A signal processing method and device
A signal processing and signal technology, applied in the field of signal processing methods and devices, can solve problems such as inaccurate rotor position signals of synchronous motors
Active Publication Date: 2019-12-06
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In order to solve the problem of inaccurate rotor position signals of synchronous motors measured in the prior art, the present invention proposes a signal processing method and device, which can effectively remove superimposed periodic oscillation interference signals and obtain accurate rotor position signals of synchronous motors
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] The embodiment of the present invention discloses a signal processing method, see figure 1 , the method includes:
[0037] S101. Process the measured speed signal of the rotor of the synchronous motor to obtain an actual speed signal of the rotor of the synchronous motor;
[0038] Specifically, the resolver can be used to measure the speed signal and position signal of the synchronous motor rotor:
[0039] The decoder chip provides the excitation sign...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a signal processing method and device. The signal processing method comprises the steps of processing a measured speed signal of a synchronous motor rotor to obtain an actual speed signal of the synchronous motor rotor; processing the speed signal and the actual speed signal of the synchronous motor rotor to obtain a superposed interference speed signal; processing the superposed interference speed signal to obtain a superposed interference position signal; and performing difference-value-obtaining processing on the measured position signal and the superposed interference position signal of the synchronous motor rotor to obtain the actual position signal of the synchronous motor rotor. By adoption of the signal processing method provided by the invention, the superposed periodical oscillation interference signal in measurement of the position signal of the synchronous motor rotor can be effectively removed, so that the accurate position signal of the synchronous motor rotor can be obtained.
Description
technical field [0001] The invention relates to the technical field of synchronous motor control, in particular to a signal processing method and device. Background technique [0002] Accurately obtaining the rotor position of a synchronous motor is a necessary condition to ensure reliable operation and high-performance control of the motor. With the continuous improvement of the performance of synchronous motors and the continuous improvement of modern industry's requirements for process control accuracy, how to accurately obtain the rotor position of synchronous motors has become a research hotspot and difficulty in the field of synchronous motor control technology. [0003] In view of the advantages of cost and volume, the existing technology generally uses a resolver as a position signal sensor of a synchronous motor. The resolver obtains an analog synchronous motor rotor position signal, and then converts the analog synchronous motor rotor position signal into a digital...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/18
CPCH02P6/181
Inventor 冯江华许峻峰文宇良郑汉锋张朝阳黄佳德曾小凡刘勇何亚屏肖磊
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST