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    • 1. 发明授权
    • Motor control for a brushless DC motor
    • 无刷直流电机的电机控制
    • US4546293A
    • 1985-10-08
    • US411075
    • 1982-08-24
    • William J. PetersonDennis T. Faulkner
    • William J. PetersonDennis T. Faulkner
    • H02P6/06H02P6/14H02K23/00H02P1/18
    • H02P6/06H02P6/153
    • This invention relates to a motor control system for a brushless DC motor having an inverter responsively coupled to the motor control system and in power transmitting relationship to the motor. The motor control system includes a motor rotor speed detecting unit that provides a pulsed waveform signal proportional to rotor speed. This pulsed waveform signal is delivered to the inverter to thereby cause an inverter fundamental current waveform output to the motor to be switched at a rate proportional to said rotor speed. In addition, the fundamental current waveform is also pulse width modulated at a rate proportional to the rotor speed.A fundamental current waveform phase advance circuit is controllingly coupled to the inverter. The phase advance circuit is coupled to receive the pulsed waveform signal from the motor rotor speed detecting unit and phase advance the pulsed waveform signal as a predetermined function of motor speed to thereby cause the fundamental current waveform to be advanced and thereby compensate for fundamental current waveform lag due to motor winding reactance which allows the motor to operate at higher speeds than the motor is rated while providing optimal torque and therefore increased efficiency.
    • 本发明涉及一种用于无刷直流电动机的电动机控制系统,该电动机控制系统具有响应于电动机控制系统和与电动机的动力传递关系的响应耦合的逆变器。 电动机控制系统包括电动机转子速度检测单元,其提供与转子速度成比例的脉冲波形信号。 该脉冲波形信号被输送到逆变器,从而使得以与所述转子速度成比例的速率切换输出到电动机的逆变器基波电流波形。 此外,基波电流波形也以与转子速度成比例的速率进行脉宽调制。 基波电流波形相位提前电路被控制地耦合到逆变器。 相位提前电路被耦合以接收来自电机转子速度检测单元的脉冲波形信号,并将脉冲波形信号相位推进为电机速度的预定函数,从而使基波电流波形提前,从而补偿基波电流波形 由于电动机绕组电抗而滞后,这允许电动机以比电动机额定的更高的速度运行,同时提供最佳转矩并因此提高效率。
    • 2. 发明申请
    • NEGATIVE SEQUENCE CARRIER SIGNAL CONTROLLER
    • 负序列载波信号控制器
    • US20100072930A1
    • 2010-03-25
    • US12236330
    • 2008-09-23
    • Vijay K. MaddaliWilliam J. Peterson
    • Vijay K. MaddaliWilliam J. Peterson
    • H02P6/18
    • H02P6/183H02P6/185
    • A negative sequence feedback circuit is connected to monitor and minimize unbalances in a high-frequency ac carrier signal provided to a motor/load for the purpose of detecting rotor position. The negative sequence feedback circuit detects unbalances in the high-frequency ac carrier signal and generates negative sequence feedback. The feedback is combined with command signals used to generate the high-frequency ac carrier signal, and the combination of the command signals with the negative sequence feedback is provided to an inverter for generation of the high-frequency ac carrier signal, wherein the negative sequence feedback reduces unbalances in the resulting high-frequency ac carrier signal such that a balanced high-frequency carrier signal is provided to the motor/load.
    • 连接负序反馈电路,以监测和最小化提供给电动机/负载的高频交流载波信号中的不平衡,以检测转子位置。 负序反馈电路检测高频交流载波信号的不平衡,产生负序反馈。 反馈与用于产生高频交流载波信号的指令信号组合,并且将命令信号与负序反馈的组合提供给用于产生高频交流载波信号的逆变器,其中负序列 反馈减少了所得到的高频交流载波信号的不平衡,使得平衡的高频载波信号被提供给电动机/负载。
    • 3. 发明授权
    • Fastener driving apparatus utilizing high capacity fastener package
    • 紧固件驱动装置采用高容量紧固件包装
    • US4037771A
    • 1977-07-26
    • US662954
    • 1976-03-01
    • William J. Peterson
    • William J. Peterson
    • B25C1/00B25C1/04
    • B25C1/003
    • Apparatus for driving successive fasteners from a package of generally parallel fasteners flexibly serially interconnected in general row formation having a total virgin package weight greatly in excess of that which could be practically manually handled, the apparatus comprising a portable power operated fastener driving device of the type operable to be manually handled by an operator within a workpiece containing limited space, a rotary tray for supporting a coiled package of fasteners at a location spaced horizontally from the limited space within which the device is to be manually handled, and an elongated guide track of a horizontal extent sufficient to extend from the location of the rotary tray to the limited space within which the device is to be manually handled, the guide track being supported at one end in cooperating relation with the rotary tray and connected at its other end with the device for movement thereby in response to the manual handling movement of the device, the supported connection of the one end of the guide track being operable to accommodate any movements imparted to the other end of the guide track by the manual handling movements of the device whereby such manual handling movements can be accomplished by the operator while supporting only a proportionate share of the weight of the guide track and a leading length of the fastener package extending from the rotary tray through the guide track and into cooperating relation with the fastener feeding mechanism of the device.
    • 用于从大致平行的紧固件驱动连续的紧固件的装置,所述紧固件大致平行的紧固件在一般排列形式中柔性地串联连接,其总原始包装重量大大超过可实际手动处理的重量,该装置包括一种便携式电动紧固件驱动装置 可操作地由包含有限空间的工件内的操作者手动操作的旋转托盘,用于在与要手动操作所述装置的有限空间水平定位的位置处支撑螺旋形的紧固件包装的旋转托盘;以及细长的导轨 水平范围足以从旋转托盘的位置延伸到装置将要被手动处理的有限空间中,导轨在一端被支撑在与转盘相配合的关系中,并在其另一端与 用于移动的装置,从而响应于装置的手动处理移动,t 他支撑导轨的一端的连接,其可操作以适应通过装置的手动操纵移动而赋予导轨另一端的任何运动,由此这种手动操纵运动可以由操作者完成,同时仅支撑比例 所述导轨的重量和所述紧固件组件的前导长度从所述旋转托盘延伸穿过所述导轨并与所述装置的所述紧固件进给机构的协作关系。
    • 6. 发明授权
    • Negative sequence carrier signal controller
    • 负序载波信号控制器
    • US08004222B2
    • 2011-08-23
    • US12236330
    • 2008-09-23
    • Vijay K. MaddaliWilliam J. Peterson
    • Vijay K. MaddaliWilliam J. Peterson
    • H02P6/18
    • H02P6/183H02P6/185
    • A negative sequence feedback circuit is connected to monitor and minimize unbalances in a high-frequency ac carrier signal provided to a motor/load for the purpose of detecting rotor position. The negative sequence feedback circuit detects unbalances in the high-frequency ac carrier signal and generates negative sequence feedback. The feedback is combined with command signals used to generate the high-frequency ac carrier signal, and the combination of the command signals with the negative sequence feedback is provided to an inverter for generation of the high-frequency ac carrier signal, wherein the negative sequence feedback reduces unbalances in the resulting high-frequency ac carrier signal such that a balanced high-frequency carrier signal is provided to the motor/load.
    • 连接负序反馈电路,以监测和最小化提供给电动机/负载的高频交流载波信号中的不平衡,以检测转子位置。 负序反馈电路检测高频交流载波信号的不平衡,产生负序反馈。 反馈与用于产生高频交流载波信号的指令信号组合,并且将命令信号与负序反馈的组合提供给用于产生高频交流载波信号的逆变器,其中负序列 反馈减少了所得到的高频交流载波信号的不平衡,使得平衡的高频载波信号被提供给电动机/负载。
    • 8. 发明授权
    • Laterally bendable belt conveyor
    • 可弯曲皮带输送机
    • US4526272A
    • 1985-07-02
    • US422796
    • 1982-09-24
    • William J. Peterson
    • William J. Peterson
    • B65G21/16B65G39/12B65G21/10
    • B65G21/16B65G39/12
    • An endless, laterally flexible and bendable belt conveyor particularly adapted for coal mining applications in facilitating the transport of the extracted coal up- or downslope and around corners in a continuous manner is disclosed. The conveying means includes a flat rubber belt reinforced along the middle portion thereof along which the major portion of the belt tension is directed so as to cause rotation of the tubular shaped belt when trammed around lateral turns thus preventing excessive belt bulging distortion between adjacent belt supports which would inhibit belt transport. Pretension induced into the fabric reinforced flat rubber belt by conventional belt take-up means supports the load conveyed when the belt conveyor is making lateral turns. The carrying and return portions of the belt are supported and formed into a tubular shape by a plurality of shapers positioned along its length. Each shaper is supported from above by a monorail and includes clusters of idler rollers which support the belt. Additional cluster rollers in each shaper permit the belt supporting roller clusters to rotate in response to the belt's operating tension imposed upon the cluster rollers by induced lateral belt friction forces. The freely rotating roller clusters thus permit the belt to twist on lateral curves without damage to itself while precluding escape of the conveyed material by effectively enclosing it in the tube-shaped, inner belt transport length.
    • 公开了一种无缝的,横向柔性和可弯曲的带式输送机,其特别适用于采煤应用,以促进提取的煤上或下坡和围绕角落的连续运输。 输送装置包括沿其中部加强的扁平橡胶带,沿着该平坦的橡胶带,带张力的主要部分沿着该平坦的橡胶带引导,以便在围绕横向转弯时引起管状带的旋转,从而防止相邻的带支撑件之间的过大的带膨胀变形 这将阻止皮带运输。 通过传统的皮带拾取装置引入织物加固扁平橡胶皮带中的预张力支持当皮带输送机横向转动时输送的载荷。 带的承载和返回部分通过沿其长度定位的多个成形器被支撑并形成为管状。 每个整形器由单轨从上方支撑,并且包括支撑皮带的惰辊组。 每个整形器中的附加的卷绕辊允许带支撑辊簇响应于通过诱导的侧向带摩擦力施加在群集辊上的带的操作张力而旋转。 因此,自由旋转的辊子群可以使带束在横向曲线上扭转而不损坏其自身,同时防止输送的材料通过有效地将其封闭在管状的内部带传送长度中而逸出。
    • 9. 发明授权
    • Control for an electrical generating and distribution system, and method
of operation
    • 发电和配电系统的控制及运行方法
    • US4403292A
    • 1983-09-06
    • US189776
    • 1980-09-22
    • Richard P. EjzakJames B. ThomWilliam J. PetersonTimothy F. Glennon
    • Richard P. EjzakJames B. ThomWilliam J. PetersonTimothy F. Glennon
    • B64D47/00H02J3/46H02P9/14G05B15/02G06F15/56
    • B64D47/00H02J3/46H02P9/14H02P2101/30Y10T307/313Y10T307/391Y10T307/653
    • A control for an electrical generating and distribution system utilizing a plurality of interconnected microprocessors. An electrical system, for an aircraft for example, may have two engine driven generators and an auxiliary power unit generator with loads connected to each of the engine driven generators through generator circuit breakers. An electrical distribution bus connected through bus tie breakers interconnects the load circuits and the auxiliary generator so that any one generator can power either or both loads. Each generator has a microprocessor generator control unit responsive to the associated generator conditions to control generator operation. A microprocessor bus power control unit is responsive to distribution circuit conditions and correlates information from the generator control units, contributing to operation of the bus tie breakers, controlling distribution of power from the generators to the loads. Serial data links between the bus power control unit and each of the generator control units provide for communication of input and control information and enable comparison of redundant circuit information enhancing reliability of the system operation. A generator voltage regulator utilizes the microprocessor of the generator control unit to develop an error voltage which is added to the average phase voltage of the generator, controlling the generator field current. In the event of a phase failure the generator control unit senses an abnormally high phase voltage condition, disables the average phase voltage circuit and the regulator continues to operate with the error voltage.
    • 一种利用多个互连的微处理器的发电和配电系统的控制。 例如,用于飞行器的电气系统可以具有两个发动机驱动的发电机和辅助动力单元发电机,其负载通过发电机断路器连接到每个发动机驱动的发电机。 通过总线连接断路器连接的配电总线将负载电路和辅助发电机相互连接,以便任何一个发电机可以为任一负载电流或两个负载供电。 每个发电机具有微处理器发生器控制单元,其响应相关联的发电机状况来控制发电机运行。 微处理器总线功率控制单元响应于分配电路条件并将来自发电机控制单元的信息相关联,有助于总线断路器的操作,控制从发电机到负载的功率分配。 总线功率控制单元和每个发电机控制单元之间的串行数据链路提供输入和控制信息的通信,并且能够比较提高系统操作的可靠性的冗余电路信息。 发电机电压调节器利用发电机控制单元的微处理器产生一个误差电压,该误差电压加到发电机的平均相电压上,控制发电机励磁电流。 在相位故障的情况下,发电机控制单元检测到异常高的相电压状态,禁止平均相电压电路,并且调节器继续以误差电压工作。