A Novel Fast-Filtering Method for Rotational Speed of the BLDC Motor Drive Applied to Valve Actuator

Nerat, Marko; Vrančić, Damir

doi:10.1109/tmech.2015.2505321

Cited by 11 publications

(4 citation statements)

References 18 publications

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“…Researchers' efforts focus on compensating for sensor placement errors by assuming perfect symmetry of the rotating magnetic element (Figure 1 δ mr = 0). This makes it possible to treat the multipolar machine as a machine with one pair of poles [14][15][16]. Defining the errors in the measurement of the speed and position of the motor shaft, resulting only from the incorrect arrangement of sensors, is a large simplification in the analysis of the operation of the real system for determining the position of the BLDC motor rotor.…”

Section: Errors In the Positioning Of Motor Sensorsmentioning

confidence: 99%

Determining the Position of the Brushless DC Motor Rotor

Kolano

2020

Energies

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In brushless direct current (or BLDC) motors with more than one pole pair, the status of standard shaft position sensors assumes the same distribution several times for its full mechanical rotation. As a result, a simple analysis of the signals reflecting their state does not allow any determination of the mechanical position of the shaft of such a machine. This paper presents a new method for determining the mechanical position of a BLDC motor rotor with a number of pole pairs greater than one. In contrast to the methods used so far, it allows us to determine the mechanical position using only the standard position sensors in which most BLDC motors are equipped. The paper describes a method of determining the mechanical position of the rotor by analyzing the distribution of errors resulting from the accuracy proposed by the BLDC motor’s Hall sensor system. Imprecise indications of the rotor position, resulting from the limited accuracy of the production process, offer a possibility of an indirect determination of the rotor’s angular position of such a machine.

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Section: Errors In the Positioning Of Motor Sensorsmentioning

confidence: 99%

Determining the Position of the Brushless DC Motor Rotor

Kolano

2020

Energies

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“…The permanent magnet adopts radial magnetization and it is mounted on the rotor yoke surface in an axially segmented way. The axial segmentation is designed to reduce the eddy current loss [14]. However, the high speed of the HSPMG leads to a great rotor surface linear velocity.…”

Section: Parameters and Modelmentioning

confidence: 99%

“…Furthermore, speed is very important for machine performance research. The fast-filtering algorithm can be implemented based on speed jitter [14]. In order to achieve the purpose of torque control, speed can be used as a feedback signal in torque control [15].…”

Section: Introductionmentioning

confidence: 99%

Archives of Electrical Engineering

Qiu¹,

Wei²,

Zhao³

et al. 2019

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When the machine is at high speed, serious problems occur, such as high frequency loss, difficult thermal management, and the rotor structural strength insufficiency. In this paper, the performances of two high-speed permanent magnet generators (HSP-MGs) with different rotational speeds and the same torque are compared and analyzed. The two-dimensional finite element model (FEM) of the 117 kW, 60 000 rpm HSPMG is established. By comparing a calculation result and test data, the accuracy of the model is verified. On this basis, the 40 kW, 20 000 rpm HSPMG is designed and the FEM is established. The relationship between the voltage regulation sensitivity and power factor of the two HSPMGs is determined. The influence mechanism of the voltage regulation sensitivity is further revealed. In addition, the air-gap flux density is decomposed by the Fourier transform principle, and the influence degree of different harmonic orders on the HSPMG performance is determined. The method to reduce the harmonic content is further proposed. Finally, the method to improve the HSPMG overload capacity is obtained by studying the maximum power. The research showed that the HSPMG at low speed (20 000 rpm) has high sensitivity of the voltage regulation, while the HSPMG at high speed (60 000 rpm) is superior to the HSPMG at low speed in reducing the harmonic content and increasing the overload capacity.

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“…Researchers have devised various methods for measuring speed and position in actuators. Marko Nerat et al [19] introduced a novel fast-filtering method for rotational speed measurements, specifically designed for brushless direct current (BLDC) motor drives. However, it is worth noting that their proposed fast-filtering algorithm operated under the assumption that speed jitter is periodic, which may not always hold true in real-world scenarios.…”

Section: Introductionmentioning

confidence: 99%

Reduced Kinematic Error for Position Accuracy in a High-Torque, Lightweight Actuator

Megalingam,

Vadivel,

Manoharan

et al. 2024

Actuators

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In this paper, we propose the design, development, and testing of high-torque and lightweight actuators suitable for lightweight robotic applications. The detailed design of the actuator module is described, and its performance evaluation is also presented. Further, the mathematical modelling of the actuator is discussed. Various performance analysis tests were carried out for the elucidation of the designed actuator, which included primarily position, velocity, and torque analyses. The position accuracy analysis included position repeatability at the maximum payload for calculating the acceptable tolerance. The velocity elucidation included a velocity test for the variable load. The torque analysis of the actuator was completed at different supply currents. These tests and the results indicate that the proposed actuator has high precision in reaching the desired position and provides a stabilized performance with variable loads up to the limit for which it was designed. Based on the torque output and the weight, the proposed actuator could be a good fit for lightweight robotic applications.

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A Novel Fast-Filtering Method for Rotational Speed of the BLDC Motor Drive Applied to Valve Actuator

Cited by 11 publications

References 18 publications

Determining the Position of the Brushless DC Motor Rotor

Determining the Position of the Brushless DC Motor Rotor

Archives of Electrical Engineering

Reduced Kinematic Error for Position Accuracy in a High-Torque, Lightweight Actuator

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