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3D orientation vector estimation for subcomponents of space object imagery

open access: yesSPIE Proceedings, 1997
We describe a model-based image analysis system which automatically estimates the 3D orientation vector of satellites and their sub-components by analyzing images obtained from a ground-based optical surveillance system. We adopt a two-step approach: pose estimates are derived from comparisons with a model database; pose refinements are derived from ...
Xun Du   +2 more
openaire   +2 more sources
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The research on space vector control of induction motor system based on rotor field orientation

2011 Chinese Control and Decision Conference (CCDC), 2011
In this paper, the mathematical model of induction motor based on rotor field orientation in synchronous frame is introduced. Based on this, the decoupling of stator voltage is implemented using the feed forward decoupling current controller. The problem in the accuracy of flux estimation is settled using voltage model and current model flux mixing ...
Yongkui Man
exaly   +2 more sources

A stator flux oriented vector-controlled induction motor drive with space vector PWM and flux vector synthesis by neural networks

Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129), 2001
A stator flux oriented vector-controlled induction motor drive is described where the space vector PWM (SVM) and stator flux vector estimation are implemented by artificial neural networks (ANN). Artificial neural networks, when implemented by dedicated hardware ASIC chips, provide extreme simplification and fast execution for control and feedback ...
J.O. Pinto, B.K. Bose, L.E.B. da Silva
openaire   +1 more source

General construction of time-domain filters for orientation data

open access: yesIEEE Transactions on Visualization and Computer Graphics, 2002
Capturing live motion has gained considerable attention in computer animation as an important motion generation technique. Canned motion data are comprised of both position and orientation components.
Jehee Lee, Sung Yong Shin
exaly   +1 more source

Predictive field-oriented control of PMSM with space vector modulation technique

Frontiers of Electrical and Electronic Engineering in China, 2009
This paper is concerned with two popular and powerful methods in electrical drive applications: field-oriented control (FOC) and space vector modulation (SVM). The proposed FOC-SVM method is incorporated with a predictive current control (PCC)-based technique.
F. Heydari   +3 more
openaire   +1 more source

The space vector control for induction motors based on stator flux orientation

2011 6th IEEE Conference on Industrial Electronics and Applications, 2011
Accuracy of flux amplitude and phase is critical to field-oriented control [1]. The estimation of rotor flux is easily affected by rotor time constant and compensation terms are difficult to realize. In this paper, a method based on stator flux oriented is proposed. The stator flux is estimated by integrating motor EMF. The phase voltage reconstruction
Yongkui Man, Xuehai Chen
openaire   +1 more source

Alternative Methods of Synchronous Space-Vector PWM for Transport-Oriented Converters and Drives

2019 International Conference on Electrical Drives & Power Electronics (EDPE), 2019
This manuscript presents short survey of novel methods, schemes, techniques, and algorithms of feedforward synchronous space-vector modulation elaborated for scalar control of power converters and induction motor drives for transport systems. It includes both description of features and peculiarities of these new modulation strategies, and examples of ...
Valentin Oleschuk   +2 more
openaire   +1 more source

A New Approach For Constructing A Vector-Oriented Control Theory By State Space Method

SPIE Proceedings, 1987
This paper presents a new attractive approach for a vector control system of AC machine by state space method. First state equations of an induction machine suitable for the current control are derived. It becomes clear that the induction machine can be described as three input-three output controlled object.
Toshiaki Murata   +2 more
openaire   +1 more source

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