A traction-steering decoupling control method for a bilateral hollow-core linear synchronous motor

Abstract

The invention discloses a traction-guidance decoupling control method for a bilateral hollow-core linear synchronous motor. The method includes the following steps: obtaining an expected speed value, an expected value of a mover offset, a speed value output by the motor and the value of the mover offset; The expected speed value, the speed value output by the motor and the pre-established motor electromagnetic force model, the first q-axis voltage and the second q-axis voltage of the motor windings on both sides are obtained; according to the expected value of the mover offset, the mover offset output by the motor The first d-axis voltage and the second d-axis voltage of the motor windings on both sides are obtained according to the magnitude and the preset steering control equation; According to the second q-axis voltage and the second d-axis voltage, the three-phase voltage of the motor on the other side is obtained, and the traction-guidance decoupling control of the motor is realized according to the three-phase voltage of the motor on one side and the three-phase voltage of the motor on the other side. . Realize independent control of motor traction and guidance.

Description

technical field [0001] The invention relates to the field of motors, in particular to a traction-guidance decoupling control method for a bilateral hollow-core linear synchronous motor. Background technique [0002] With the continuous development of maglev transportation technology, the linear motor is used as the traction system of maglev transportation, and the problem of motor guidance in the suspended state has become a very critical technical problem. In general industrial applications, motor guidance is generally realized by mechanical limit structures or other auxiliary structures. For example, mechanical limit structures are used in industrial machine tools, and suspension guide electromagnets are used in medium and low-speed maglev traffic. With the continuous increase of the speed of maglev traffic trains, the air-core linear motor must be guided by a non-contact electromagnetic guiding method in the electric suspension mode. The existing zero-flux coil and metal ...

AI Technical Summary

Problems solved by technology

With the continuous acceleration of maglev traffic trains, the guidance of air-core linear motors in the electric levitation mode must adopt a non-contact electromagnetic guidance method. The existing zero-flux coil and metal induction plate guidance methods are passive guidance methods. The ability to actively adjust the characteristics of the steering system, resulting in the inefficiency of existing traction steering decoupling controls

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