Rotating high-frequency signal injection system and position extraction method based on double-angle coordinate system
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A high-frequency signal and coordinate system technology, used in control systems, vector control systems, and control electromechanical transmissions, etc., can solve problems such as poor extraction results, software delays, and amplitude errors, and achieve enhanced stability and practicality. the effect of avoiding delays, avoiding complexity
Active Publication Date: 2022-04-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF1 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Due to the existence of band-pass and low-pass filters in the extraction method, amplitude errors and phase offsets are introduced, and software delays are caused, and the system is relatively complicated.
At the same time, the extraction effect depends entirely on the processing effect of the filter, so the extraction effect is not good
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0102] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only for explaining the present invention, and are not intended to limit the scope of the present invention.
[0103] The invention discloses a rotating high-frequency signal injection system and a position extraction method based on a double-angle coordinate system. figure 1 It is a system structure block diagram of the present invention, including: power supply circuit, rectifier, inverter, permanent magnet synchronous motor, motor load module, motor current acquisition module, motor voltage acquisition module, Clark (abc axis-αβ axis) conversion module, Park (αβ axis-dq axis) transformation module, low-pass filter module, double-angle coordinate system analysis and calculation module, response current signal analysis module, rotor position extraction module, speed / angle calculation module, speed error module, speed PI (prop...
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 discloses a rotating high-frequency signal injection system and a position extraction method based on a double-angle coordinate system, and belongs to the technical field of position sensorless control. The injection system of the present invention includes: a power supply circuit, a rectifier, an inverter, a permanent magnet synchronous motor, a motor load module, a motor current acquisition module, a motor voltage acquisition module, a Clark transformation module, a Park transformation module, a double-angle coordinate system analysis and calculation module, Response current signal analysis module, rotor position extraction module, speed / angle calculation module, speed error module, d-axis current error module, d-axis current PI module, q-axis current error module, high-frequency signal injection module, Park inverse transformation module, etc. . The invention can realize the positionless operation of the motor at low speed, obtain the estimated rotor position signal, reduce the use of low-pass filter on the basis of the rotating high-frequency signal injection method, simplify the signal extraction process, and improve the response speed And the signal extraction accuracy is superior.
Description
technical field [0001] The invention relates to a rotating high-frequency signal injection system and a position extraction method based on a double-angle coordinate system, and belongs to the technical field of position sensorless control. Background technique [0002] Permanent magnet synchronous motors have mainstream advantages in the field of servo drives due to their small size, high efficiency, high power density, easy control, long service life and strong reliability. Propulsion, CNC machine tools, locomotive traction, electric vehicles and household appliances have been widely used in many fields, and have become research hotspots for scholars from all over the world. [0003] In the field of electric tools, its volume requirements and working environment are relatively complex, and traditional position sensors are difficult to meet its processing accuracy and work requirements, so positionless technology is particularly important. In order to meet the conditions o...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more