Patent ID: 6825580
Filing Date: 2004-11-30
Classification: H02K

Abstract:
An apparatus for controlling cooling of a gantry having at least one linear motor, comprising:at least one stator comprising a first temperature sensor, a heat sink, and a cooling fan at predetermined portions of the at least one stator; at least one mover comprising a second temperature sensor and a heat sink installed on an upper surface of the at least one mover; an encoder configured to sense at least one of a position and velocity of the at least one mover; an encoder periphery sensor attached proximate to the encoder and configured to measure at least one of a surrounding temperature, humidity, or pressure; an A/D converter configured to receive a surrounding environment signal corresponding to at least one of a surrounding temperature, humidity, and pressure from the encoder periphery sensor, a position and velocity signal from the encoder and a first temperature signal and a second temperature signal from the first and second temperature sensors and to convert the surrounding environment signal, the position and velocity signal, and the first and second temperature signals from analog signals to digital signals and output the digital signals; at least one mover driver configured to provide a drive signal to a coil block attached to the mover; a controller configured to control a drive signal output from the at least one mover driver to control the velocity of the at least one linear motor and to receive the digital signals output by the A/D converter and output at least one of a cooling fan control digital signal and an air valve control digital signal; and a D/A converter configured to receive from the controller and to convert at least one of the cooling fan control digital signal and the air valve control digital signal to an analog drive signal and output the analog drive signal to at least one of a cooling fan and an air valve.