Feature analysis method for linear servo system based on saturation drive signals

A servo system and feature analysis technology, applied in electrical testing/monitoring, etc., can solve problems that affect the design and development of motion controllers, it is difficult to obtain system characteristics, it is difficult to accurately characterize frequency information, etc., and achieve good time-frequency localization Features, flexible debugging process, easy to realize the effect on site

CN103792936AActive Publication Date: 2014-05-14SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-05-14

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Abstract

The invention provides a feature analysis method for a linear servo system. According to the electrical and mechanical features of the linear servo system, saturation drive signals, amplitude values and duration time are selected; under the amplitude values and the duration time, a saturation drive experiment is carried out on the linear servo system, and actual displacement data in the motion direction of the linear servo system are recorded; the actual displacement data are analyzed through a difference method, and the speed data and the acceleration data of the linear servo system in the motion direction of the linear servo system under the extreme motion condition are obtained; the acceleration data are analyzed through Morlet wavelet transformation, and the frequency data of the linear servo system under the extreme motion condition are obtained; direct data reference bases are provided for the design and development of a motion controller and the study of a motion planning and control method. The feature analysis method for the linear servo system is easy and convenient to implement, small in algorithm operand, easy to achieve in the field and flexible in debugging process.
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Description

technical field

[0001] The invention relates to a system feature analysis method in the technical field of motion control, in particular to a linear servo system feature analysis method based on a saturated excitation signal. Background technique

[0002] Compared with the traditional rotary motor, the revolutionary feature of the linear motor is that it directly converts electrical energy into mechanical energy of linear motion, eliminating the intermediate link of conversion from rotary motion to linear motion. With its high thrust-to-weight ratio, high stiffness, high acceleration and high precision, linear motors have become the mainstream core components of high-acceleration, high-speed, high-precision motion system equipment, and have been widely used in high-end CNC machine tools, IC packaging and manufacturing, and microelectronics. application. With the continuous improvement of production efficiency and production quality, the requirements for acceleration, speed ...

Examples

Embodiment Construction

[0042] The following is a detailed description of the embodiments of the present invention, giving detailed implementation and specific operation process, but the scope of protection of the present invention is not limited to the following embodiments.

[0043] In this embodiment, the permanent magnet linear synchronous motor (Permanent Magnet Linear Synchronous Motor, PMLSM) is used as the research object to directly drive the Y-axis of the electromechanical system. Carry out saturation excitation experiments on the linear servo system, and then analyze the speed information and acceleration information of the Y-axis under extreme motion conditions, as well as the natural frequency of the permanent magnet linear synchronous motor under extreme motion conditions

[0044] Such as figure 1 As shown, the linear servo system characteristic analysis method provided in this embodiment includes the following steps:

[0045] Step 1. According to the electrical and mechanical characte...