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l2 sliding mode control method of permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and control method, which is applied in the direction of motor generator control, electronic commutation motor control, motor, etc., can solve the problems of limited self-adaptive ability, low control precision, and no determination method, etc. Stickiness, good robustness, convenient effect

Active Publication Date: 2022-07-08
CHONGQING QIULONG TECH CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

However, the control precision of fuzzy control is not high, the adaptive ability is limited, and at the same time, it is easy to produce oscillation phenomenon. In practice, there is no definite method to find a reasonable fuzzy approximator.

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  • l2 sliding mode control method of permanent magnet synchronous motor
  • l2 sliding mode control method of permanent magnet synchronous motor
  • l2 sliding mode control method of permanent magnet synchronous motor

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Embodiment Construction

[0068] like figure 1 , figure 2 and Figure 4 As shown, the L2 sliding mode control method of the permanent magnet synchronous motor of the present invention includes the following steps:

[0069] Step 1. Obtaining the feedback position: the position sensor 2 periodically detects the position of the permanent magnet synchronous motor, obtains the feedback position at multiple times, and transmits it to the processor 1;

[0070] Step 2: Obtaining the position error: the processor 1 calculates the difference between the feedback position and the given position to obtain the position error e; and calculates the derivative e' of the position error;

[0071] Step 3. Obtaining the given current of the q-axis: The processor 1 calls the L2 synovial controller module, according to the position error e and the derivative e' of the position error, and according to the formula:

[0072]

[0073] Calculate the given current of the q-axis Among them, p is the pole pair number of th...

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Abstract

The invention discloses an L2 sliding mode control method of a permanent magnet synchronous motor, comprising the steps of: 1. obtaining a feedback position; 2. obtaining a position error; 3. obtaining a q-axis given current; 4. obtaining a d-axis current and The acquisition of the q-axis current; the acquisition of the α-axis voltage and the β-axis voltage; the sixth, the SVPWM control of the permanent magnet synchronous motor. The method of the invention is simple in steps, convenient in implementation, good in position tracking effect, fast in response speed, strong in anti-interference ability, good in robustness, strong in practicability, good in use effect, and convenient for popularization and use.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet synchronous motor control, and in particular relates to an L2 sliding mode control method of a permanent magnet synchronous motor. Background technique [0002] Permanent magnet synchronous motor (PMSM) has the advantages of high power density, high efficiency, small size and reliable operation. It is a speed-regulating motor with good control performance. When the permanent magnet synchronous motor is disturbed, the motor control system needs to be able to effectively track the given position and suppress the disturbance. Especially in some places with high position requirements, it is particularly important. Therefore, how to suppress the disturbance of the permanent magnet synchronous motor and realize the position tracking has become a research hotspot in the field of permanent magnet synchronous motor research. [0003] In the prior art, the most widely used position control method ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00
CPCH02P21/0007Y02T10/64
Inventor 程勇彭超洋
Owner CHONGQING QIULONG TECH CO LTD