PURPOSE: To provide a magnetic levitation slider in which a slider can be levitated stably irrespective of the time of no-loading and loading.
CONSTITUTION: A feedback voltages from levitation gap sensors 2a, 2b are compared with a reference voltage from a slider levitation position reference voltage generator 31 by a comparator 32, its differential voltage is amplified by a deviation amplifier 33, and a phase delay of a control system is compensated by a phase compensator 34. Gains are varied at the times of loading and no-loading, levitation electromagnets 1a, 1b power amplified by a power amplifier 35 are driven to reduce the gain at the time of no-loading to decrease dynamic stiffness and to enhance the gain at the time of loading to increase the stiffness, thereby improving stability.