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A servo system variable inertia control method and device

A technology of servo system and control method, applied in the field of variable inertia control of servo system, to achieve the effects of compact structure, sudden change of inertia and gradual change of inertia

Active Publication Date: 2018-04-17
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method can change the moment of inertia of the servo system, it can only realize sudden addition and unloading of the inertia, which is not quite consistent with the dynamic time-varying moment of inertia in practical applications.

Method used

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  • A servo system variable inertia control method and device
  • A servo system variable inertia control method and device
  • A servo system variable inertia control method and device

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Embodiment Construction

[0033] In order to further illustrate the technical solutions adopted by the present invention, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is only suitable for illustrating and explaining the present invention, and does not constitute a limitation to the protection scope of the present invention.

[0034] Such as figure 1 As shown, a servo system variable inertia device of the present invention includes a base 1, a lifting platform 2, a motor fixing device 3, a permanent magnet synchronous motor 4, a torque sensor 5, a magnetic powder clutch 6, an absolute photoelectric encoder 7, Slider crank mechanism 8, drag table 9, pre-tightening bolt 10 and fastening nut 11. The lifting platform 2 is movably arranged on the column of the base 1, and its position is adjusted by fastening nuts 11; the motor fixing device 3 is connected with the lifting platform 2 through pre-...

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Abstract

The invention discloses a variable inertia control method and device for a servo system. The device comprises a base, a lifting platform, a motor fixing device, a permanent magnet synchronous motor, a torque sensor, a magnetic powder clutch, an absolute optical encoder, a crank-slider mechanism, a drag platform, pre-tightening bolts and clamp nuts. Through controlling the magnetizing current of a magnetic powder clutch to control disengagement and engagement of the crank-slider mechanism and the permanent magnet synchronous motor and utilizing the absolute optical encoder to measure a position angle of the crank-slider mechanism, the equivalent moment of inertia of a system is computed. According to the method and the device, the inertia mutation and the inertia gradual change of the servo system are both realized.

Description

【Technical field】 [0001] The invention belongs to the technical field of electromechanical control, and in particular relates to a variable inertia control method and device of a servo system. 【Background technique】 [0002] Permanent magnet synchronous motors have many advantages such as small size, high efficiency, large electromagnetic torque, and convenient control. They have been widely used in high-performance, high-precision control occasions, such as CNC machine tools, industrial robots, aerospace and other fields. High-performance servo systems have high requirements on the speed dynamic performance of permanent magnet synchronous motors. During the actual operation of the motor, the change of the moment of inertia of the load will change the mathematical model of the control object, thereby affecting the dynamic performance of the servo system and reducing the servo characteristics of the entire system. In order to improve the control performance of the servo syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P23/00H02K7/10H02K49/06H02K11/24
CPCH02K7/10H02K49/06
Inventor 梅雪松宋哲姜歌东许睦旬林英行齐太安孙书川
Owner XI AN JIAOTONG UNIV