Maglev-guided direct-drive transport system and control method thereof

Abstract

A magnetic levitation guided direct-drive transportation system, which includes at least one set of bilateral hybrid excitation linear motors, each set of bilateral hybrid excitation linear motors is provided with an electromagnetic drive guide device for adjusting the air gap between the bilateral stator and the mover , the electromagnetic drive guiding device includes: an offset acquisition circuit, a winding current detection circuit, an air gap adjustment unit and a drive control unit, which controls the air gap adjustment unit according to the obtained offset and excitation current value, so that the air The gap adjustment unit meets the following conditions: the product of the DC excitation current and the number of turns of the excitation coil passed into the group of air gap adjustment units, that is, the excitation magnetic potential is equal or approximately equal, and the direction of the two excitation currents and the winding direction of the coil make one side excited While the magnetic field and normal force are enhanced, the other side is weakened, and the total electromagnetic thrust is the same or approximately the same as before the excitation current is cut off. By adopting the scheme provided by the present invention, the left-right and front-back attitudes of the mover are dynamically balanced to achieve non-contact operation.

Description

technical field [0001] The invention relates to a linear motor magnetic suspension positioning and guiding control method and device. Background technique [0002] With the development of social economy, people are building more and more high-rise and super high-rise buildings. For example, the Burj Khalifa in the United Arab Emirates is 828 meters high and has 162 floors; the Mecca Royal Clock Tower Hotel in the Kingdom of Saudi Arabia is 601 meters high. , a total of 95 floors; the Shanghai Tower is 632 meters high, with a total of 125 floors; Taipei 101 Financial Center is 509 meters high, with a total of 106 floors; the Petronas Twin Towers in the capital of Malaysia is 457 meters high, with a total of 88 floors. Several other skyscrapers are currently in the planning and construction stages. With the continuous increase of floor height, high-speed elevators need to be equipped. The traditional wire rope traction hoisting system is no longer sufficient: due to the exist...

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Problems solved by technology

Patent application publication number CN102689830A, "Magnetic Levitation Elevator Guide System and Its Control Method" and other patents, discloses a non-contact magnetic levitation guide device and elevator system using U-shaped electromagnets. The guide device is used to maintain the state of the car. Although it realizes non-contact guiding operation, it needs to arrange additional electromagnet devices and magnetic guide rails. The number of electromagnets and magnetic guide rails is large, and it takes up a lot of space. The linear motor cannot be fully utilized. Electromagnetic guidance potential of the power source itself

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