Browsing by Author "HU Jwu-Sheng"

Now showing 1 - 4 of 4

CLEANING APPARATUS FOR INKJET PRINT HEAD
(2015-07-30)
HU Jwu-Sheng
;
JAO Hsien-Tang
In the present invention, an inkjet printing head cleaning device is provided, through droplet image information and feedback control technology in order to drive the nozzle without ejecting, the micro clogging technique is able to avoid the nozzle crimp and reduce the material cost.
CONTROLLER APPARATUS FOR CONTROLLING A MULTIPHASE MULTILEVEL VOLTAGE SOURCE INVERTER AND A METHOD THEREOF
(2012-01-05)
HU Jwu-Sheng
;
CHEN Keng-Yuan
;
TANG Chi-Him
The present invention provides an apparatus for controlling a multiphase multilevel voltage source inverter. The apparatus includes a signal-generating unit and a converter. The signal-generating unit responds to an input signal to produce a switching strategy control signal and a duration timing control signal corresponding to the switching strategy control signal. The converting unit responds to the switching strategy control signal and the duration timing control signal to produce a switching signal. The voltage source inverter responds to the switching signal to generate a multiphase-and-multilevel AC voltage output.
MOTOR GENERATOR
(2015-07-09)
HU Jwu-Sheng
;
SHEN Te-Yang
The present invention provides a motor generator, and the motor generator comprises a permeability structure, a bearing, a hollow rotating shaft, a ringed clip and a rotatable guiding structure. The permeability structure comprises a primary permeability unit and a secondary permeability unit wherein the second permeability unit is stacked with the first permeability unit along an axial air-gap to form a symmetrical structure having a hollow shaft. The bearing is disposed inside the hollow shaft of the permeability structure. The hollow rotating shaft is passed through the hollow shaft of the permeability structure and disposed at another side of the bearing with respect to the permeability structure. The ringed clip is used for fixing the bearing and the hollow rotating shaft. The rotatable guiding structure is disposed inside the hollow rotating shaft for providing power source and transmitting signals.
Switching driving method used for a driving system
(2014-05-08)
HU Jwu-Sheng
;
JAO Hsien-Tang
The present invention discloses a switching driving method used for a driving system. The driving system transforms any type of waveforms to switching signal array by switching strategy modulation, and transmits to switching circuit. Any type of driving waveforms can be generated through high-speed switching the switching circuit. The waveforms can be generated by operating the switching circuit with the switching strategy. The losses of the switch can be reduced, and the modulation ability of driving signal having several waveforms and multi-channels can be improved.