公开(公告)号：US07583039B2

公开(公告)日：2009-09-01

申请号：US10585169

申请日：2004-12-29

申请人： Minxian Zhong ,  Bin He ,  Xiaodong Yao ,  Junzhong Zou

发明人： Minxian Zhong ,  Bin He ,  Xiaodong Yao ,  Junzhong Zou

IPC分类号： H02P6/18

CPC分类号： H02P6/182 ,  H02P6/181 ,  H02P6/34

摘要： The present invention discloses a control technology for brushless DC motor, in which firstly it is to build or import a motor running parameters' database, then detect the signals always running and the signals closely relevant to the rotor's rotating state such as the voltage and the current, and process these signals and figure out the signals about the rotor's position. Wherein these detected signals should be filtered before being used, and the best filter is the low-pass filter to cut out the high frequency components, and the cut-off frequency of the low-pass filter are determined by the motor running voltage U and PWM signal width when the motor is running at no load, finally determine if the motor is working properly by means of the motor running parameters stored in the database in advance, that is to determine if the detected value is identical with the one predicted from the database. Depending on the results from the detecting and comparison above, the control signal is generated to adjust the motor running state. With the technical method in this invention, the position sensor is not needed. This reduces the motor's external wiring amounts and the wiring complexity. Also the motor's seal is improved. Meanwhile, it is possible to measure the rotor's position accurately in any state according to this invention technology. Thus the motor running state can be controlled properly.

摘要翻译： 本发明公开了一种无刷直流电动机的控制技术，其中首先是建立或导入运行参数数据库的电机，然后检测始终运行的信号和与转子旋转状态密切相关的信号，如电压和 电流和处理这些信号，并找出关于转子位置的信号。 其中这些检测信号应在使用前进行滤波，最佳滤波器是用于切断高频分量的低通滤波器，低通滤波器的截止频率由电机运行电压U和 当电机无负载运行时的PWM信号宽度，最后通过预先存储在数据库中的电机运行参数确定电机是否正常工作，即确定检测值是否与从 数据库。 根据上述检测和比较的结果，产生控制信号以调节电机运行状态。 利用本发明的技术方法，不需要位置传感器。 这样可以减少电机的外部接线量和布线的复杂性。 此外，电机的密封件也得到了改进。 同时，根据本发明的技术，可以在任何状态下精确地测量转子的位置。 因此可以正确控制电机运行状态。

公开(公告)号：US20080231217A1

公开(公告)日：2008-09-25

申请号：US10585169

申请日：2004-12-29

申请人： Minxian Zhong ,  Bin He ,  Xiaodong Yao ,  Junzhong Zou

发明人： Minxian Zhong ,  Bin He ,  Xiaodong Yao ,  Junzhong Zou

IPC分类号： H02P6/18

CPC分类号： H02P6/182 ,  H02P6/181 ,  H02P6/34

摘要： The present invention discloses a control technology for brushless DC motor, in which firstly it is to build or import a motor running parameters' database, then detect the signals always running and the signals closely relevant to the rotor's rotating state such as the voltage and the current, and process these signals and figure out the signals about the rotor's position. Wherein these detected signals should be filtered before being used, and the best filter is the low-pass filter to cut out the high frequency components, and the cut-off frequency of the low-pass filter are determined by the motor running voltage U and PWM signal width when the motor is running at no load, finally determine if the motor is working properly by means of the motor running parameters stored in the database in advance, that is to determine if the detected value is identical with the one predicted from the database. Depending on the results from the detecting and comparison above, the control signal is generated to adjust the motor running state. With the technical method in this invention, the position sensor is not needed. This reduces the motor's external wiring amounts and the wiring complexity. Also the motor's seal is improved. Meanwhile, it is possible to measure the rotor's position accurately in any state according to this invention technology. Thus the motor running state can be controlled properly.

摘要翻译： 本发明公开了一种无刷直流电动机的控制技术，其中首先是建立或导入运行参数数据库的电机，然后检测始终运行的信号和与转子旋转状态密切相关的信号，如电压和 电流和处理这些信号，并找出关于转子位置的信号。 其中这些检测信号应在使用前进行滤波，最佳滤波器是用于切断高频分量的低通滤波器，低通滤波器的截止频率由电机运行电压U和 当电机无负载运行时的PWM信号宽度，最后通过预先存储在数据库中的电机运行参数确定电机是否正常工作，即确定检测值是否与从 数据库。 根据上述检测和比较的结果，产生控制信号以调节电机运行状态。 利用本发明的技术方法，不需要位置传感器。 这样可以减少电机的外部接线量和布线的复杂性。 此外，电机的密封件也得到了改进。 同时，根据本发明的技术，可以在任何状态下精确地测量转子的位置。 因此可以正确控制电机运行状态。