**Автори:** Христов, В. Д.
**Заглавие:** Оценяване на скоростта на двигател за постоянен ток с независимо възбуждане при регулиране на магнитния поток
**Ключови думи:** separately excited dc motor, extended kalman filter, nonlinear field weakening, speed estimation, control field.
**Абстракт:** This research considered to question related of estimate the speed of separately excited direct current motor to control magnetic field with weakening. The weakening of the magnetic field of the DC machine has a nonlinear character, which must be consistent with the use of nonlinear observer. Synthesizing an observer with an extended Kalman filter in Simulink and are made simulation studies. Simulation studies were carried out with a 40% reduction in the supply voltage to the exciting coil, respectively, reducing the magnetic field. The model of the dc motor comprises a non-linear relationship between excitation current and magnetic flux, this is accomplished by means of the magnetization curve of the motor. Studies were made and by 20% increase in resistance of anchors and excitation coil. From all simulation studies the mistakes estimated speed during steady state remain below 0.3%
**Библиография**
**Издание**
| Унитех -2015 Габрово, 2015, България, Габрово, ISBN ISSN1313-230X |
Пълен текст на публикацията | **Autors:** Hristov, V. D.
**Title:** ОЦЕНЯВАНЕ НА СКОРОСТТА НА ДВИГАТЕЛ ЗА ПОСТОЯНЕН ТОК С НЕЗАВИСИМО ВЪЗБУЖДАНЕ ПРИ РЕГУЛИРАНЕ НА МАГНИТНИЯ ПОТОК
**Keywords:** separately excited dc motor, extended kalman filter, nonlinear field weakening, speed estimation, control field.**Abstract:** This research considered to question related of estimate the speed of separately excited direct current motor to control magnetic field with weakening. The weakening of the magnetic field of the DC machine has a nonlinear character, which must be consistent with the use of nonlinear observer. Synthesizing an observer with an extended Kalman filter in Simulink and are made simulation studies. Simulation studies were carried out with a 40% reduction in the supply voltage to the exciting coil, respectively, reducing the magnetic field. The model of the dc motor comprises a non-linear relationship between excitation current and magnetic flux, this is accomplished by means of the magnetization curve of the motor. Studies were made and by 20% increase in resistance of anchors and excitation coil. From all simulation studies the mistakes estimated speed during steady state remain below 0.3%
**References**
**Issue**
| Унитех -2015 Габрово, 2015, Bulgaria, Габрово, ISBN ISSN1313-230X |
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