Motor position detecting method and device as well as method using device
A technology of motor position and detection method, which is applied in the direction of motor control, electrical components, electronic commutator, etc., can solve the problems of poor anti-interference ability of SPI digital signal, achieve improved anti-interference and reliability, improve reliability, The effect of improving accuracy and reliability
Inactive Publication Date: 2015-02-18
奇瑞新能源汽车股份有限公司
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[0007] The invention provides a motor position detection method, a motor position detection device, and a method using the device, which are used to solve the technical problem of poor anti-interference ability of the SPI digital signal in the detection of the position signal in the prior art when the motor is running at high speed
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[0038] In order for those skilled in the art to better understand the technical solutions of the present invention, the motor position detection method and the motor position detection device provided by the embodiments of the present invention, as well as the method of using the device, are described in detail below with reference to the accompanying drawings.
[0039]The motor position detection method provided in the embodiment of the present invention detects the rotor position of the motor through a motor position detection device. Before introducing the motor position detection method provided by the embodiment of the present invention, the motor position detection device provided by the embodiment of the present invention is firstly introduced.
[0040] An embodiment of the present invention provides a motor position detection device, please refer to figure 1 , is a schematic diagram of the framework of the motor position detection device provided by the embodiment of t...
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The invention discloses a motor position detecting method and device as well as a method using the device. The motor position detecting method comprises the following steps: step S101, controlling a decoding chip to start motor position detection by a main control chip; step S102, obtaining a rotary transformer input signal output by a rotary transformer by virtue of the decoding chip, generating an SPI digital signal and an ABZ pulse signal according to the rotary transformer input signal, and sending the SPI digital signal and the ABZ pulse signal to the main control chip; and step S103, receiving the SPI digital signal and the ABZ pulse signal generated by the decoding chip by the main control chip, and obtaining motor position information according to the SPI digital signal or the ABZ pulse signal. According to the motor position detecting method, the main control chip is used for obtaining the motor position information according to the SPI digital signal or the ABZ pulse signal; the motor position can be obtained by virtue of the ABZ pulse signal in a high-speed operation stage; by virtue of the ABZ pulse signal, the interference resistance and reliability of the signal can be improved, so that the motor control accuracy and reliability are improved.
Description
technical field [0001] The invention belongs to the technical field of electric vehicles, and relates to a motor position detection method, a motor position detection device and a method for using the device. Background technique [0002] In the drive system of pure electric vehicles, sine wave permanent magnet synchronous motors are generally used, which have significant advantages such as reliable operation, small size, light weight, low loss, high efficiency, and flexible shapes and sizes. [0003] In the sine wave permanent magnet synchronous motor, the motor includes a stator and a rotor. The stator is surrounded by the outer side of the rotor. There are multiple permanent magnet pole pairs on the rotor. Usually, the number of permanent magnet pole pairs is 2 to 4. The permanent magnet pole pairs generate The magnetic field is a sine wave magnetic field. The stator includes three-phase windings, and the windings of each phase are symmetrical. By applying voltage to the ...
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Login to View More IPC IPC(8): H02P6/16
CPCH02P6/16H02P2203/03H02P2207/05
Inventor 罗晓林伟义陈立冲王瑛王金磊蔡交明
Owner 奇瑞新能源汽车股份有限公司