Odd-Harmonic Characteristics of the Field-Modulated GMR Magnetometer

Jeng, Jin-Tsong; Hsu, Ting-Yu; Lu, Chih‐Cheng

doi:10.1109/tmag.2011.2148113

Cited by 12 publications

(3 citation statements)

References 10 publications

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“…However, this condition is hard to achieve, especially at higher frequencies. The presence of q(z) offering N q (ω) << 1 makes it possible to satisfy condition (18). Now, we define F (ω j ) as…”

Section: Remarkmentioning

confidence: 99%

“…In many real situations, reference/disturbance signals generally involve odd-harmonics only. These situations can be found in applications such as power electronic systems [8,9,13,14], magnetic rotor systems [15,16], nano-positioning systems [17], field-modulated magnetometer systems [18] and centrifugal compressors [19]. Inspired by this fact, the use of a general internal model is unnecessary if we only target odd-harmonics periodic components.…”

Section: Introductionmentioning

confidence: 99%

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Design of Fractional Order Odd-Harmonics Repetitive Controller for Discrete-Time Linear Systems with Experimental Validations

Kurniawan¹,

Prakosa²,

Wang

et al. 2022

Sensors

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This paper presents a simple and straightforward design of a discrete-time fractional-order odd-harmonics repetitive controller (RC). Unlike general RC designs, the proposed method utilizes an internal model with a half-period delay and a stabilizing controller with a fractional phase lead compensator. First, the odd-harmonics internal model representing odd-harmonics frequencies is constructed by using the information of the reference’s basis period and the preferred tracking bandwidth. Secondly, an optimization problem synthesized from the stability condition of the RC closed-loop system is solved to obtain the fractional phase lead compensator. Finally, the fractional term of the stabilizing controller is realized by using a causal and stable infinite impulse response (IIR) filter, where the filter coefficients are computed by applying the Thiran formula. Simulation and experimental validation on a servomotor system are conducted to verify the effectiveness of the proposed design.

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Section: Remarkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of Fractional Order Odd-Harmonics Repetitive Controller for Discrete-Time Linear Systems with Experimental Validations

Kurniawan¹,

Prakosa²,

Wang

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…The response of bridge to the external magnetic field is unipolar, nonlinear, and hysteretic, but it becomes bipolar, linear, and non-hysteretic when an ac modulation field and synchronous detection technique is applied. 7 The 36-turn modulation coils are wound around the sensors' packages. The total resistances of modulation coils in parallel are 0.51 X, and the total resistances of the three bridges in parallel are 1.54 kX at zero field.…”

Section: A Design Of the Tri-axis Magnetometermentioning

confidence: 99%

Tri-axis magnetometer with in-plane giant magnetoresistance sensors for compass application

Chiang

Jeng

Lai

et al. 2015

Journal of Applied Physics

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A tri-axis magnetometer comprising three giant-magnetoresistance sensors and a cylindrical fluxguide are implemented for compass application. The sensors are mounted on a single printed circuit board (PCB) board with their sensing axes in a plane. A calibration process involving matrix manipulation was employed to make the device function as a tri-axis magnetometer with orthogonal sensing directions. The capability of the device for compass application was demonstrated by measuring its azimuth response to the geomagnetic field about different rotation axes. The proposed calibration technique can be used for the magnetometer system with either orthogonal or nonorthogonal sensor arrangement. V C 2015 AIP Publishing LLC. [http://dx.

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High-Resolution Pinning GMR Sensors for Extremely Low Frequencies Powered by a Simple Alternating Current–Biased Scheme

Luong

2020

J Supercond Nov Magn

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Odd-Harmonic Characteristics of the Field-Modulated GMR Magnetometer

Cited by 12 publications

References 10 publications

Design of Fractional Order Odd-Harmonics Repetitive Controller for Discrete-Time Linear Systems with Experimental Validations

Design of Fractional Order Odd-Harmonics Repetitive Controller for Discrete-Time Linear Systems with Experimental Validations

Tri-axis magnetometer with in-plane giant magnetoresistance sensors for compass application

High-Resolution Pinning GMR Sensors for Extremely Low Frequencies Powered by a Simple Alternating Current–Biased Scheme

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