Design of output voltage waveform on magnetic encoder

Yu, Suzhu; Zhang, Huaiwu; Jiang, Xiangdong; Wen, Qiye; Bao-Shan, Han

doi:10.1016/j.jmmm.2004.04.074

Cited by 9 publications

(3 citation statements)

References 5 publications

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“…High resolution off-axis magnetic position sensors commonly use a specially magnetized ring mounted on the rotating part of the construction, and Hall-elements as sensing devices inside an integrated circuit mounted in front of the ring [3]. The magnet has to be close enough to the chip, so that the Hall-elements can detect magnetic field variation as the magnet rotates.…”

Section: Measurement Principlementioning

confidence: 99%

Design and analysis of a magnetic off-axis rotary position sensing device

Bakos

Gozse

Soumelidis

2014

22nd Mediterranean Conference on Control and Automation

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-In the paper design and analysis of an off-axis absolute rotary position sensor setup is described that is intended to use in realizing accurate and reliable absolute angle measurement to be applied in precise control of electric (e.g. vehicle) drives. A solution of using magnetic position sensing elements in combination with two differently magnetized ferromagnetic rings is presented. By assuming a specific setup the algorithm of determining absolute position is given, as well by analyzing the measurement errors, a compensation scheme is elaborated. By using this scheme the linearity error of the sensor setup can significantly be reduced without applying any expensive equipment.

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Section: Measurement Principlementioning

confidence: 99%

Design and analysis of a magnetic off-axis rotary position sensing device

Bakos

Gozse

Soumelidis

2014

22nd Mediterranean Conference on Control and Automation

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show abstract

“…For signal processing, some researches designed different sensor systems, such as high-speed CMOS magnetic angle sensor based on miniaturized circular vertical Hall devices; 9) development of a high resolution sensor element and a dual track magnetic encoder for rotational speed and position measurements; 10) a magnetic encoder comprises of six hall ICs based on lookingup table; 11) and output voltage waveform was designed on magnetic encoder. 12) For magnetic pole-pitches, the finer the pole-pitches in the magnetic scale the higher the resolution of the magnetic encoder. As a rule-of-thumb, a precision 1=1000 of the pole-pitch can be reached by a proper decoding algorithm.…”

Section: Introductionmentioning

confidence: 99%

Grooved multi-pole magnetic gratings for high-resolution positioning systems

Tseng

Chang

et al. 2015

Jpn. J. Appl. Phys.

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Magnetic encoders are much advantageous for precision positioning specifically under harsh environments. The finer the magnetic pole-pitches of the magnetic scale in a magnetic encoder the higher the resolution of the encoder. In this paper, a grooved multi-pole magnetic grating (MPMG) is substituted for conventional non-structured magnetic scale. A MPMG with pole-pitch of 200 µm was prepared by photo-lithography and electro-deposition. Simulation was first done to attain the relationship among magnetic flux density, magnetic properties of electrodeposited alloy layers, magnetizing directions and the grating dimensions. The MPMG can be fully magnetized for use by just a single pulse in a solenoid coil. Magnetic properties were investigated in which CoNiP layers were electrodeposited under various current densities. Measured magnetic flux densities versus grating heights, magnetizing directions and detection gaps on magnetized MPMG validate the applicability of ultra-fine pitched MPMG.

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“…Among the intelligent compensation methods, the artificial neural network compensation method has some advantages, such as less demand for the sample number [9], having a simple algorithm, and ability of arbitrary function approximation [10]. A novel design model based on slant multi-phase filter theory is presented in [11]. The nth harmonic voltage [n = 2nd, 3rd, and 4th... (V)] can be decreased easily.…”

Section: Introductionmentioning

confidence: 99%

Study on the Temperature Drift Adaptive Compensation Algorithm of a Magneto-Electric Encoder Based on a Simple Neuron

Wang¹,

Hao²,

Song³

et al. 2014

Journal of Power Electronics

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Magneto-electric encoders have been widely used in industry and military applications because of their good shock resistance, small volume, and convenient data processing. However, the characteristics of a magneto-electric encoder's signal generator and hall sensor changes minimally with temperature variation. These changes cause an angle drift. The main purpose of this study is to construct the compensation system of a neural network and constantly update weight coefficients of temperature correction by finite iteration calculation so that the angle value modified can approach the angle value at the target temperature. This approach is used in adaptive correction of the angle value.

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Design of output voltage waveform on magnetic encoder

Cited by 9 publications

References 5 publications

Design and analysis of a magnetic off-axis rotary position sensing device

Design and analysis of a magnetic off-axis rotary position sensing device

Grooved multi-pole magnetic gratings for high-resolution positioning systems

Study on the Temperature Drift Adaptive Compensation Algorithm of a Magneto-Electric Encoder Based on a Simple Neuron

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