This paper is dealing with a comparative analysis, from technical point of view of the solutions with the highest potentiality utilized in sonar heads drives. Even though the use of DC servomotors is a convenient solu...This paper is dealing with a comparative analysis, from technical point of view of the solutions with the highest potentiality utilized in sonar heads drives. Even though the use of DC servomotors is a convenient solution for most customers, from some modem analysis criteria points of view, this type of drive system has a low reliability and a greater impact on the environment, compared to AC servomotors. From this class of AC servomotors, high behaviors, in such an application, have stepper motors and electronically commutated motor （brushless DC）. That is why, analysis in this paper, balances these two classes of AC servomotors. The systems performed are analyzed in Matlab/Simulink and PowerSim environments.展开更多
High-speed Brushless DC Motors(BLDCMs)usually adopt a sensorless control strategy and operate in three-phase six-state drive mode.However,the sampling errors of the rotor position and the driving method increase the I...High-speed Brushless DC Motors(BLDCMs)usually adopt a sensorless control strategy and operate in three-phase six-state drive mode.However,the sampling errors of the rotor position and the driving method increase the Internal Power Angle(IPA),resulting in a decrease in the efficiency of the system.Conventional IPA reduction strategies are either sensitive to motor parameters,or ignore diode freewheeling during the commutation process,or require additional current sensors.In this paper,a new strategy to reduce the IPA is proposed.Firstly,a Zero-Crossing Point(ZCP)detection method for the back-EMF without filter is proposed to reduce the sampling errors of the rotor position.Secondly,the relationship between the non-energized terminal voltage and the ZCP of the corresponding back-EMF is analyzed.The non-energized terminal voltage that has completed the diode freewheeling is divided into two triangles by half of the bus voltage.When the IPA is suppressed,the areas of the two triangles are equal.Thirdly,an advanced angle for reducing the IPA is obtained through a PI regulator which can eliminate the deviation between the two areas.Finally,both a simulation model and an experimental circuit are built to verify the proposed control strategy.展开更多
在无刷直流电机(Brushless DC Motor,简称BLDCM)数学模型的基础上,分析了传统PWM调制方式对BLDCM非导通相引起续流电流的原因,以及该续流电流导致非换相期间的电磁转矩脉动的现象。通过原理分析及数学推导,提出在三相逆变桥输入端加上...在无刷直流电机(Brushless DC Motor,简称BLDCM)数学模型的基础上,分析了传统PWM调制方式对BLDCM非导通相引起续流电流的原因,以及该续流电流导致非换相期间的电磁转矩脉动的现象。通过原理分析及数学推导,提出在三相逆变桥输入端加上前级直流变换器,以控制电机的新策略。该方法在理论上消除了BLDCM在非换相区内的转矩脉动,并且利用试验证明了该方法的有效性。展开更多
工业平缝机由传统的交流异步电机驱动变为技术先进的伺服驱动已形成发展趋势。该文介绍了一种基于模糊P ID算法的无刷直流电机控制系统。系统包括控制器、驱动器、永磁无刷直流电机和电磁铁4部分。文中以控制器为主线,介绍了模糊P ID算...工业平缝机由传统的交流异步电机驱动变为技术先进的伺服驱动已形成发展趋势。该文介绍了一种基于模糊P ID算法的无刷直流电机控制系统。系统包括控制器、驱动器、永磁无刷直流电机和电磁铁4部分。文中以控制器为主线,介绍了模糊P ID算法以及模糊控制规则,对控制结果进行了S im u link仿真并取得了满意的效果。展开更多
文摘This paper is dealing with a comparative analysis, from technical point of view of the solutions with the highest potentiality utilized in sonar heads drives. Even though the use of DC servomotors is a convenient solution for most customers, from some modem analysis criteria points of view, this type of drive system has a low reliability and a greater impact on the environment, compared to AC servomotors. From this class of AC servomotors, high behaviors, in such an application, have stepper motors and electronically commutated motor （brushless DC）. That is why, analysis in this paper, balances these two classes of AC servomotors. The systems performed are analyzed in Matlab/Simulink and PowerSim environments.
基金supported by the National Natural Science Foundation of China(No.51877006)the Key R&D Program of Shaanxi Province,China(No.2021GY-340 and 2020GY-140)the Aeronautical Science Foundation of China(No.20181953020)。
文摘High-speed Brushless DC Motors(BLDCMs)usually adopt a sensorless control strategy and operate in three-phase six-state drive mode.However,the sampling errors of the rotor position and the driving method increase the Internal Power Angle(IPA),resulting in a decrease in the efficiency of the system.Conventional IPA reduction strategies are either sensitive to motor parameters,or ignore diode freewheeling during the commutation process,or require additional current sensors.In this paper,a new strategy to reduce the IPA is proposed.Firstly,a Zero-Crossing Point(ZCP)detection method for the back-EMF without filter is proposed to reduce the sampling errors of the rotor position.Secondly,the relationship between the non-energized terminal voltage and the ZCP of the corresponding back-EMF is analyzed.The non-energized terminal voltage that has completed the diode freewheeling is divided into two triangles by half of the bus voltage.When the IPA is suppressed,the areas of the two triangles are equal.Thirdly,an advanced angle for reducing the IPA is obtained through a PI regulator which can eliminate the deviation between the two areas.Finally,both a simulation model and an experimental circuit are built to verify the proposed control strategy.
文摘在无刷直流电机(Brushless DC Motor,简称BLDCM)数学模型的基础上,分析了传统PWM调制方式对BLDCM非导通相引起续流电流的原因,以及该续流电流导致非换相期间的电磁转矩脉动的现象。通过原理分析及数学推导,提出在三相逆变桥输入端加上前级直流变换器,以控制电机的新策略。该方法在理论上消除了BLDCM在非换相区内的转矩脉动,并且利用试验证明了该方法的有效性。
文摘工业平缝机由传统的交流异步电机驱动变为技术先进的伺服驱动已形成发展趋势。该文介绍了一种基于模糊P ID算法的无刷直流电机控制系统。系统包括控制器、驱动器、永磁无刷直流电机和电磁铁4部分。文中以控制器为主线,介绍了模糊P ID算法以及模糊控制规则,对控制结果进行了S im u link仿真并取得了满意的效果。
