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1. 发明授权

US11955918B2 Motor driver having startup adjusting mechanism 有权
公开(公告)号：US11955918B2
公开(公告)日：2024-04-09
申请号：US17860074
申请日：2022-07-07
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Ming-Jung Tsai
IPC分类号： H02P6/08 , H02K11/33 , H02P6/20
CPC分类号： H02P6/08 , H02K11/33 , H02P6/20 , H02P2209/11 , H02P2209/13
摘要： A motor driver having a startup adjusting mechanism is provided. A steady-state detector circuit detects data for driving a motor to stably rotate to output a steady-state detected signal. A startup waveform pattern circuit selects one of a plurality of startup waveform patterns to output a startup waveform pattern signal according to the steady-state detected signal. A startup waveform generator circuit outputs a startup waveform signal according to the startup waveform pattern signal. A motor controlling circuit controls a motor driving circuit to start up the motor according to the startup waveform signal.

2. 发明授权

US10978973B2 Motor driving circuit and method thereof 有权
公开(公告)号：US10978973B2
公开(公告)日：2021-04-13
申请号：US16749782
申请日：2020-01-22
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Ming-Jung Tsai
IPC分类号： H02P23/12 , H02P6/15 , H02P6/28
摘要： A motor driving circuit for driving a motor is provided. The motor driving circuit includes a plurality of inverter circuits, a driving signal look-up table module, a driving signal generating unit, a duty cycle command detector, and a protection control circuit. The driving signal look-up table module performs a table lookup on an input driving signal to generate a driving waveform pattern signal while outputting a positive period indication signal. The duty cycle command detector generates a first protection start signal when a duty cycle corresponding to the input driving signal changes by more than a predetermined amount of change. The protection control circuit outputs a forced disable signal in a positive period interval in response to receiving the first protection start signal to control the lower bridge switch of one phase of the inverter circuits to be turned off.

3. 发明授权

US10637376B1 Device and method for automatically detecting initial position of rotor of motor 有权
公开(公告)号：US10637376B1
公开(公告)日：2020-04-28
申请号：US16246350
申请日：2019-01-11
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Ming-Jung Tsai
IPC分类号： H02P6/16 , H02P6/28
CPC分类号： H02P6/16 , H02P6/28 , H02P2203/03 , H02P2209/13
摘要： A device and a method for automatically detecting an initial position of a rotor of a motor are provided. The device includes an initial position detector, a lookup table module and a controller. The initial position detector detects input voltages of the motor. The controller compares the input voltages with each other to determine the initial position of the rotor of the motor. The controller obtains a waveform pattern from the lookup table module to construct an activating waveform signal to be outputted to one of steps of the motor that corresponds to the initial position of the rotor to control the motor to run.

4. 发明授权

US11644041B2 System and method for automatically correcting rotational speed of motor of fan 有权
公开(公告)号：US11644041B2
公开(公告)日：2023-05-09
申请号：US17401762
申请日：2021-08-13
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Ming-Jung Tsai
IPC分类号： F04D27/00 , H02P7/00 , H02K7/14 , H02K11/33 , G06F1/20
CPC分类号： F04D27/004 , H02K7/14 , H02K11/33 , H02P7/00 , G06F1/203
摘要： A system and a method for automatically correcting a rotational speed of a motor of a fan are provided. After the fan is moved from an open space to a closed space, a sample and hold circuit samples and holds working periods of a driving signal by which the motor is driven to rotate at a first rotational speed as a first sampled working period, and a working period of a driving signal by which the motor is driven to rotate at a second rotational speed. An arithmetic circuit calculates a difference between the first sampled working period and a first reference working period, and a difference between the second sampled working period and a second reference working period. The arithmetic circuit calculates other working periods of driving signals by which the motor is driven to rotate at other rotational speeds based on the differences.

5. 发明授权

US10224909B1 Error elimination amplifier and motor control circuit using the same 有权
公开(公告)号：US10224909B1
公开(公告)日：2019-03-05
申请号：US15867885
申请日：2018-01-11
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Ming-Jung Tsai , Kun-Min Chen
IPC分类号： H03K5/003 , H03K5/24 , H02P29/00 , G01R33/07
摘要： Disclosed are an error elimination amplifier and a motor control circuit using the same. The error elimination amplifier includes an amplification circuit, a switching circuit, a comparison circuit, an output comparator and a calibration circuit. The comparison circuit includes a first comparator and a second comparator. The switching circuit and the first input end of the output comparator are electrically connected to a signal output end of the amplification circuit. A second input end of the output comparator is coupled to a reference voltage. The calibration circuit is electrically connected to the amplification circuit. An offset of the amplifier is eliminated through the amplification circuit, the switching circuit and the calibration circuit.

6. 发明授权

US10164556B2 Control apparatus for eliminating magnetizing error of rotor in DC motor and method thereof 有权
公开(公告)号：US10164556B2
公开(公告)日：2018-12-25
申请号：US14945412
申请日：2015-11-18
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Ming-Jung Tsai
IPC分类号： H02P7/29 , H02P7/03
摘要： A control apparatus for eliminating a magnetizing error of a rotor in a DC motor and a method thereof. The rotor in the DC motor is provided with 2N magnetic pole positions disposed therein for phase switching, where N is a positive integer no less than 1. The control apparatus includes a phase detector, at least one counter, a PWM signal generator, control circuit and a full-bridge driving circuit. The phase detector detects changes of states of the magnetic pole positions of the rotor to generate a periodic phase-switching signal. The counter counts a count value associated with each of the magnetic pole positions, respectively. The PWM signal generator periodically outputs 2N PWM signals and adjusts each of the PWM signals issued in a next cycle, respectively, according to the count value associated with each of the magnetic pole positions received in a current cycle.

7. 发明授权

US09325266B2 DC motor control method and DC motor control circuit 有权
标题翻译：直流电机控制方式和直流电机控制电路
公开(公告)号：US09325266B2
公开(公告)日：2016-04-26
申请号：US14500709
申请日：2014-09-29
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Ming-Jung Tsai , Chia-Tai Yang
IPC分类号： G05B11/28 , H02P7/29
CPC分类号： H02P7/29
摘要： The present disclosure provides a DC motor control method comprising comparing a first periodic signal and a second periodic signal for generating a control signal, wherein the frequency of the first periodic signal is lower than the frequency of the second periodic signal; configuring the amplitudes of the first periodic signal and the second periodic signal according to the needed speed of the DC motor, wherein increasing the ratio of the amplitude of the first periodic signal to the amplitude of the second periodic signal when the needed speed of the DC motor is increased, and decreasing the ratio of the amplitude of the first periodic signal to the amplitude of the second periodic signal when the needed speed of the DC motor is decreased.
摘要翻译：本公开提供了一种DC电机控制方法，包括比较第一周期信号和第二周期信号以产生控制信号，其中第一周期信号的频率低于第二周期信号的频率; 根据直流电动机的所需速度来配置第一周期信号和第二周期信号的振幅，其中当DC的所需速度时，增加第一周期信号的振幅与第二周期信号的振幅的比率电动机增加，并且当DC电动机的所需速度降低时，减小第一周期信号的振幅与第二周期信号的振幅的比率。

8. 发明授权

US12047021B2 Motor driver having high success rate starting mechanism 有权
公开(公告)号：US12047021B2
公开(公告)日：2024-07-23
申请号：US17878151
申请日：2022-08-01
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Ming-Jung Tsai
IPC分类号： H02P1/00 , H02P1/16
CPC分类号： H02P1/16
摘要： A motor driver having a high success rate starting mechanism is provided. A multi-segment slope pattern circuit connects a plurality of values of waveforms of a starting waveform signal to form a curve. The multi-segment slope pattern circuit determines a plurality of slopes respectively of a plurality of curve segments included in the curve according to a plurality of parameters related to a motor. The multi-segment slope pattern circuit outputs a multi-segment slope pattern signal according to the plurality of slopes of the plurality of curve segments. A startup signal generating circuit outputs a first startup waveform signal according to the multi-segment slope pattern signal. A motor controller circuit controls a motor driving circuit to start up the motor according to the first startup waveform signal.

9. 发明授权

US11742787B1 Motor controller circuit having stable speed controlling mechanism 有权
公开(公告)号：US11742787B1
公开(公告)日：2023-08-29
申请号：US17842882
申请日：2022-06-17
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Ming-Jung Tsai
IPC分类号： H02P6/08 , H02P27/08 , H02M7/5395 , H02M7/5387
CPC分类号： H02P27/085 , H02M7/5395 , H02P6/08 , H02M7/53873
摘要： A motor controller circuit having a stable speed controlling mechanism is provided. A duty cycle determining circuit determines duty cycles of the plurality of waveforms respectively of the first waveform signals within each of a plurality of time intervals to output a duty cycle instructing signal, according to a target working period corresponding to a target rotational speed. A signal generating circuit outputs the plurality of first waveform signals according to the duty cycle instructing signal, and outputs a second waveform signal. A motor control circuit outputs a plurality of on-time signals according to the plurality of first waveform signals and the second waveform signal. A motor driving circuit is controlled to operate and drive a motor to rotate according to the plurality of on-time signals.

10. 发明授权

US11038448B2 Motor driving circuit and method thereof 有权
公开(公告)号：US11038448B2
公开(公告)日：2021-06-15
申请号：US16791057
申请日：2020-02-14
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Ming-Jung Tsai
IPC分类号： H02P6/00 , H02P6/182 , H02P7/03 , H02P27/08 , H02P6/04 , H02P6/08 , H02P6/28
摘要： A motor driving circuit includes a rotation speed request generator, a motor driving signal generating unit, an inverter circuit, a position detecting circuit, a current detecting module, a rotation speed signal lookup module, an automatic leading angle controller, and a modulation signal generating circuit. When the rotation speed request signal indicates that a rotation speed of a motor is adjusted to a current rotation speed, the rotation speed signal lookup module queries a lookup table and generates a leading angle indication signal for indicating a current leading angle as a adjusting angle, and the automatic leading angle controller generates a phase adjusting signal, and the modulation signal generation circuit roughly adjusts a modulation waveform with the adjusting phase. The modulation signal generating circuit performs a fine adjustment on the modulation waveforms according to a phase difference, thereby making the current zero-crossing point near the BEMF zero point.

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