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公开(公告)号：US20240364242A1
公开(公告)日：2024-10-31
申请号：US18682718
申请日：2022-08-16
IPC分类号： H02P5/52
CPC分类号： H02P5/52
摘要： A drive unit for driving a load, like a centrifugal compressor, a pump, or the like, comprising a driving shaft connected to the load to be driven. The drive unit comprises a plurality of electric motors connected to the driving shaft and a plurality of variable frequency drives electrically connected to the power grid used to feed each electric motor.
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公开(公告)号：US20110018482A1
公开(公告)日：2011-01-27
申请号：US12756868
申请日：2010-04-08
IPC分类号： H02H7/08
摘要： A twin motor actuator includes a pair of motor controllers for controlling respective motors according to commands received by each motor controller, and a communication link for communicating the commands received by each motor controller to the other motor controller. The motor controllers are configured to transmit the commands received by the motor controller to the other motor controller via the communication link, determine whether contradictory commands have been received by the motor controllers, and control the motors at a defined state if contradictory commands are received. The communication link is an electrically isolated communication link and the defined state may be the state of the motors immediately before detecting the contradictory commands.
摘要翻译： 双电机执行器包括一对电动机控制器，用于根据每个电动机控制器接收到的命令来控制各个电动机;以及通信链路，用于将由每个电动机控制器接收到的命令传送到另一个电动机控制器。 电动机控制器被配置为经由通信链路将由电动机控制器接收到的命令发送到另一个电动机控制器，确定电动机控制器是否已经接收到矛盾的命令，并且如果接收到矛盾的命令则将电动机控制在规定的状态。 通信链路是电隔离的通信链路，并且所定义的状态可以是在检测到矛盾命令之前马达的状态。
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公开(公告)号：US20060186841A1
公开(公告)日：2006-08-24
申请号：US11364218
申请日：2006-02-28
申请人： Richard Piefer , Thomas Rehm , Kevin Baumann , Christopher Como , John Davis , David Stringfellow
发明人： Richard Piefer , Thomas Rehm , Kevin Baumann , Christopher Como , John Davis , David Stringfellow
IPC分类号： H02P5/00
CPC分类号： H02P5/52 , B41F13/0045 , B41P2213/734 , B65H2403/943 , G05B19/404 , G05B2219/41123 , G05B2219/45187 , H02P5/56
摘要： A method and assembly for synchronizing machine operations, the assembly comprising a reference generator for generating a speed reference signal and a position reference signal, a plurality of slave units, each slave unit including, a mechanical device, a separate motor linked to and driving the mechanical device and a separate unit controller for controlling the unit motor, the unit controller receiving and using the reference signals to control motor operation and a synchronizer receiving the reference signals from the control signal source and simultaneously providing the reference signals to each of the slave unit controllers for use in controlling operation of the motors in a synchronized fashion.
摘要翻译： 一种用于同步机器操作的方法和组件，所述组件包括用于产生速度参考信号和位置参考信号的参考发生器，多个从单元，每个从单元包括机械装置，连接到并驱动 机械装置和用于控制单元电动机的单独的单元控制器，单元控制器接收和使用参考信号来控制电动机操作，以及同步器接收来自控制信号源的参考信号，并同时向每个从单元提供参考信号 用于以同步方式控制电动机的操作的控制器。
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公开(公告)号：US4731568A
公开(公告)日：1988-03-15
申请号：US911682
申请日：1986-09-25
申请人： Jiroh Shimada
发明人： Jiroh Shimada
CPC分类号： H02P5/52 , G11B15/467 , H02P23/16
摘要： An error signal generator for generating a plurality of error signals for various control values, comprises a time controller for sequentially and periodically generating a plurality of status signals, the number of which corresponds to the number of the control values. A read-out signal generator receives reference signals and/or detection signals for generating a read-out signal in response to one of the reference signals selected by the associated status signal. There is provided a preset memory storing a plurality of preset digital values for the control values and responsive to the read-out signal so as to output to a bus the preset digital value designated by the associated status signal. A count memory responds to each status signal so as to read out the data to the bus from one of the memory areas designated by the associated status signal and then is rewritten with the data on the bus into the same memory area. An adder operates to periodically subtract a value of "1" from the data on the bus and to return the result of the subtraction to the bus. An error memory responds to each of the detection signals so as to write the data on the bus into one of the memory areas designated by the associated status signal. The respective memory areas provide the data stored therein as the error signals.
摘要翻译： 一种用于产生用于各种控制值的多个误差信号的误差信号发生器，包括用于顺序地和周期性地产生多个状态信号的时间控制器，其数量对应于控制值的数量。 读出信号发生器响应于由相关联的状态信号选择的参考信号之一接收用于产生读出信号的参考信号和/或检测信号。 提供了存储多个用于控制值的预设数字值并且响应于读出信号以便向总线输出由相关联的状态信号指定的预设数字值的预设存储器。 计数存储器响应于每个状态信号，以便从由相关联的状态信号指定的存储区之一读出数据到总线，然后用总线上的数据重新写入相同的存储区。 一个加法器用于周期性地从总线上的数据中减去“1”值，并将减法的结果返回到总线。 错误存储器响应于每个检测信号，以便将总线上的数据写入由相关联的状态信号指定的存储区域之一。 相应的存储区域提供存储在其中的数据作为误差信号。
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公开(公告)号：US4617761A
公开(公告)日：1986-10-21
申请号：US638682
申请日：1984-08-08
申请人： Satoshi Miyatake , Mitsuo Abe , Masao Kume
发明人： Satoshi Miyatake , Mitsuo Abe , Masao Kume
CPC分类号： H02P5/52 , B23F23/00 , B23F23/006 , B23F5/04 , G05B19/186
摘要： A machine for automatically grinding a helical gear. The machine comprises a first rotational drive source for rotating a grinding wheel, a second rotational drive source for rotating a helical gear in mesh with the grinding wheel, a third rotational drive source for displacing the helical gear and the second rotational drive source in unison. Pulse generators are operatively connected to the first and third rotational drive sources. An output signal from one of the pulse generator is subtracted from an output signal from the other pulse generator to produce differential pulses which serve as drive pulses for the second rotational drive source.
摘要翻译： 用于自动研磨斜齿轮的机器。 机器包括用于旋转砂轮的第一旋转驱动源，用于旋转与砂轮啮合的斜齿轮的第二旋转驱动源，用于一致地移动斜齿轮和第二旋转驱动源的第三旋转驱动源。 脉冲发生器可操作地连接到第一和第三旋转驱动源。 从来自其他脉冲发生器的输出信号中减去来自脉冲发生器之一的输出信号，以产生用作第二旋转驱动源的驱动脉冲的差分脉冲。
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公开(公告)号：US3967170A
公开(公告)日：1976-06-29
申请号：US517876
申请日：1974-10-25
申请人： Ian M. MacDonald , Charles J. Cowie
发明人： Ian M. MacDonald , Charles J. Cowie
CPC分类号： H02P5/52
摘要： Apparatus for synchronizing the relative positions of motor-driven machines. Preliminary to operating the machines in synchronism, the rotors of individual synchronous motors that drive the machines are moved to a stop at certain angular positions. The angular positions are such that when inverter voltage is thereafter applied to the stators of all of the motors from a common inverter, the instantaneous angular position of the stator magnetic field with respect to the respective rotor is the same for all of the motors. In one embodiment, several machines are synchronized as to position by first operating each at low speed to a home position. Arrival of each machine at its home position is detected by detecting the simultaneous existence of two signals: (a) a first signal indicating that the instantaneous phase of inverter voltage applied to the stator is within a predetermined range, (b) a second signal indicating that the position of the machine member driven by the respective motor is within a predetermined tolerance range of the home position. Thereupon, if a third signal indicates that the speed of the motor is below a predetermined threshold speed, a brake is applied to hold the machine in its home position. After all of the machines reach their home positions their respective brakes can be released and all motors can be energized from a common inverter in order to operate the machines in positional synchronism.
摘要翻译： 用于同步电动机的相对位置的装置。 初步的同步操作机器，驱动机器的各个同步电动机的转子在某些角度位置被移动到停止位置。 角位置使得当逆变器电压随后从公共逆变器施加到所有电动机的定子时，定子磁场相对于各个转子的瞬时角位置对于所有电动机都是相同的。 在一个实施例中，几台机器通过首先以低速首先操作到原始位置来同步位置。 通过检测两个信号的同时存在来检测每个机器在其初始位置的到达：（a）指示施加到定子的逆变器电压的瞬时相位在预定范围内的第一信号，（b）指示 由各个电动机驱动的机器构件的位置在初始位置的预定公差范围内。 因此，如果第三信号指示电动机的速度低于预定阈值速度，则施加制动器以将机器保持在其初始位置。 在所有机器到达其原始位置之后，各自的制动器可以被释放，并且所有的电动机都可以从普通变频器通电，以便以同步的方式操作机器。
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公开(公告)号：US3478178A
公开(公告)日：1969-11-11
申请号：US3478178D
申请日：1967-03-24
申请人： FOWLER ALLAN R
发明人： GRACE ALAN G
CPC分类号： G05D3/18 , H02P5/52 , H02P7/2913 , H03K5/26 , Y10S388/915 , Y10S388/921
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公开(公告)号：US2449065A
公开(公告)日：1948-09-14
申请号：US65392046
申请日：1946-03-12
申请人： LEONARD FREINKEL
发明人： LEONARD FREINKEL
IPC分类号： H02P5/52
CPC分类号： H02P5/52 , Y10T307/735
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