Design of Guidance System for Superconducting Maglev Vehicle Using Propulsion Coils

Abstract

The superconducting magnetically levitated vehicle has guidance coils that produce vehicle guidance forces according to a null flux principle. However, the expected forces don't have significand tamping forces to suppressa lateral vibration of the vehicle. Event hought he experimentasly stemh as some magnitude of damping, it is still small. Moreovers, incet he guidance forces are very weak at low speeds, the minimumle vitatings peedis limited. The paper proposes a guidance method using LSM armaturec oil currents. When the currents are decomposed in to dq frame variables so that the d-axisi s assigned to the iled axis, the d-axisc omponenotf currentsg eneratest he lateral forces. The lateral forces of the vehicle are formulated, and the guidance force coefficienits defined. And the authors hows the design formula of the guidance regulator system that employsa dynamicc ompensatours inga feedback signal of lateral displacement. the calculatedre sultss how that the guidance regulator system works very well as we specify. © 2000, The Institute of Electrical Engineers of Japan. All rights reserved.