Magnetic suspension guiding direct-driven transportation system and control method thereof

Abstract

A magnetic suspension guiding direct-driven transportation system comprises at least one set of double-sided hybrid excitation linear motor. Each set of the double-sided hybrid excitation linear motor is provided with an electromagnetic drive guiding device used for adjusting an air gap between a double-sided stator and a rotor, the electromagnetic drive guiding device comprises a deviator acquisition circuit, a winding current detection circuit, an air gap adjusting unit and a driving control unit, and controls the air gap adjusting unit according to obtained offset and exciting current value, and therefore the air gap adjusting unit satisfies following conditions that the arithmetic product of each DC exciting current value and the number of turns of excitation coils, namely the excitation magnetic potential is identical or approximately identical, due to the directions of two exciting currents and the winding directions of coils, when the excitation field and the normal force at one side are enhanced, the excitation field and the normal force at the other side are decreased, and the total electromagnetic force is identical or approximately identical before and after the exciting currents are introduced. By employing the scheme provided by the invention, the left and right, and back and forth postures of the rotor are adjusted dynamically in balance, and the rotor can operate in a contactless manner.

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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