Patent application number | Description | Published |
20100148746 | BALANCED BRIDGE ELECTRIC GEAR-SHIFTING MECHANISM - A balanced bridge electric gear-shifting mechanism comprises a signal input stage, a balanced bridge circuit and a signal output stage. The mechanism, by means of inputting different up and down gear signals to enact an analog gear-shifting apparatus to generate different voltage potentials, effectively improves the drawbacks of wrong gear shifting induced by a conventional digital gear shifting apparatus for wrongly touching the up and down shifting gear, so as to reduce the gear-shifting duration, enhance the gear-shifting smoothness, and enhance the system reliability and stability. | 06-17-2010 |
20110198144 | ELECTRIC BICYCLE AND MOTOR THEREOF - An electric bicycle includes a frame having at least one supporting member, at least one wheel having a shaft fixed to the supporting member and a hub rotatable about the shaft, and at least one slim motor having a rotor coupled to the hub and rotating about an axis aligned with the shaft, wherein the slim motor drives the hub to rotate about the shaft. | 08-18-2011 |
20110273050 | ADJUSTABLE AXIAL-FLUX DISC MOTOR - An adjustable axial-flux disc motor, that is used in a flat space formed at a side or at the center of a wheel center for driving the wheel to rotate. The motor is activated to perform a rotation movement by the interactions of an electromagnetic field formed from the passing of an electric current through the armatures of its stator and a magnetic field resulting from the permanent magnet of its rotator. Moreover, there is a circular air gap sandwiched between the stator base and the rotator base, and the permanent magnet is further surrounded by coils. By adjusting the excitation current of the coils, the magnetic flux intensity can be modulated accordingly, and as the air gap magnetic flux is varied with the relative positioning of the stator and the rotator, the output characteristic of the motor will be varied accordingly. | 11-10-2011 |
20120086303 | REINFORCEMENT STRUCTURE FOR DISC MOTOR - A reinforcement structure for a disc motor being received in the flat space formed at a side of a wheel center for driving the wheel to rotate as it can be activated to perform a rotation movement by the interactions of an electromagnetic field formed from its stators and a magnetic field resulting from its rotator, comprises: a rib structure, arranged inside a shell housing the disc-like stator for enhancing the structure integrity thereof without causing the thickness thereof to increase and thus maximizing the usefulness of the motor's limited space; and a fixing element, for fixing the stators to the inner side of the motor's outer shell for preventing the stators to be deformed by the magnetic force from the permanent magnets mounted on the rotors while preventing the stators from being attracted by the permanent magnets of the rotors, and thus enabling the motor to operate smoothly. | 04-12-2012 |
20120126653 | AXIAL-FLUX THIN-PLATE MOTOR - An axial-flux thin-plate motor is disclosed, which includes: a stator formed of an annular disk of silicon steel and comprising a plurality of teeth formed on one side of the annular disk, a plurality of insulation sleeves, each insulation sleeve having a shape which matches each tooth, and a plurality of coils, each coil formed around outside of each insulation sleeve, the coils connected and grouped to form n-phase windings in accordance with a phase number n of the motor; and a rotor formed of a ferromagnetic disk with a plurality of permanent magnets embedded on one side of the ferromagnetic disk. | 05-24-2012 |
20120256575 | CONTROL METHOD FOR SENSORLESS MOTORS WITH ENERGY RECOVERY ABILITY - The present disclosure related to a control method for a sensorless motor with energy recovery ability, using which duty cycle of a sensorless motor can be changed by the control of complementary switches so as to enable the sensorless motor to switch between a high efficiency driving operation and an energy recovery operation while being activated. Thereby, the conduction loss and the wear and tear to the switches can be minimized while simultaneously enhancing the energy recovery efficiency and thus improving the battery life. | 10-11-2012 |
20140167872 | MODULATION METHOD AND CONTROL DEVICE HAVING THE SAME - A modulation method is provided. The modulation method includes steps of: receiving multiple sinusoidal signals; obtaining a maximum value, a median value and a minimum value of the sinusoidal signals within a period to generate a first difference between the maximum value and the minimum value; generating a second difference according to an upper limit and a lower limit of a predetermined comparison value; and comparing the first difference with the second difference to generate an optimized modulation signal. | 06-19-2014 |
20150162855 | OUTPUT CONTROL APPARATUS OF A MOTOR AND METHOD FOR CONTROLLING A CONTROLLER OF THE SAME - An output control apparatus of a motor includes a controller formed by having a power device to bridge a motor and a power supply. The controller incorporating the power device provides voltage control modulation during different motor speeds so as to fix the recharging voltage at the DC bus in a specific range without involvement of any voltage converter. It is unnecessary to use additional complex circuits or other DC/DC converters to reduce the voltage recharged from the motor running at a high speed. In addition, space for the apparatus is reduced, and the specification and function of the original controller can be maintained without trading off work in redesigning the motor system. | 06-11-2015 |