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1. 发明申请

US20110156631A1 MOTOR DRIVE CIRCUIT FOR ROTATING A ROTOR BY SUPPLYING THE CURRENTS TO TWO COILS 有权
标题翻译：通过向两个线圈供电来转动转子的电动机驱动电路
公开(公告)号：US20110156631A1
公开(公告)日：2011-06-30
申请号：US12978958
申请日：2010-12-27
申请人： Kazumasa TAKAI , Takeshi Naganuma , Kosaku Hioki , Yoshihiro Niwa
发明人： Kazumasa TAKAI , Takeshi Naganuma , Kosaku Hioki , Yoshihiro Niwa
IPC分类号： H02P8/12 , H02P6/08
CPC分类号： H02P8/36 , H02P8/22
摘要： When a driver unit is in a high impedance state as viewed from a first coil or a second coil, an induced voltage detector detects the voltage across the first coil or that across the second coil so as to detect an induced voltage occurring in the first coil or the second coil. The induced voltage detector includes a differential amplifier circuit for differentially amplifying an electric potential across the first coil or that across the second coil, and an analog-to-digital converter circuit for converting an analog value outputted from the differential amplifier circuit into a digital value and outputting the converted digital value to a control unit. The control unit generates a drive signal based on an input signal set externally and adjusts the drive signal in accordance with the induced voltage detected by the induced voltage detector so as to set the adjusted drive signal in the driver unit.
摘要翻译：当驱动器单元处于从第一线圈或第二线圈观察到的高阻抗状态时，感应电压检测器检测跨越第一线圈或跨越第二线圈的电压，以便检测在第一线圈中产生的感应电压或第二线圈。感应电压检测器包括用于差分放大跨越第一线圈或跨越第二线圈的电位的差分放大器电路和用于将从差分放大器电路输出的模拟值转换为数字值的模数转换器电路并将转换的数字值输出到控制单元。控制单元根据从外部设定的输入信号生成驱动信号，根据感应电压检测器检测出的感应电压来调整驱动信号，将驱动单元的调整后的驱动信号设定。

2. 发明申请

US20100188032A1 MOTOR SPEED CONTROLLER 有权
标题翻译：电机速度控制器
公开(公告)号：US20100188032A1
公开(公告)日：2010-07-29
申请号：US12691284
申请日：2010-01-21
申请人： Kazumasa TAKAI
发明人： Kazumasa TAKAI
IPC分类号： H02H7/097
CPC分类号： H02P6/08
摘要： A motor speed controller detects out-of-control reverse rotation of a motor even when the pulse signal obtained from the motor and synchronized with the rotation is of only one kind. A target instruction signal is generated on the basis of a target rotational speed ωT of the motor. A compensation instruction signal is generated on the basis of an error signal Ve that corresponds to a difference between the actual rotational speed ω and ωT. A composite signal is generated by combining above two instruction signals. A state in which the control direction of the composite signal with respect to ω is the reverse of the direction of ωT, and the strength of the composite signal exceeds a designated threshold continues for a designated period, is judged as a state of out-of-control reverse rotation, and restoration to the normal state is performed.
摘要翻译：电动机速度控制器即使当从电动机获得的脉冲信号与旋转同步只是一种时，也检测到电动机的失控反转。基于电机的目标转速ωT生成目标指令信号。基于与实际转速ω和ωT之间的差对应的误差信号Ve产生补偿指令信号。通过组合上述两个指令信号来产生复合信号。复合信号相对于ω的控制方向与ωT的方向相反的状态，复合信号的强度超过指定阈值的状态持续指定的时间段，被判定为超出的状态控制反向旋转，恢复正常状态。

3. 发明申请

US20110156624A1 MOTOR DRIVE CIRCUIT FOR DRIVING A SYNCHRONOUS MOTOR 有权
标题翻译：用于驱动同步电机的电机驱动电路
公开(公告)号：US20110156624A1
公开(公告)日：2011-06-30
申请号：US12976305
申请日：2010-12-22
申请人： Kazumasa TAKAI
发明人： Kazumasa TAKAI
IPC分类号： H02P6/18 , H02P8/14
CPC分类号： H02P6/182 , H02P8/14
摘要： A coil current detector detects a current component flowing through a coil. A scaling unit scales a drive signal. An induced voltage component extraction unit extracts an induced voltage component by removing the drive signal, scaled by the scaling unit, from the coil current component detected by the current detector. A phase difference detector detects a phase difference between the phase of the drive signal and that of the induced voltage component. A signal adjustment unit adjusts the drive signal so that the phase difference detected by the phase difference detector can be brought close to a target phase difference.
摘要翻译：线圈电流检测器检测流过线圈的电流分量。缩放单元缩放驱动信号。感应电压分量提取单元通过从由电流检测器检测的线圈电流分量中去除由缩放单元缩放的驱动信号来提取感应电压分量。相位差检测器检测驱动信号的相位与感应电压分量的相位之间的相位差。信号调整单元调节驱动信号，使得由相位差检测器检测的相位差可以接近目标相位差。

4. 发明申请

US20110074321A1 MOTOR DRIVE CONTROL CIRCUIT 有权
标题翻译：电机驱动控制电路
公开(公告)号：US20110074321A1
公开(公告)日：2011-03-31
申请号：US12893531
申请日：2010-09-29
申请人： Kazumasa TAKAI
发明人： Kazumasa TAKAI
IPC分类号： H02P6/08
CPC分类号： H02P6/18
摘要： A differential amplifier detects a coil current Is at the time of steady rotation of a synchronous motor. An application voltage S0 at this time is detected from an output of an ATT circuit and so on. With the use of the coil current Is which is detected, the application voltage S0 at that time, and a predetermined scaling factor As, an induced current Ib is obtained based on Ib=As·S0−Is. The application voltage to the motor is controlled based on the induced current Ib which is obtained.
摘要翻译：差动放大器检测同步电机稳定旋转时的线圈电流Is。从ATT电路的输出等检测此时的施加电压S0。通过使用检测到的线圈电流Is，根据Ib = As·S0-Is，求出此时的施加电压S0和规定的比例因子As，感应电流Ib。基于获得的感应电流Ib来控制对电动机的施加电压。

5. 发明申请

US20100188030A1 MOTOR SPEED CONTROLLER 有权
标题翻译：电机速度控制器
公开(公告)号：US20100188030A1
公开(公告)日：2010-07-29
申请号：US12691172
申请日：2010-01-21
申请人： Kazumasa TAKAI
发明人： Kazumasa TAKAI
IPC分类号： H02P6/08
CPC分类号： H02P6/08
摘要： In a motor speed controller, feedback control is implemented at a gain independent of the target rotational speed ωT while the increase in the circuit size or processing load is reduced. The rotational speed ω of the motor is controlled on the basis of a pulse signal in which a pulse period τP varies in inverse proportion to ω. A count clock generation circuit varies the clock frequency FC in proportion to ωT. The pulse period measurement section counts the count clock CLK during τP at the present ω and determines a measured count value C. The feedback filter inputs, as an error signal Ve, the difference between C and a target count value CN that corresponds to ωT, and generates an instruction signal to provide compensation for Ve. The feedback filter scales the instruction signal at a scaling factor that is proportional to ωT.
摘要翻译：在电动机速度控制器中，反馈控制以与目标转速ωT无关的增益实现，同时电路尺寸或处理负载的增加减小。基于脉冲周期τP与ω成反比变化的脉冲信号来控制电机的转速ω。计数时钟产生电路与时钟频率FC成比例地变化。脉冲周期测量部分在当前ω的τP期间对计数时钟CLK进行计数，并确定测量的计数值C.反馈滤波器输入C与对应于ωT的目标计数值CN之间的差作为误差信号Ve，并产生指令信号以提供Ve的补偿。反馈滤波器以与ωT成比例的比例因子缩放指令信号。

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