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21. 发明授权

US06390249B2 Control method for a roller with a built-in motor 有权
标题翻译：带内置电机的滚筒的控制方法
公开(公告)号：US06390249B2
公开(公告)日：2002-05-21
申请号：US09905764
申请日：2001-07-13
申请人： Toshiyuki Tachibana
发明人： Toshiyuki Tachibana
IPC分类号： B60T1304
CPC分类号： B65G23/08
摘要： In a roller with a built-in motor, which is powered by a brushless motor and stopped by an electromagnetic brake, when an electric current is supplied to the brushless motor, an electric current is supplied at a certain voltage to the electromagnetic coil to release the electromagnetic brake. The rpm of the brushless motor is detected; and when it reaches a certain predetermined level, the supply of the electric current to the electromagnetic coil is turned off and on in a short period of time, thus maintaining the released condition of the electromagnetic brake. By turning off and on the supply of the electric current to the electromagnetic coil, the average voltage can be maintained low, and the heat generation can be reduced.
摘要翻译：在具有由无刷电动机驱动并由电磁制动器停止的内置电动机的辊中，当向无刷电动机供电时，向电磁线圈供给电流以释放电流电磁制动器。检测无刷电机的转速; 并且当其达到一定的预定水平时，在短时间内关断和接通电磁线圈的电流，从而保持电磁制动器的释放状态。通过关闭和向电磁线圈供应电流，可以将平均电压保持为低，并且可以降低发热。

22. 发明申请

US20050024010A1 Driving apparatus for driving a brushless motor 有权
公开(公告)号：US20050024010A1
公开(公告)日：2005-02-03
申请号：US10885835
申请日：2004-07-07
申请人： Toshiyuki Tachibana
发明人： Toshiyuki Tachibana
IPC分类号： H02P6/16 , H02P6/24 , H02P5/06
CPC分类号： H02P6/24 , H02P6/17
摘要： A driving system for driving a brushless motor effects a rotation control of a rotor by sequentially switching application of a current to magnetic coils disposed in a stator in response to a detection signal from a pole-position detector. The driving system comprises a controlling circuit for generating a driving signal, an inverter control circuit for controlling application of the current to the coils by adjusting opening and closing of switching devices in response to the driving signal, and a rotational speed sensor. The controlling circuit generates a braking signal when a rotational speed of the rotor is beyond a predetermined value, and transmits the braking signal to the inverter control circuit. The inverter control circuit effects a braking control in response to the braking signal by application of the current to at least one coil except those coils being excited upon reception of the braking signal.

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