A method of driving a brushless DC motorPROBLEM TO BE SOLVED: To simplify handling and to switch energizing states with proper timing.阿部 秀文永沼 司菅原 貴治
At first, a plurality of detection modes are applied in sequence to a brushless DC motor, such that with respect to each of the detection modes a composite magnetic field generated by a motor current flowing through motor coils points in a different direction. Then, each of peak values of ...
I Yutaka,A Shigetoshi 摘要: PURPOSE: To obtain a method for driving a DC brushless motor in motor vehicle in which the armature coil and the components of driving circuit can be protected against burning due to overload operation. CONSTITUTION: Temperature sensors 47, 46 detect the temperature...
CONTROL DEVICE FOR DRIVING A BRUSHLESS DC MOTOR A delta type inverter is used in conjunction with a closed-loop motor controller to provide a control device for driving a three phase brushless direct current motor. The delta inverter has one-half of the solid state switching devices a... AM...
the thermal damage of a driving power transistor and the thermal insulation damage of stator winding for the brushless DC motor by detecting the commutation period of the motor and detecting the lock of the motor at commutating point, thereby stopping the supply of the power to the motor. CONS...
A device for driving a brushless motor (3) that comprises a DC power supply (1), a semiconductor switching element group (2) which applies/cuts currents to armature windings (4) of the brushless motor (3), plural filter circuits (6) which shapes the waveforms of the voltages induced in ...
摘要: PURPOSE: To provide a driver for a brushless DC motor in which an optimum efficiency of the motor can be realized by always correcting a commutation control signal to an optimum phase.收藏 引用 批量引用 报错 分享 文库来源 求助全文 DRIVING DEVICE FOR BRUSHLESS DC MOTOR 优质文献 ...
PURPOSE:To improve the high speed performance and the acceleration performance of a vehicle while enhancing the efficiency of a motor. CONSTITUTION:The duty ratio of exciting current being fed to a DC brushless motor 1 in a motor vehicle is controlled depending on the displacement of an accelerato...
BRUSHLESS DC MOTOR DRIVING DEVICE PROBLEM TO BE SOLVED: To provide a brushless DC motor driving device capable of preventing the abnormal abrasion of a ball bearing even when the motor continues to rotate at constant speed for a long period of time. O Takeshi,岡田 健,N Masayuki,... 被引...
A brushless D.C. motor drive circuit provides full available D. C. bus voltage to the motor during periods of motor speed acceleration and deceleration and modulated D.C. voltage to the motor during periods when no demands are made on the motor to accelerate or decelerate, thus avoiding time...