Motor mover magnetic pole initial position identification system and method
A technology of initial position and magnetic pole, which is applied in the field of motor mover magnetic pole initial position identification system, can solve the problems of complex control logic, misjudgment of initial position identification of direct drive motor, etc., and achieve the effect of improving accuracy and reliability
Active Publication Date: 2018-07-06
SUZHOU INOVANCE TECH CO LTD
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Problems solved by technology
[0008] The technical problem to be solved by the present invention is to provide a new system and method for identifying the initial position of the magnetic pole of the motor mover in view of the problems of misjudgment and complex control logic in the identification of the initial position of the direct drive motor
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[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0038] Such as figure 1 As shown, it is a schematic flowchart of an embodiment of the method for identifying the initial position of the magnetic pole of the motor mover according to the present invention. This method can be used for identifying the initial position of the magnetic pole of the mover of the motor, and can greatly improve the accuracy and reliability of the identification of the initial position of the magnetic pole. This method is especially suitable for AC permanent magnet synchronous linear motors, of course, this method can also be applied to AC permanent magnet synchronous rotar...
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The invention provides a motor mover magnetic pole initial position identification system and method. The method comprises steps that a first voltage amplitude is acquired according to motor parameters of a motor; after combining the first voltage amplitude with multiple voltage phase angles in the same electrical cycle to form multiple first voltage vectors, the first voltage vectors are respectively inputted to a coil of the motor, and multiple first current response peak values are acquired through sampling the coil of the motor; multiple magnetic pole identification positions are acquiredaccording to the multiple first current response peak values, and one of the multiple magnetic pole identification positions is selected as the mover magnetic pole initial position. The method is advantaged in that through inputting the multiple voltage vectors with the same amplitude and different phase angles into the coil of the motor in the same electrical cycle, the mover magnetic pole initial position is calculated according to the response current, and magnetic pole identification precision and reliability can be substantially improved.
Description
technical field [0001] The invention relates to the field of motor control, and more specifically relates to a system and method for identifying the initial position of a magnetic pole of a motor mover. Background technique [0002] Direct Drive Linear Motor (Direct DriverLine, DDL) is a device that directly converts electrical energy into linear motion mechanical energy without any other conversion mechanism. According to the structural form, the direct drive linear motor can be either a "moving primary" or a "moving secondary". Usually, the movable part is called "mover", and the fixed part is called "stator". The direct drive linear motor has the characteristics of strong thrust, low loss, small time constant, and fast response. At the same time, the intermediate transmission link necessary for the traditional rotary motor to achieve linear motion is omitted, which greatly improves the servo performance and processing efficiency. [0003] In practical applications, the d...
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Patent Timeline
Login to View More IPC IPC(8): H02P21/32H02P21/18H02P25/06
CPCH02P25/06H02P2203/03H02P2207/00H02P21/18H02P21/32
Inventor 李海瑞
Owner SUZHOU INOVANCE TECH CO LTD