Harmonic Suppression and Torque Ripple Reduction of a High-Speed Permanent Magnet Spindle Motor

Zhao, Haining; Shu, Yu; Sun, Feng

doi:10.1109/access.2021.3070010

Cited by 11 publications

(5 citation statements)

References 35 publications

(21 reference statements)

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“…Taking a landscape building as an example, the whole process of building a model using point cloud data in 3ds Max is analyzed. When constructing a 3D model, the point cloud data is regarded as a reference, the point cloud data of the building is captured, and the main outline of the building is drawn; select the extrude command in the modifier, convert the sketched building spline into a 3D wall model, an editable polygon, and then draw the door of the building based on the point cloud data by dividing, connecting, contouring, and chamfering windows and other accessories [12].…”

Section: Overall Architecture Of the 3d Virtual Landscape Planning Sy...mentioning

confidence: 99%

Application of 3D Virtual Scanning Technology in Landscape Planning of Complex Landscape Gardens

Chun-mei

Zheng

2022

Wireless Communications and Mobile Computing

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In order to solve the problem of technical precision in landscape planning of complex landscape garden topography, the authors propose a research using 3D virtual scanning technology. The main content of this research is based on the overall architecture of the 3D virtual landscape planning system, the construction of the system architecture, and the optimization of VR design scenarios; finally, through experiments, the feasibility of 3D virtual scanning technology is obtained. Experimental results show that the number of landscape connection points measured by the author is more than 1500, and the accuracy is between 0.2 and 0.6 pixels, indicating that for the mutual connection and orientation between models, the system has a good application prospect in the landscape planning of complex landscape garden topography. The research on 3D virtual scanning technology is proven, and it can meet the application in the landscape planning of complex landscape garden topography.

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Section: Overall Architecture Of the 3d Virtual Landscape Planning Sy...mentioning

confidence: 99%

Application of 3D Virtual Scanning Technology in Landscape Planning of Complex Landscape Gardens

Chun-mei

Zheng

2022

Wireless Communications and Mobile Computing

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“…As mentioned earlier, the BEMF waveform has a sinusoidal shape, and this eventually leads to the generation of the output harmonics of the third and fifth orders. Particularly, the current induced by the impression of reluctance slots has an air-gap flux density that carries the harmonic loss information of the rotor bars [41,42] and can be measured from the VMD of the sub-spindle motor current. Hence, this approach addresses the uncertainty in the motor current indicator for TCM mentioned in reference [11].…”

Section: Definition Of a Tool Wear Model Based On The Motor Systemmentioning

confidence: 99%

Motor Current-Based Degradation Modeling for Tool Wear Hybrid Prognostics in Turning Process

Gavahian

Mechefske

2023

Machines

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For many machines with turning process systems, the application of economical indirect Tool Condition Monitoring (TCM) is enhanced by utilizing internal encoder spindle motor current signals. In this study, we proposed a novel approach to extract the total harmonic distortion (THD) feature associated with the metal cutting frequency of a specific working tool in the time domain. Our method entailed the application of filtered variational mode decomposition (VMD) combined with envelope analysis to demodulate the motor current signal and define TCM features based on the THD of odd harmonics, which are more related to the motor structure. These features serve as inputs for a hybrid prognostics technique, employing the Geometric Brownian Motion (GBM) to stochastically model the degradation process along with a deep learning transformer-based framework called the time series Transformer (TST) to improve the life prediction. Finally, to validate our approach, we conducted experiments based on 36 sets of tool run-to-wear data extracted from a CNC machine operating under turning process conditions using two different tools. Finally, we compared the degradation models based on the extracted odd-THD and even-THD features.

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“…Much work has been done using FEM to design and optimize motor structures [11]. FEM is a technique that is used for a wide range of topologies such as SMPM machines [12], [13], [14], [15], [16], permanent-magnet (PM) machines with inserted PMs [17], [18], [19], [20], [21], machines combining inserted PMs and PM-assisted synchronous reluctance motors [22]. Also, FEM has been used widely for axialflux permanent-magnet motors [23].…”

Section: Introductionmentioning

confidence: 99%

A Multi-Objective Finite-Element Method Optimization That Reduces Computation Resources Through Subdomain Model Assistance, for Surface-Mounted Permanent-Magnet Machines Used in Motion Systems

2023

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Surface-mounted permanent-magnet (PM) motors are widely used in motion control systems because of their high peak torque-to-inertia ratio. These motors exhibit high magnetic saturation to produce high peak torque. A precise finite-element model (FEM) is needed to optimize these motors. It requires high computation power, especially for multi-objective optimizations. On the contrary, subdomain models require low computing power but are inaccurate when magnetic saturation occurs. To solve this problem, we use a subdomain-assisted FEM optimization method (SAFEMOM) that combines subdomain models for preoptimization and FEM for refined optimization. We provide the quantitative measurement methods to compare SAFEMOM with FEM-only optimization. If the constraints in the magnetic fluxes in the subdomain part of SAFEMOM are based on the actual saturation value of the materials, then the advantage of SAFEMOM is not significant. The machines in this study use non-linear material with a knee point at 1.3 T and hence show heavy magnetic saturation above 1.5 T. In that case, contrary to what could be intuitively thought, we need to increase the magnetic flux density limit to 2.6 T -3.0 T in SAFEMOM to have a significant advantage. SAFEMOM reduces about 80% of computing time to obtain a slightly better convergence than the one using FEM only. Also, if limited computing resource is allowed, SAFEMOM gives an error reduced by a factor of nearly eight compared to the optimization error using FEM only. Those results are validated on a family of surface-mounted permanent-magnet machines with a wide range of design parameters.

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Harmonic Suppression and Torque Ripple Reduction of a High-Speed Permanent Magnet Spindle Motor

Cited by 11 publications

References 35 publications

Application of 3D Virtual Scanning Technology in Landscape Planning of Complex Landscape Gardens

Application of 3D Virtual Scanning Technology in Landscape Planning of Complex Landscape Gardens

Motor Current-Based Degradation Modeling for Tool Wear Hybrid Prognostics in Turning Process

A Multi-Objective Finite-Element Method Optimization That Reduces Computation Resources Through Subdomain Model Assistance, for Surface-Mounted Permanent-Magnet Machines Used in Motion Systems

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