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1. 发明申请

WO2007043962A1 METHOD FOR SIGNAL PROCESSING OF CAPACITIVE MEASUREMENT SCALES 审中-公开
标题翻译：电容式测量信号信号处理方法
公开(公告)号：WO2007043962A1
公开(公告)日：2007-04-19
申请号：PCT/SE2006/050369
申请日：2006-10-03
申请人： HEXAGON METROLOGY AB , GUSTAFSSON, Carl-Erik , PEDERSEN, Steve Tveit , JOHANNESSEN, Svein
发明人： GUSTAFSSON, Carl-Erik , PEDERSEN, Steve Tveit , JOHANNESSEN, Svein
IPC分类号： G01D5/241 , G01B7/02 , G01B7/30
CPC分类号： G01D5/241 , G01D5/2415 , G01D5/244
摘要： A method for the signal processing of capacitive measurement scales intended for the measurement of lengths or angles, consisting of two parts that can move relative to each other provided with electrodes that together form condensers, the magnitudes of which are variable and depend on the relative position as specified by a sinusoidal relationship (x c ) between the two parts that can move relative to each other, whereby the first part has n electrodes evenly distributed over one measurement period and the second part has one electrode per measurement period, and that the electrodes in the first part are fed with n alternating voltages whereby the time displacements of the said alternating voltages relative to each other are (Fig I), where t 0 is the length of the period of n the said alternating voltage, whereby the electrode of the second mobile part captures in a capacitive manner a signal that is composed of one or several of the said alternating voltages and where the amplitude composition of the composite signal depends on the relative position (x) between the two parts. All n signal contributions to the said amplitude composite are measured and stored separately for each one of the n samplings.
摘要翻译：用于信号处理用于测量长度或角度的电容式测量尺度的方法，包括可相对于彼此移动的两个部分，所述两个部分设置有一起形成电容器的电极，所述电极一起形成电容器，电极的大小可变并且取决于相对位置如由相对于彼此移动的两个部分之间的正弦关系（x S c C c）所指定的，由此第一部分具有在一个测量周期内均匀分布的n个电极，并且第二部分具有一个电极测量周期，并且第一部分中的电极馈送有n个交流电压，由此所述交流电压相对于彼此的时间位移为（图1），其中t 0是< n表示所述交流电压的周期，由此第二移动部件的电极以电容方式捕获由一个或几个所述交流电压和wh组成的信号复合信号的幅度组成取决于两部分之间的相对位置（x）。对n个采样中的每一个分别测量并存储对所述振幅复合物的所有n个信号贡献。

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