Model of MR Sensor with Slant Multiphase Filtering
Yu Shi · Piezoelectrics and Acoustooptics · 2005
A novel design model based on slant multi-phase filter(SMPF) theory is presented. The nth harmonic voltage (n=2,3,4_...()) can be reduced easily by this design. The minimum of distortion factor was observed when the difference of slant phase is 2π/3. Magnetic encoder with sinusoidal output voltage waveform has been developed, and sinusoidal output waveform can be easily improved when φ is equal to 5°/3. This result is agree with SMPF theory value φ=4.904° and can be widely used in magneto resistive sensorfields.