Device and method for online distinguishing parameters of servo system of permanent-magnet synchronous motor

A technology of permanent magnet synchronous motor and motor parameters, which is applied to control electromechanical transmission devices, control systems, and control generators, etc., to achieve the effects of clear principle, simple structure, and low manufacturing and operating costs.

Active Publication Date: 2011-10-19
浙江布科伺服科技有限公司
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  • Device and method for online distinguishing parameters of servo system of permanent-magnet synchronous motor
  • Device and method for online distinguishing parameters of servo system of permanent-magnet synchronous motor
  • Device and method for online distinguishing parameters of servo system of permanent-magnet synchronous motor

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Embodiment 1

[0057] see Figure 4 , this embodiment 1 and figure 1 The difference between the vector control of the permanent magnet synchronous motor servo system shown is that in this embodiment, the online parameter identification device of the present invention is used to continuously refresh the motor parameters used in the decoupling controller 5, so as to achieve the best Decoupled control effects.

Embodiment 2

[0059] see Figure 5 , the difference between this embodiment 2 and embodiment 1 is that in this embodiment, the rotation speed and angle observer 18 is used to replace Figure 4 Angular velocity and angular position sensor 13 and position and velocity signal processing unit 14 (known technology) in. In this embodiment, the online parameter identification device of the present invention is used to continuously refresh the motor parameters used in the decoupling controller 5 and the speed and angle observer 18, so as to achieve the best speed observation, angle observation and decoupling The effect of control.

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Abstract

The invention provides a device and a method for online distinguishing parameters of a servo system of a permanent-magnet synchronous motor, wherein the device comprises a parameter distinguishing startup/shutdown unit, a parameter online distinguishing unit, a parameter memorizing unit, a fundamental frequency component extracting unit and a three-phase alternating-current/d-q coordinates converting unit. The method comprises the following steps of extracting the fundamental frequency components of all signals out of the voltage signals measured by the three-phase power supply of the motor and the current signals in a three-phase winding of the motor; processing the fundamental frequency components by the three-phase alternating-current/d-q coordinates converting unit; sending the fundamental frequency components and the electric angular speed signals of the motor to the parameter online distinguishing unit; carrying out the motor parameter distinguishing and outputting the distinguished results by the parameter online distinguishing unit under the control of the parameter distinguishing startup/shutdown unit; and simultaneously memorizing the distinguished results in the parameter memorizing unit. In the invention, the exact motor parameter online distinguishing estimation value can be provided for the high-quality vector controlling; and the disadvantageous influences of the parameters change of the permanent-magnet synchronous motor on the vector controlling during the running can be overcome.

Description

Technical field: [0001] The invention relates to the technical field of vector control of permanent magnet synchronous motors, and also relates to the technology of online determination of parameters of permanent magnet synchronous motors, in particular to a device and method for online identification of parameters of permanent magnet synchronous motor servo systems. Background technique: [0002] With the increasing demand for automation in various industries, the application of servo systems with mechanical parameters as the control object is also becoming more and more extensive. The permanent magnet synchronous motor in the servo system has attracted people's attention due to its simple structure, small size, light weight, low loss, and high efficiency, and has been widely used in industrial and agricultural production, national defense, and daily life. . [0003] The core of the permanent magnet synchronous motor servo system is the fast and dynamic control of the elec...

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Application Information

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IPC IPC(8): H02P21/14H02P21/18
Inventor 孔繁金李庆松
Owner 浙江布科伺服科技有限公司
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