Digital Measurement of Angular Velocity for Instrumentation and Control

diCenzo, Colin D.; Szabados, B.; Sinha, Ν.Κ.

doi:10.1109/tieci.1976.351354

Cited by 36 publications

(8 citation statements)

References 5 publications

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“…Being narrow, the filter ends up filtering part of the signal. Some work was been done to improve numerical differentiation in signals [6,10,11] including the angular velocity [10]. Our goal is to propose an alternative method that allows the implementation to be simple and that can be implemented in real-time.…”

Section: Measurement Using An Encodermentioning

confidence: 99%

Real time angular velocity measure using median filter

Martins¹,

Dias²,

Queiroz

2013

Proceeding Series of the Brazilian Society of Computational and Applied Mathematics

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Abstract⎯We present a simple approach to reduce the noise present in velocity measurements when using encoders. The approach is to use the median filter together with a simple first order linear filter and show that this combination avoids the errors due to warp of the encoder (when the angle goes from 2π back to 0 of vice versa). We test this new method and compare with different kinds of filters and algorithms to avoid the warp problem. We show that the proposed method can be implemented only with simple arithmetic and is perfectly suitable for embedded and hardware implementation.

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Section: Measurement Using An Encodermentioning

confidence: 99%

Real time angular velocity measure using median filter

Martins¹,

Dias²,

Queiroz

2013

Proceeding Series of the Brazilian Society of Computational and Applied Mathematics

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“…The current source is controlled by the output signal of the oscillator. The current is caused by the change of the resistance as described by (3).…”

Section: Sensor Principlementioning

confidence: 99%

A novel low-cost noncontact resistive potentiometric sensor for the measurement of low speeds

Meijer

1998

IEEE Trans. Instrum. Meas.

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“…In the meteorology studies, the anemometer is an important instrument in the atmospheric analyses [14] and [15], where the authors used the equations of angular motion and frequency to determine the rotation of the instrument. In the work developed by [16], the authors discuss a study involving ultrasound transducers to measure wind speed at an approximate cost of US$ 150.00.…”

Section: Introductionmentioning

confidence: 99%

An inexpensive anemometer using Arduino board

et al. 2019

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In all studies involving wind speed, such as meteorology, wind turbines and agriculture accurate speed information for decision making is required. There are several types of anemometers, with medium and high costs, such as cup, hot wire and pitot tubes, the hot wire being more sensitive and expensive than others. The device developed in this work is the cup anemometer, that is easy to build. The great advantage of this device is the low cost, with an approximate value of US$ 50.00, using simple materials that are easy to find in commercial stores. The Reed Switch sensor is also another advantage as it does not require a sophisticated programming, as well as the open platform Arduino. The use of theoretical aerodynamic drag coefficients and the presented calculations resulted in values very close to a commercial anemometer. The coefficient of determination between the cup Anemometer and the standard sensor of Meteorological Research Institute IPMet/Brazil is R 2 =0.9999, indicating strong correlation between the instruments. As the reference anemometer (IPMet) has high embedded technology and the prototype is low cost, we conclude that the project has an attractive cost benefit for possible development and production, reaching the objective of this work.

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Digital Measurement of Angular Velocity for Instrumentation and Control

Cited by 36 publications

References 5 publications

Real time angular velocity measure using median filter

Real time angular velocity measure using median filter

A novel low-cost noncontact resistive potentiometric sensor for the measurement of low speeds

An inexpensive anemometer using Arduino board

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