Speed Estimation Applying Sinc-filter to a Period-based Method for Incremental Position Encoder

Kazemirova, Yulia; Podzorova, Valentina; Anuchin, Alecksey; Lashkevich, Maxim; Aliamkin, Dmitry; Vagapov, Yuriy

doi:10.1109/upec.2019.8893535

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…The contribution of the period method on lower angular speeds is 12.3%, with a decrease to 1.1% for the 4000 RPM (418.88 rad s ´1) test, as presented in Table 6. For the period method, lower angular speeds presented lower uncertainty, motivated by the dependence of the uncertainty upon the angular speed itself, as shown in (14), as expected based on the results depicted in Table 3. Due to the frequency method's resolution, its uncertainty for all cases was 23 RPM (2.41 rad s ´1).…”

Section: Bηsupporting

confidence: 80%

“…The calculation of ∆ω p performed in (14) was performed for a single pulse; however, the impact of the resolution can be attenuated by using multiple pulses. In this case, the acquisition time window is defined as follows:…”

Section: Period Measurementmentioning

confidence: 99%

“…Among the many methods proposed in the literature for estimating angular speed based on incremental encoders, two are considered to be fundamental: the frequency measurement method, in which the angular speed is estimated according to the number of encoder pulses in a given time window, and the period measurement method, in which the angular speed is estimated based on the period between consecutive encoder pulses [12]. These methods are well established in industry, and the more sophisticated estimation methods in the literature mostly rely on these concepts as their cores while improving precision and performance by of combining both approaches or including filtering techniques in the estimation process [10,[13][14][15].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of Angular Speed Calculation Methods from Encoder Measurements on the Test Uncertainty of Electric Motor Efficiency

Machado,

Thaler,

Pacheco

et al. 2024

Metrology

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The imperative need to advance the development of more efficient electric motors requires the meticulous measurement of small increments while minimizing the associated uncertainty in dynamometer tests. One of the key variables in such tests is the angular speed, which is typically obtained based on encoder measurements. This paper proposes a systematic measurement uncertainty assessment method based on the Guide to the Expression of Uncertainty for the two most widely used methods for angular speed measurement, namely, the frequency and period methods. In addition, the impact of the angular speed calculation method on the efficiency test uncertainty is assessed using an automatic test rig for electric motors. Our experimental results consider both steady-state and dynamic analyses. The results show that the period measurement method provides measurements with lower uncertainty for the encoders typically used in such test rigs, about 30 times less than the uncertainty determined for the frequency measurement method. Based on these results, the choice of a proper method can drastically decrease the angular speed uncertainty, and consequently the motor efficiency uncertainty, without increasing instrumentation cost.

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Section: Bηsupporting

confidence: 80%

Section: Period Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of Angular Speed Calculation Methods from Encoder Measurements on the Test Uncertainty of Electric Motor Efficiency

Machado,

Thaler,

Pacheco

et al. 2024

Metrology

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show abstract

“…The OSE is widely used in angular motion parameters measurement due to its high accuracy, good dynamic characteristics, and wide measurement range [ 15 , 16 ]. The output signals of an OSE are two orthogonal phase-modulated sinusoidal signals with the same amplitude.…”

Section: Thd Calculation Methods Adopting Osementioning

confidence: 99%

Methods for Comprehensive Calibration of a Low-Frequency Angular Acceleration Rotary Table

Feng

Yan

Yue

et al. 2023

Sensors

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The total harmonic distortion (THD) index and its calculation methods are presented to calibrate the sinusoidal motion of the low-frequency angular acceleration rotary table (LFAART) and make up the incomprehensive evaluation based on the angular acceleration amplitude and frequency error indexes. The THD is calculated from two measurement schemes: a unique scheme combining the optical shaft encoder and the laser triangulation sensor and a regular scheme using the fiber optical gyroscope (FOG). An improved reversing moments recognition method is presented to upgrade the accuracy of solving the angular motion amplitude based on optical shaft encoder output. The field experiment shows that the difference in the THD values achieved using the combining scheme and FOG is within 0.11% when the signal-to-noise ratio of the FOG signal is higher than 7.7 dB, indicating the accuracy of the proposed methods and the feasibility of taking THD as the index.

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“…An incremental rotary encoder is a device that converts mechanical movement into an electrical signal. It is employed vastly in industrial automation systems like speed estimation of motors [20], [21]. It is used in measuring lengths, angular position, and speed.…”

Section: Encodermentioning

confidence: 99%

Design and implementation of a control system for a steel plate cutting production line using programmable logic controller

shamarti‬‏

Selman

2023

IJECE

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<span lang="EN-US">Most of the old machines installed in different industries are managed manually by system operators. This action makes their productivity low and not suitable to cover the needs in other sectors. In addition, these machines are not without risks due to the proximity of the operators to them. The installing a new full system instead of the old one on the same site requires very high costs. So, modernizing the same old system by making its operation automatic has become necessary to reduce the economic cost significantly. In this paper, an automatic control system based on <a name="_Hlk124492942"></a>programmable logic controller (PLC) for the cutting steel plate machine that had been managed manually in a factory is designed. The system includes an Encoder that is used to specify the length of the steel plate to be cut by sending a signal to the PLC. The system operation is completed by using human machine interface (HMI) unit to monitor and control the system performance by the system operator. A practical test for the developed system offered more productivity (more than 30%), more safety, reduces human efforts and the total daily production cost (less than one third).</span>

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Speed Estimation Applying Sinc-filter to a Period-based Method for Incremental Position Encoder

Cited by 7 publications

References 10 publications

Impact of Angular Speed Calculation Methods from Encoder Measurements on the Test Uncertainty of Electric Motor Efficiency

Impact of Angular Speed Calculation Methods from Encoder Measurements on the Test Uncertainty of Electric Motor Efficiency

Methods for Comprehensive Calibration of a Low-Frequency Angular Acceleration Rotary Table

Design and implementation of a control system for a steel plate cutting production line using programmable logic controller

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