板的电荷放大器(20),其中反馈回路( 所述电容性位置编码器(1)还包括冲击消除电路(30),所述冲击消除电路与所述反馈回路(21)形成并联电路,所述反馈回路包括所述反馈电容器(Cf) (Cf)并且所述震动消除电路(30)包括低通滤波器(31)。