5.4 Guidance forces of the HTS Maglev vehicle Ë 127Fig. 5.9:Photo of upgraded SCML-
01 HTS Maglev measurement
system [28].functions, i.e. a two-dimension motion mechanism and a three-dimension motion
mechanism. Thus, this system can accurately locate and simultaneously measure
both levitation force and guidance force, as well as both levitation force and torque.
The improved SCML-01 system has augmented new functions:
(1) Measured HTSCs specimens can be moved with the combination of any two
dimension directions of three dimension directions to operate in circular, slant,
and z-type movements.
(2) Measurements of displacement, temperature, levitation force, torque at the same
time.
(3) Measurements of levitation force and guidance force simultaneously.
(4) Measurements of relaxation time of levitation force and guidance force
simultaneously.
(5) Measurements of relaxation time of the torque.
The measurement precisions are calibrated experimentally and the augmented new
functions are verified. These results show that the development of the system is
completely successful.
5.4 Guidance forces of the HTS Maglev vehicle [29–31]
The guidance force defines the lateral stability of the Maglev vehicle when either at
rest or moving. The lateral guidance force is dependent on the trapped flux in the bulk
superconductors, so the larger the amount of trapped flux, the stronger the guidance
force. This is a distinctive characteristic of the bulk HTS Maglev vehicle. This sort
of Maglev vehicle with bulk HTS does not need any lateral stability control systems,
which makes it superior to other conventional Maglev vehicle systems. The guidance