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Self-adaptive integral backstepping control method for load disturbance resistance of PMSM for elevator

A backstepping control and self-adaptive technology, applied in the direction of motor control, motor generator control, AC motor control, etc., can solve problems such as poor effect, achieve the effect of reducing influence, reducing disturbance, and improving tracking accuracy

Active Publication Date: 2018-07-20
NANJING UNIV OF SCI & TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

Therefore, although the PI control algorithm is simple, it is not effective in a high-precision control system like a motor.

Method used

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  • Self-adaptive integral backstepping control method for load disturbance resistance of PMSM for elevator
  • Self-adaptive integral backstepping control method for load disturbance resistance of PMSM for elevator
  • Self-adaptive integral backstepping control method for load disturbance resistance of PMSM for elevator

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Embodiment Construction

[0030] It is easy to understand that, according to the technical solution of the present invention, without changing the essence of the present invention, those skilled in the art can imagine a variety of adaptive integral backstepping control methods of the PMSM anti-load disturbance for elevators of the present invention. implementation. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or limitation on the technical solution of the present invention.

[0031] combine Figure 1-3 , the elevator uses the adaptive integral backstepping control method of PMSM anti-load disturbance, applies torque observer and adaptive backstepping integral control to the vector control system based on SVPWM (voltage space vector), and its working process includes the following steps:

[0032] Step 1, establish a perm...

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Abstract

The invention provides a self-adaptive integral backstepping control method for load disturbance resistance of a PMSM for an elevator. Motor speed w is compared with given motor speed w* to obtain a rotation speed error e; load torque [tau]L is estimated according to motor speed w that is fed back and electromagnetic torque Te; the estimated load torque [tau]L and a rotation speed error e are input to a self-adaptive integral backstepping controller to be adjusted, a steady-state error of speed is eliminated to obtain a virtual control quantity i<q><*> of a q axis of a stator current in a rotating coordinate system d-q, an exciting current component i<d><*> is used as a reference value to be input to a current loop, and subtraction operation is performed on the reference value and a statorcurrent i<d> after coordinate transformation to obtain a d axis stator current error e<d>; control voltages u<d> and u<q> are calculated according to a q axis stator current error e<q> and a d axis stator current error e<d>; and u<d> and u<q> are subjected to park inversion and are input to an SVPWM pulse width modulation module to generate a pulse signal required for driving an inverter, therebydriving the motor to run. The self-adaptive integral backstepping control method for load disturbance resistance of a PMSM for an elevator improves robustness of an elevator electric system, and enhances comfort and rapidness of the elevator.

Description

technical field [0001] The invention belongs to the technical field of motor intelligent control, in particular to an adaptive integral backstepping control method for PMSM used in elevators to resist load disturbance. Background technique [0002] Elevators are a common means of transportation in buildings. With the development of the times, people put forward higher requirements for the high speed, stability and energy saving of elevators. Due to the advantages of simple structure, reliable operation, small size and high efficiency, the permanent magnet synchronous motor (PMSM) is widely used in the elevator speed control system. The ever-changing complex application environment requires continuous optimization and updating of the control strategy of the elevator electric system. [0003] In the elevator traction speed regulation system, the PI controller is often used to regulate the system speed. Although the controller is more convenient to use, it is still a linear ...

Claims

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Application Information

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IPC IPC(8): H02P21/20H02P21/22H02P21/13H02P25/024H02P27/06
CPCH02P21/0017H02P21/13H02P27/06H02P2205/05H02P21/20H02P21/22H02P25/024
Inventor 郭健沈宏丽曹阳樊卫华王天野薛舒严龚勋
Owner NANJING UNIV OF SCI & TECH
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