Invention Grant
US08321176B2 Method for determining a twist angle 失效
确定扭转角的方法

  • Patent Title: Method for determining a twist angle
  • Patent Title (中): 确定扭转角的方法
  • Application No.: US12865211
    Application Date: 2009-01-28
  • Publication No.: US08321176B2
    Publication Date: 2012-11-27
  • Inventor: Martin Hempl
  • Applicant: Martin Hempl
  • Applicant Address: DE München
  • Assignee: Siemens Aktiengesellschaft
  • Current Assignee: Siemens Aktiengesellschaft
  • Current Assignee Address: DE München
  • Priority: DE102008007372 20080201
  • International Application: PCT/EP2009/050930 WO 20090128
  • International Announcement: WO2009/095398 WO 20090806
  • Main IPC: G06F15/00
  • IPC: G06F15/00 G01B7/30
Method for determining a twist angle
Abstract:
A method for determining an angle between a first shaft section and a second shaft section is provided. The 0° position of the first shaft section is determined by a first shaft signal, and the 0° position of the second shaft section is determined by a second shaft signal. The first shaft signal and the second shaft signal are subsequently each decomposed using Fourier analysis into frequency components of harmonic oscillations, wherein frequencies are calculated for the first shaft signal, and frequencies are calculated for the second shaft signal. The frequencies are each calculated as complex pointers from absolute value and phase of the order thereof wherein each pointer describes the angular velocity of the particular frequency. For each frequency, the particular angle of the complex number is then divided by the order, wherein standardized complex pointers are calculated. The standardized complex pointers are added complexly.
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