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61. 发明授权

US07088070B2 Resonant scanning mirror driver circuit 有权
标题翻译：共振扫描镜驱动电路
公开(公告)号：US07088070B2
公开(公告)日：2006-08-08
申请号：US11080832
申请日：2005-03-14
申请人： Mark David Hagen
发明人： Mark David Hagen
IPC分类号： G05B11/28
CPC分类号： G02B26/0841
摘要： A resonant scanning mirror driver configured to drive a micro-electro-mechanical system (MEMS) mirror to a desired deflection utilizes a PWM pattern selected from patterns having a preset number of bits. The patterns reflect the first positive quarters of the PWM pattern and the remaining quarters are generated utilizing the symmetry of the sine wave that is generated. Patterns having a harmonic distortion less than a preselected maximum are sorted into amplitude bins and ranked to generate a subset of patterns having a linearly varying deflection amplitude.
摘要翻译：配置成将微电子机械系统（MEMS）反射镜驱动到期望的偏转的谐振扫描镜驱动器利用从具有预定位数的图案中选择的PWM图案。这些图案反映了PWM图案的第一个正方区，并且利用产生的正弦波的对称性产生剩余的四分之一。具有小于预选最大值的谐波失真的图案被分类为振幅箱并被分级以产生具有线性变化的偏转幅度的图案的子集。

62. 发明申请

US20060152184A1 Pulse width modulation circuit 有权
标题翻译：脉宽调制电路
公开(公告)号：US20060152184A1
公开(公告)日：2006-07-13
申请号：US11320658
申请日：2005-12-30
申请人： Yuichi Matsushita
发明人： Yuichi Matsushita
IPC分类号： G05B11/28
CPC分类号： G05B11/28
摘要： The present invention provides a pulse width modulation (PWM) circuit comprising an PWM control circuit for setting an output signal to low when a logical level of a oscillation signal at a first input terminal changes from low to high, for resetting the output level to low in response to an effective input signal at a second terminal, a charge and discharge means for charging a first node (node1) when the output stays in low, for discharging the stored charge of node1 when the output stays in high, a comparator (C1) for outputting an output signal to the second terminal according to the first node signal and a first reference signal (Vref0), a discharge current controlling means for the stored charge on the first node, wherein the discharge current controlling means comprises a bias circuit 2 for controlling the discharge current based on constant current.
摘要翻译：本发明提供了一种脉冲宽度调制（PWM）电路，其包括PWM控制电路，用于当第一输入端的振荡信号的逻辑电平从低变为高时将输出信号设置为低，以将输出电平重置为低电平响应于第二终端处的有效输入信号，当输出保持在低电平时，用于对第一节点（节点1）充电的充电和放电装置，用于当输出保持在高电平时放电节点1的存储电荷;比较器（C 1），用于根据第一节点信号和第一参考信号（Vref 0）向第二终端输出输出信号;放电电流控制装置，用于在第一节点上存储的电荷，其中放电电流控制装置包括用于基于恒定电流控制放电电流的偏置电路2。

63. 发明授权

US07012396B1 Increased digital spindle motor control resolution through dither 有权
标题翻译：通过抖动提高数字主轴电机控制分辨率
公开(公告)号：US07012396B1
公开(公告)日：2006-03-14
申请号：US10955774
申请日：2004-09-30
申请人： Jason P. Brenden , James A. Dahlberg , Jaydip Bhaumik
发明人： Jason P. Brenden , James A. Dahlberg , Jaydip Bhaumik
IPC分类号： G05B11/28 , G05B11/01 , G11B11/28
CPC分类号： G05B11/28
摘要： A motor controller provides pulse width modulated drive signals to a motor. A digital demand code for controlling motor speed is input to the motor controller. A dither generator generates a digital dither value, which an adder adds to the demand code to generate a dithered demand code. A position determining circuit determines a rotational position of the motor. A pulse width modulation controller generates pulse width modulated drive signals with duty cycles controlled as a function of a stored set of waveform coefficients, the dithered demand code, and the rotational position of the motor.
摘要翻译：电动机控制器向电动机提供脉宽调制驱动信号。用于控制电机速度的数字需求代码被输入到电机控制器。抖动发生器产生数字抖动值，加法器加到需求代码以产生抖动需求代码。位置确定电路确定电动机的旋转位置。脉冲宽度调制控制器产生脉冲宽度调制的驱动信号，其占空比被控制为存储的一组波形系数，抖动需求代码和马达的旋转位置的函数。

64. 发明授权

US06919703B2 Programmable PWM stretching for tachometer measurement 有权
标题翻译：用于转速计测量的可编程PWM拉伸
公开(公告)号：US06919703B2
公开(公告)日：2005-07-19
申请号：US10459169
申请日：2003-06-11
申请人： Eileen M. Marando , Robert W. Schoepflin , Richard E. Wahler
发明人： Eileen M. Marando , Robert W. Schoepflin , Richard E. Wahler
IPC分类号： G01P3/481 , G05B11/28
CPC分类号： G01P3/481
摘要： A system may include a tachometer reading unit and a PWM (Pulse Width Modulated) signal generator configured to generate a PWM signal. The tachometer reading unit may be configured to obtain a tachometer reading from a tachometer signal generated by a device powered by the PWM signal. The tachometer reading unit includes a register configured to store a value indicative of a maximum stretching duration. The tachometer reading unit is configured to update the register in response to receiving a new value of the maximum stretching duration. The tachometer reading unit may be configured to control the PWM signal generator to stretch a pulse in the PWM signal and to not stretch the pulse longer than the maximum stretching duration indicated by the register. The tachometer reading unit is configured to obtain the tachometer reading during the stretched pulse in the PWM signal.
摘要翻译：系统可以包括转速计读取单元和被配置为产生PWM信号的PWM（脉宽调制）信号发生器。转速计读取单元可以被配置为从由PWM信号供电的装置产生的转速计信号获得转速计读数。转速计读取单元包括配置为存储指示最大拉伸持续时间的值的寄存器。转速计读取单元被配置为响应于接收到最大拉伸持续时间的新值而更新寄存器。转速计读取单元可以被配置为控制PWM信号发生器在PWM信号中拉伸脉冲，并且不延伸比由寄存器指示的最大拉伸持续时间更长的脉冲。转速计读数单元配置为在PWM信号中拉伸脉冲期间获得转速计读数。

65. 发明授权

US6433502B2 Spindle motor drive circuit 失效
标题翻译：主轴电机驱动电路
公开(公告)号：US6433502B2
公开(公告)日：2002-08-13
申请号：US87995101
申请日：2001-06-14
申请人： NEC CORP
发明人： OKU KOICHIRO
IPC分类号： H02P6/08 , G05B11/28
CPC分类号： H02P6/085
摘要： The spindle motor drive circuit includes a power source voltage varying device for varying a voltage applied to a motor by controlling a power source voltage, and a pulse width varying device for varying a pulse width by pulse width modulation.
摘要翻译：主轴电动机驱动电路包括用于通过控制电源电压来改变施加到电动机的电压的电源电压变化装置，以及用于通过脉冲宽度调制改变脉冲宽度的脉冲宽度变化装置。

66. 发明授权

US6144182A Motor control method for injection molding machine and motor controller for carrying out the same 有权
标题翻译：电机控制方法为注塑机和电机控制器执行相同
公开(公告)号：US6144182A
公开(公告)日：2000-11-07
申请号：US487247
申请日：2000-01-19
申请人： Tsuginobu Totani , Fumiyuki Katoh , Kiyoshi Sasaki , Yukio Iimura , Jun Koike , Masahiro Tamaki , Yutaka Yamaguchi
发明人： Tsuginobu Totani , Fumiyuki Katoh , Kiyoshi Sasaki , Yukio Iimura , Jun Koike , Masahiro Tamaki , Yutaka Yamaguchi
IPC分类号： B29C45/76 , B29C45/84 , G05B11/28 , G05B23/02 , B29C45/77 , G05B11/01
CPC分类号： B29C45/7666 , G05B11/28 , G05B23/027
摘要： The duty of a current to be supplied to an injection motor is calculated on the basis of the ratio between set injection time for which the injection motor operates and molding cycle time, a shaft torque of the injection motor is calculated on the basis of a set maximum injection force of the injection molding condition, a maximum current for the injection motor is determined on the basis of the calculated shaft torque, and it is decided that the injection motor is overloaded, an alarm is given, a duty for a current that enables continuous molding is retrieved for the maximum current, a state that enables continuous molding is displayed and the molding cycle time determining the duty of the current that enables continuous molding is corrected when the current having the calculated desired duty is smaller than the maximum current.
摘要翻译：基于喷射马达运转的设定喷射时间与成型周期时间之间的比率，基于一组计算喷射马达的轴转矩来计算提供给喷射马达的电流的负荷注射成型条件的最大注入力，基于计算出的轴转矩来确定注射电动机的最大电流，并且判定注射电动机过载，报警，能够实现的电流的占空比针对最大电流检索连续成型，显示能够连续成型的状态，并且当具有计算出的所需占空比的电流小于最大电流时，校正确定能够连续成型的电流的占空比的成型周期时间。

67. 发明授权

US6138047A Low frequency PWM generation method for a microprocessor-based controller 失效
标题翻译：基于微处理器的控制器的低频PWM生成方法
公开(公告)号：US6138047A
公开(公告)日：2000-10-24
申请号：US21018
申请日：1998-02-09
申请人： Jerry L. Proffitt , Lawrence Edward Piekarski
发明人： Jerry L. Proffitt , Lawrence Edward Piekarski
IPC分类号： G05B11/28 , H02P27/08 , G05B11/01
CPC分类号： H02P27/08 , G05B11/28
摘要： An improved method of operation for a microprocessor-based controller wherein a frequency limited counter can be used to generate low frequency PWM signals having on and/or off periods that exceed the period of the microprocessor's free-running counter. The improved method of operation involves comparing the requested PWM period (on or off) to the counter period, and determining if multiple counter periods are required to generate the requested PWM period. If multiple counter periods are required, the controller configures the PWM output port to maintain its current logic level until the requested period has timed out. In this way, the microprocessor can accurately generate the requested low frequency PWM output signals without requiring any hardware modifications.
摘要翻译：一种用于基于微处理器的控制器的改进的操作方法，其中频率限制计数器可用于产生具有超过微处理器自由运行计数器的周期的开和/或关闭周期的低频PWM信号。改进的操作方法包括将请求的PWM周期（开或关）与计数器周期进行比较，以及确定是否需要多个计数器周期来产生所请求的PWM周期。如果需要多个计数器周期，则控制器将PWM输出端口配置为保持其当前逻辑电平，直到请求的周期超时为止。以这种方式，微处理器可以精确地产生所要求的低频PWM输出信号，而不需要任何硬件修改。

68. 发明授权

US6111383A Controller for feeding chopped electricity 失效
标题翻译：控制器供电切断电
公开(公告)号：US6111383A
公开(公告)日：2000-08-29
申请号：US259260
申请日：1999-03-01
申请人： Masanori Sugiyama , Chiaki Honma
发明人： Masanori Sugiyama , Chiaki Honma
IPC分类号： H02M3/155 , H02P7/288 , H02P8/14 , G05B11/28
CPC分类号： H02P8/14
摘要： A rising saw tooth signal generating circuit generates a rising saw tooth signal having a constant amplitude and a constant period which corresponds to a frequency being slightly higher than the human audible frequency range. The rising saw tooth signal generating circuit also generates a binary signal which generates a reference chopping timing synchronizing with the rising saw tooth signal. The rising saw tooth signal is inverted and a descending saw tooth signal is generated. The descending saw tooth signal is added to the reference current signal and a binary signal is generated by the result of the comparison between the addition signal and the actual current signal. A flip-flop generates a signal which reaches a low level whenever the binary signal is descended and which reaches a high level whenever the reference chopping timing comes. A further binary signal which moves to the high level at the feeding of the current and the signal are supplied to the AND gate. The output signal of the AND gate and the signal is supplied to an AND gate and a binary signal for driving a switching element is obtained.
摘要翻译：上升的锯齿信号发生电路产生具有恒定振幅和恒定周期的上升锯齿信号，该恒定周期对应于略高于人类可听频率范围的频率。上升锯齿信号发生电路还产生二进制信号，该二进制信号产生与上升锯齿信号同步的参考斩波定时。上升的锯齿信号被反转，产生锯齿信号的下降。下降的锯齿信号被加到参考电流信号中，并且通过加法信号和实际电流信号之间的比较结果产生二进制信号。触发器产生每当二进制信号下降时达到低电平并且每当参考斩波定时到达时达到高电平的信号。在馈电电流和信号时移动到高电平的另一个二进制信号被提供给与门。与门和信号的输出信号被提供给与门，并获得用于驱动开关元件的二进制信号。

69. 发明授权

US6047135A Driving mechanism for keeping feedback cycle constant, apparatus with the mechanism, and its control method 有权
标题翻译：保持反馈循环恒定的驱动机构，机构设备及其控制方法
公开(公告)号：US6047135A
公开(公告)日：2000-04-04
申请号：US196929
申请日：1998-11-20
申请人： Satoshi Hamada
发明人： Satoshi Hamada
IPC分类号： G03B5/00 , G02B7/08 , G05B11/28 , G05D3/00 , G05D3/12 , H01L41/04 , H02N2/00 , G03B17/00
CPC分类号： H02N2/067 , G02B7/08 , H02N2/025
摘要： A driving device, for driving a compensation lens of a camera, with a feedback control for an actuator therefor in which it is easy to keep a feedback cycle constant. In the feedback control, the feedback cycle is kept constant by counting the number of PWM pulses for driving the actuator. In case that the actuator is of a type in which it is controlled by more than one PWM pulse trains with different phases, one pulse train with predetermined phase is continuously supplied to the actuator even when the actuator is not driven, where the number of pulses in the one pulse train is counted so as to keep the feedback cycle constant. The actuator preferably employs a piezoelectric element which expands and contracts in response to a wave-form pulse included in the PWM pulse train.
摘要翻译：用于驱动摄像机的补偿透镜的驱动装置，其具有用于其中易于保持反馈周期恒定的致动器的反馈控制。在反馈控制中，通过对用于驱动执行器的PWM脉冲数进行计数，反馈周期保持不变。在致动器是由多于一个具有不同相位的PWM脉冲串控制的类型的情况下，一个具有预定相位的脉冲串被连续提供给致动器，即使当致动器未被驱动时，脉冲数在一个脉冲序列中进行计数，以保持反馈周期不变。优选地，致动器采用压电元件，其响应包括在PWM脉冲串中的波形脉冲而膨胀和收缩。

70. 发明授权

US5933313A Pulse-width modulation control system for electronic device 失效
标题翻译：电子设备脉宽调制控制系统
公开(公告)号：US5933313A
公开(公告)日：1999-08-03
申请号：US610068
申请日：1996-02-29
申请人： Hideo Furukawa
发明人： Hideo Furukawa
IPC分类号： F16K31/06 , G05B11/28 , H01H47/00 , H01H47/32 , H01H47/02
CPC分类号： G05B11/28 , H01H47/325 , H01H47/002
摘要： A control system for an electronic device such as a solenoid for a vehicle transmission which is controlled by PWM. In the system, a difference (I.sub.H -I.sub.L) between the maximum value and the minimum value of current supplied to the solenoid is calculated and current supplied to the solenoid through a driver circuit is calculated based on the calculated difference and a predetermined coefficient as:I=I.sub.L +(I.sub.H -I.sub.L).times.Kduty.When a solenoid is controlled through PWM, feedback correction of the current flow becomes necessary owing to fluctuation in the voltage of the on-board power supply and fluctuation in the resistance of the electronic device with temperature. Since the instantaneous current in the solenoid varies constantly with the duty ratio, the detected value therefore differs depending on the sampling time point. Prior art smoothing solves the problem, but leads to raise the feedback high, causing overshooting. The arrangement makes it possible to detect the current without smoothing, enhancing the control performance.
摘要翻译：一种电子装置的控制系统，例如由PWM控制的用于车辆变速器的螺线管。在该系统中，计算提供给螺线管的电流的最大值和最小值之间的差（IH-IL），并且基于计算出的差和预定系数来计算通过驱动电路提供给螺线管的电流： I = IL +（IH-IL）xKduty.当通过PWM控制螺线管时，由于板上电源的电压波动和电子设备的电阻随温度的波动，电流的反馈校正变得必要。由于螺线管中的瞬时电流随占空比不断变化，因此检测值因采样时间点而异。现有技术的平滑化解决了问题，但是导致反馈高，导致过冲。该布置使得可以在不平滑的情况下检测电流，从而提高控制性能。

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