Transport device

A transport device that transports an object to be transported provided with a magnetic body, the transport device comprising:

• a plurality of coils configured to generate a thrust for transporting the object to be transported;
• and
• a processor configured to:
• apply a pulsed voltage to each of the plurality of coils, and
• when switching a coil to be energized, determine a width of the pulsed voltage such that a speed or an acceleration of the object to be transported is stabilized based on a position of the object to be transported and a time at which the object to be transported passes through the position or a current flowing through an energized coil in a predetermined period before switching the coil to be energized, and outputs the determined width,
• wherein the width of the pulsed voltage is determined based on the speed or the acceleration of the object to be transported, the current flowing through the coil, or a time for the object to be transported to pass between two predetermined positions during the predetermined period before switching the coil to be energized.

A transport device that transports an object to be transported provided with a magnetic body, the transport device comprising:

• a plurality of coils configured to generate a thrust for transporting the object to be transported;
• a transport surface;
• and
• a processor configured to:
• apply a pulsed voltage to each of the plurality of coils,
• when switching a coil to be energized, determine a width of the pulsed voltage such that a speed or an acceleration of the object to be transported is stabilized based on a position of the object to be transported and a time at which the object to be transported passes through the position or a current flowing through an energized coil in a predetermined period before switching the coil to be energized, and outputs the determined width, and
• store data of a time change rate of the current or inductance of the coil on the transport surface, the data being determined based on a positional relationship between the magnetic body and the coil, and estimates the position of the object to be transported using a measured value of the current flowing through the coil.