Traction-guide decoupling control method for bilateral hollow linear synchronous motor

Abstract

The invention discloses a traction-guide decoupling control method for a bilateral hollow-core linear synchronous motor. The method comprises the following steps: acquiring an expected speed value, an expected rotor offset value, speed values output by motors and rotor offset values; acquiring a first q-axis voltage and a second q-axis voltage of motor windings at the two sides according to the expected speed value, the speed values output by the motors and a pre-established motor electromagnetic force model; acquiring a first d-axis voltage and a second d-axis voltage of the motor windings at the two sides according to the expected rotor offset value, the rotor offset values output by the motors and a preset guide control equation; and acquiring the three-phase voltage of the motor at one side through conversion according to the first q-axis voltage and the first d-axis voltage, acquiring the three-phase voltage of the motor at the other side through conversion according to the second q-axis voltage and the second d-axis voltage, and conducting traction-guide decoupling control over the motors according to the three-phase voltage of the motor on one side and the three-phase voltage of the motor on the other side. Thus, independent control of traction and guiding of the motors is realized.

Description

technical field [0001] The invention relates to the field of motors, in particular to a traction-guide decoupling control method for a double-sided air-core linear synchronous motor. Background technique [0002] With the continuous development of maglev transportation technology, linear motors are used as the traction system of maglev transportation, and the problem of motor guidance in the levitation state has become a very critical technical issue. 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 levitation guide electromagnets are used in medium and low-speed maglev traffic. 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 inductio...

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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