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Improved permanent magnet synchronous motor chaos synchronization control method

A technology of permanent magnet synchronous motor and chaotic synchronization, which is applied in the direction of speed/torque control of multiple motors, and can solve the problem of not designing a controller.

Active Publication Date: 2019-09-20
QILU UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Furthermore, there is another problem, that is, many studies on chaotic synchronous controllers only consider the robustness of the overall synchronization of the system, and do not design the controller from the concept of limited time.

Method used

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  • Improved permanent magnet synchronous motor chaos synchronization control method
  • Improved permanent magnet synchronous motor chaos synchronization control method
  • Improved permanent magnet synchronous motor chaos synchronization control method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0054] The improved chaotic synchronous control method for permanent magnet synchronous motors involved in this embodiment specifically includes the following steps:

[0055] Step 1: Establish a PMSM chaotic mathematical model, as shown below

[0056]

[0057] The meanings of each parameter in the formula are: i d with i q is the direct-axis and quadrature-axis components of the stator current vector, ω is the angular frequency of the rotor, T l is the external torque, J is the moment of inertia, β is the viscous damping coefficient, R 1 is the stator winding, L d with L q is the d, q axis stator inductance, n p is the number of pole pairs of the motor, is the permanent magnetic flux, u d with u q are the direct and quadrature components of the stator voltage vector.

[0058] Continuing processing of (1) has:

[0059]

[0060] Furthermore, only the uniform air gap is considered here:

[0061]

[0062]

[0063] where x 1 、x 2 、x 3 is the state variabl...

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Abstract

The invention belongs to the technical field of a permanent magnet synchronous motor and specifically relates to an improved permanent magnet synchronous motor chaos synchronization control method. The method is characterized by, to begin with, giving a PMSM chaos mathematical model and analyzing chaos behaviors of a system; then, based on the Lyapunov stability theory and the active control principle, designing a finite time state feedback controller of the system; and realizing finite time chaos synchronization of a permanent magnet synchronous motor through a drive-response synchronization method. A new adjustable parameter and fractional order power are introduced into the controller, thereby realizing finite time chaos synchronization of the permanent magnet synchronous motor, and greatly improving error system control capability without increasing system expense.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet synchronous motors, and in particular relates to an improved chaotic synchronous control method for permanent magnet synchronous motors. Synchronization is gradually achieved under the action of . Background technique [0002] In 1990, scholars Pecora and Carroll of the U.S. Naval Laboratory proposed a chaos synchronization control method, and first realized chaos synchronization in electronic circuits. What is chaos synchronization? In short, it is to control the chaotic system so that its trajectory gradually approaches Another chaotic system trajectory. With the development of electronic power technology and engineering control technology, chaos phenomenon has been widely found in servo systems such as permanent magnet synchronous motor PMSM, brushless DC motor, and switched reluctance motor in subsequent studies, which has aroused the attention of many scholars at home and abroad. R...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/04
CPCH02P6/04
Inventor 张芳芳刘加勋舒明雷黄明明孙凯马凤英冷森
Owner QILU UNIV OF TECH
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