Two-dimensional magnetic microsensor with on-chip signal processing for contactless angle measurement

Hàberli, A.; Schneider, Michael L.; Malcovati, P.; Castagnetti, R.; Maloberti, Franco; Baltes, H.

doi:10.1109/4.545811

Cited by 53 publications

(17 citation statements)

References 2 publications

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“…A rotating gimbal in one axis with a low frequency gives us an unacceptable resolution of angular velocity. As a result no better than the 1 mili-radians accuracy of stabilization can be achieved [6]. * e-mail: cezaryzych@o2.pl C. Zych, A. Wrońska-Zych, J. Dudczyk, and A. Kawalec …”

Section: Feedback Control Loopmentioning

confidence: 99%

A correction in feedback loop applied to two-axis gimbal stabilization

Zych¹,

Wrońska-Zych²,

Dudczyk³

et al. 2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract.A two-axis gimbal system can be used for stabilizing platform equipped with observation system like cameras or different measurement units. The most important advantageous of using a gimbal stabilization is a possibility to provide not disturbed information or data from a measurement unit. This disturbance can proceed from external working conditions. The described stabilization algorithm of a gimbal system bases on a regulator with a feedback loop. Steering parameters are calculated from quaternion transformation angular velocities received from gyroscopes. This data are fed into the input of Proportional Integral Derivative (PID) controller. Their input signal is compared with earned value in the feedback loop. The paper presents the way of increasing the position's accuracy by getting it in the feedback loop. The data fusion from a positioning sensor and a gyroscope results in much better accuracy of stabilization.

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Section: Feedback Control Loopmentioning

confidence: 99%

A correction in feedback loop applied to two-axis gimbal stabilization

Zych¹,

Wrońska-Zych²,

Dudczyk³

et al. 2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…The microsystem approach is, therefore, particularly suited for this application, since it is possible to realize a low-cost single chip containing both the magnetic sensor and the interface circuits required to perform an accurate current measurement [7].…”

Section: Smart Sensor For Magnetic Current Monitoringmentioning

confidence: 99%

Technology‐Driven Alternatives for Smart Sensor Interfaces

Baschirotto

Malcovati

2003

Sensors Update

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The importance of integrated microsystems is continuously growing because of the combination of two trends: the progress of silicon sensor technology and the introduction of new techniques for interface circuits. In this chapter we show how different approaches to the implementation of smart sensor systems, basically driven by the available fabrication technologies, can lead to successful designs. Three examples are presented: a fully integrated current monitor, a biaxial accelerometer, and a rotational accelerometer. The current monitor is an example of single chip implementation. It supports two different operating ranges (20 A and 200 A full scale), provides digitally programmable gain and offset with an on-chip PROM, and achieves 9 bits of resolution and ± 0.6 LSB of linearity. The biaxial accelerometer and the rotational accelerometer are examples of implementations based on two chips in the same package. They achieve 80 dB of dynamic range with ±1 g full-scale signal over a 30 Hz bandwidth and 38 dB of dynamic range with 200 rad/s 2 full-scale signal over an 800 Hz bandwidth.

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“…Although lateral Hall devices show excellent performance for many applications, a sensitivity parallel to the chip surface is required [21,67,68]. A sensitivity parallel to the chip surface is achieved with the so-called vertical Hall device [69][70][71][72][73][74][75].…”

Section: Vertical Cmos Trench Hall Devicesmentioning

confidence: 99%

“…As another application, a wear-free angle detection system is demonstrated [67,68]. The approach provides a low-cost solution well suited for a harsh environment.…”

Section: 5mentioning

confidence: 99%

“…A concept meeting all of the above requirements is possible by detecting the two components of the magnetic inductions B x and B y parallel to the chip plane by, eg, a magnetotransistor or a vertical Hall device as shown in Figure 5.51 [67,69]. However, magnetotransistors suffer from a large offset voltage resulting in poor absolute accuraccy for angle detection [77].…”

Section: Wear-free Angle Measurementmentioning

confidence: 99%

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