| 摘要 |
An action device comprises first electromagnetic means installed on a first body and defining a first magnetic moment and a magnetic field and second electromagnetic means installed on a second body, distant from the first body, and defining a second magnetic moment able to interact with the magnetic field. It further comprises i) means for varying the first magnetic moment in accordance with a chosen first law of variation to cause the magnetic field to vary in time, ii) means for varying the second magnetic moment in accordance with a second law of variation so that a required force and a required torque are induced on the second body, and iii) calculation means adapted to determine the second law of variation as a function at least of the required force and the required torque and the first law of variation.
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