Patent application number | Description | Published |
20140035494 | MOTOR DRIVING APPARATUS - There is provided a motor driving apparatus capable of optimizing driving efficiency by adjusting a phase difference between current applied to a motor and voltage detected from the motor and performing the adjustment of the phase difference when a pulse width modulation (PWM) signal has a set duty. The motor driving apparatus includes: a driving unit driving a motor according to driving control; a driving controlling unit controlling the driving of the motor by the driving unit, based on an adjusted phase correction signal; and a phase correcting unit correcting a phase difference between a motor detection signal having motor rotation speed information and a current detection signal having detection information regarding current flowing in the motor when a duty of a pulse width modulation (PWM) signal driving the motor satisfies a preset reference duty, and providing the phase correction signal to the driving controlling unit. | 02-06-2014 |
20140035499 | DRIVING APPARATUS HAVING CURRENT DETECTION FUNCTION AND MOTOR DRIVING APPARATUS HAVING CURRENT DETECTION FUNCTION - There are provided a driving apparatus having a current detection function and a motor driving apparatus having a current detection function that are capable of detecting current without a voltage drop by using a dummy transistor connected to a driving transistor in parallel. The driving apparatus includes: a driving unit including at least one transistor connected between a driving power terminal supplying driving power and a ground and switched according to a switching control signal to drive a preset device; and a detecting unit including at least one dummy transistor connected to the at least one transistor in parallel and switched together with the at least one transistor according to the switching control signal to detect current flowing in the at least one dummy transistor. | 02-06-2014 |
20140035688 | OSCILLATOR - There is provided an oscillator providing a clock signal having a uniform duty ratio by generating a toggled voltage by charging and discharging a capacitor with a voltage irrespective of a temperature from a band gap circuit. The oscillator includes: a band gap circuit providing a band gap reference voltage having a pre-set voltage level; a voltage-current conversion unit converting the band gap reference voltage from the band gap circuit into a current; a charging/discharging unit charging/discharging the converted current and providing a triangle wave signal; and a T flip-flop logically operating a pulse signal according to a maximum value of the triangle wave signal from the charging/discharging unit and providing a clock signal having a fixed duty. | 02-06-2014 |
20140062357 | MOTOR DRIVING APPARATUS AND OPERATING METHOD THEREOF - There are a motor driving apparatus and an operating method thereof, the motor driving apparatus including: a speed sensor generating a sensor output signal of a motor; a reference signal generating unit generating a reference signal by using the sensor output signal; a pulse counting unit counting the reference signal during a pulse width period of the sensor output signal to provide a count value; and a glitch controlling unit determining whether a glitch is present or not using the count value to remove a glitch when present. | 03-06-2014 |
20140062374 | MOTOR DRIVING DEVICE AND METHOD OF CONTROLLING THE SAME - There are provided a motor driving device and a method of controlling the same. The motor driving device includes a controlling unit; a plurality of unit circuits provided within the controlling unit and controlling driving of a motor; and a time slice controller provided within the controlling unit and periodically generating a wake-up signal, wherein some unit circuits among the plurality of unit circuits are operated for a certain operation time upon receiving the wake-up signal, thereby allowing for effective power consumption of the motor. | 03-06-2014 |
20140139164 | APPARATUS AND METHOD FOR CONTROLLING MOTOR DRIVING AND MOTOR USING THE SAME - There are provided an apparatus and a method for controlling motor driving and a motor using the same. The motor driving control apparatus according to an embodiment of the present invention includes a driving signal generating unit generating a driving signal for a motor apparatus; a speed detecting unit detecting a rotational speed of the motor apparatus; and a controlling unit monitoring an instantaneous speed and an average speed using the rotational speed and comparing the instantaneous speed with the average speed to determine an occurrence of an abnormal state in the motor apparatus. | 05-22-2014 |
20140145656 | CIRCUIT FOR DETECTING BACK-EMF, MOTOR DRIVING CONTROL APPARATUS AND METHOD USING THE SAME - There are provided a circuit for detecting back-electromotive force, a motor driving control apparatus and method using the same, the motor driving control apparatus including: a comparing unit outputting back-electromotive force of a motor apparatus using a plurality of comparators connected to a plurality of phases of the motor apparatus, respectively; a controlling unit controlling the driving of the motor apparatus using the back-electromotive force; and a comparator driving unit activating at least a portion of the plurality of comparators according to a preset operation scheduling. | 05-29-2014 |
20140152211 | MOTOR DRIVING CONTROL APPARATUS AND METHOD, AND MOTOR USING THE SAME - There are provided a motor driving control apparatus and method, and a motor using the same. The motor driving control apparatus includes: an inverter unit applying a driving current to a motor apparatus according to a driving control signal; a back-electromotive force detecting unit detecting back-electromotive force generated by driving of the motor apparatus; a driving current change unit reflecting a level of the back-electromotive force to determine a resistance value and reflecting the resistance value in the driving current; and a controlling unit performing a control operation to change the driving control signal using the driving current in which the resistance value is reflected and the back-electromotive force. | 06-05-2014 |
20140159629 | MOTOR DRIVING CONTROL APPARATUS AND METHOD, AND MOTOR USING THE SAME - There are provided a motor driving control apparatus and method, and a motor using the same, the motor driving apparatus including a driving signal generating unit generating a driving control signal for controlling the driving of a motor apparatus, a speed detecting unit detecting a rotation speed of the motor apparatus, and a frequency determining unit controlling the driving signal generating unit to vary a frequency of the driving control signal according to the rotation speed. | 06-12-2014 |
20140167667 | MOTOR DRIVING APPARATUS AND METHOD - There are provided a motor driving apparatus and method, the motor driving apparatus including a current detecting unit detecting a level of a driving current applied to a motor for each predetermined period, a current comparing unit comparing the level of the driving current detected by the current detecting unit in a previous period and the level of the driving current detected by the current detecting unit in a current period, and a controlling unit adjusting a level of a reference signal compared with a back electro motive force (BEMF) signal of the motor based on an output of the current comparing unit. | 06-19-2014 |
20140167668 | MOTOR DRIVING CONTROL APPARATUS, MOTOR DRIVING CONTROL METHOD, AND MOTOR USING THE SAME - There are provided a motor driving control apparatus, a motor driving control method, and a motor using the same. The motor driving control apparatus includes a driving signal generation unit, a back electromotive force detection unit, and a frequency controller. The driving signal generation unit may generate a driving control signal for controlling driving of a motor device. The back electromotive force detection unit may detect back electromotive force of the motor device. The frequency controller may provide control to estimate a zero crossing point of the back electromotive force, set a frequency modulation section including the zero crossing point, and modulate a frequency of the driving control signal during the frequency modulation section. | 06-19-2014 |
20140176035 | MOTOR DRIVING CONTROL APPARATUS, MOTOR DRIVING CONTROL METHOD, AND MOTOR USING THE SAME - There are provided a motor driving control apparatus, a motor driving control method, and a motor using the same. The motor driving control apparatus includes a controller, a duty ratio calculation unit, and a driving signal generation unit. The controller generates a speed control signal by using at least one of a speed signal of a motor device and a speed command signal input from the outside. The duty ratio calculation unit calculates a duty ratio of the speed control signal. The driving signal generation unit generates a driving control signal for controlling driving of the motor device by using the duty ratio. | 06-26-2014 |