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    • 1. 发明申请
    • MOTOR DRIVING DEVICE
    • 电机驱动装置
    • WO1997038487A1
    • 1997-10-16
    • PCT/JP1997001276
    • 1997-04-11
    • CITIZEN WATCH CO., LTD.HIGUCHI, HaruhikoICHIKAWA, MasakazuKIHARA, HiroyukiMURAKAMI, TomomiTSUCHIYA, Hidetaka
    • CITIZEN WATCH CO., LTD.
    • H02P08/00
    • H02P6/20H02P8/02H02P8/08
    • A phase locked driving type motor is reliably started and stably rotated. A motor driving device is provided with a stepper motor constituted at least of a bipolar stator, a rotor with a bipolar permanent magnet, and a driving coil magnetically coupled to the stator, a driving pulse generating means which outputs a driving pulse signal for driving the stepper motor, a driving circuit which supplies a driving current to the driving coil according to the signal from the driving pulse generating means, a voltage detecting circuit which detects the back electromotive voltage generated by the rotation of the rotor, and a magnetic pole position detecting means which detects the position of the magnetic pole of the rotating rotor with respect to the stator based on the detection signal of the voltage detecting circuit. The driving pulse generating means controls the outputting timing of the driving pulse signal based on the detection signal of the pole position detecting means used. The magnetic pole position detecting means stops the output of the driving pulse signal based on the signal detected by means of the voltage detecting circuit while the driving pulse signal is outputted and, at the same time, causes a driving pulse signal whose phase is opposite to that of the driving pulse signal to be outputted. The phase locked driving type motor is started reliably, accelerated quicky, and rotated stably. A higher-performance motor driving circuit can be realized by combining embodiments. Moreover, high-speed high-torque rotation of the motor is realized with a simple system constitution without changing the structure of a conventional flat type bipolar motor.
    • 锁定驱动型电动机可靠地启动并稳定旋转。 电动机驱动装置设置有至少由双极性定子构成的步进电动机,具有双极型永久磁铁的转子和与该定子磁耦合的驱动线圈,驱动脉冲发生装置输出驱动脉冲信号 步进电机,根据来自驱动脉冲发生装置的信号向驱动线圈提供驱动电流的驱动电路,检测由转子旋转产生的反电动势电压的电压检测电路和磁极位置检测 基于电压检测电路的检测信号来检测旋转转子的磁极相对于定子的位置的装置。 驱动脉冲发生装置根据所使用的磁极位置检测装置的检测信号来控制驱动脉冲信号的输出定时。 磁极位置检测装置在输出驱动脉冲信号的同时基于通过电压检测电路检测到的信号来停止驱动脉冲信号的输出,同时使相位相反的驱动脉冲信号 驱动脉冲信号的输出。 锁定驱动型电动机可靠地启动,加速快速并且稳定地旋转。 可以通过组合实施例来实现更高性能的电动机驱动电路。 此外,通过简单的系统结构实现电动机的高速高扭矩旋转,而不改变传统平面型双极电动机的结构。
    • 2. 发明申请
    • STEPPER MOTOR RAMP GENERATION
    • 步进电动机发电
    • WO1992020143A1
    • 1992-11-12
    • PCT/US1992003744
    • 1992-05-06
    • EASTMAN KODAK COMPANY
    • EASTMAN KODAK COMPANYEVANS, Stuart, GerardIRWIN, William, George
    • H02P08/00
    • H02P8/04
    • A method for generating stepper motor ramps and analyzing the motor torque required compared with the motor torque available wherein the generated ramp will accelerate the motor as fast as possible while maintaining a user settable torque safety factor and/or safety margin. The method uses the minimum available stepper motor torque at the current motor speed to ultimately compute the maximum acceleration that can be used, uses the maximum acceleration to generate the next motor step time and hence the next motor velocity, computes the next velocity from the desired acceleration and the previous velocity and takes advantage of the fact that friction will help during deceleration of the motor. In particular, the method comprises the steps of determining the minimum available torque using the current motor velocity and the torque-speed characteristic of the motor, applying to the available torque a safety factor and then a safety margin to determine maximum usable torque wherein the safety factor is derived from motor information and the safety margin is derived from system information, calculating the maximum acceleration using the friction and moment of inertia of the system and the maximum usable motor torque, calculating the time duration of the next step for advancing the motor, repeating the foregoing steps to determine all steps in the ramps, and utilizing the generated motor ramps in advancing the stepper motor. The generated ramp always exploits the full drive capability of the stepper motor, and it provides a relatively constant margin between available torque and required torque during both acceleration and deceleration of the motor.
    • 3. 发明申请
    • IMPROVEMENTS IN OR RELATING TO THE CONTROL OF STEPPING MOTORS
    • 改进或相关于步进电机的控制
    • WO1991013490A1
    • 1991-09-05
    • PCT/GB1991000285
    • 1991-02-22
    • NATIONAL RESEARCH DEVELOPMENT CORPORATIONDANBURY, Richard, Neil
    • NATIONAL RESEARCH DEVELOPMENT CORPORATION
    • H02P08/00
    • H02P8/14
    • A control circuit for a stepping motor (20) comprises a transistorised drive circuit (122) having a plurality of switching positions in each of which the drive circuit (122) is arranged to supply current to selected windings of the stepping motor in selected directions. A sequencer (130) is arranged to apply control signals to the drive circuit (122) to change the switching positions in sequence. An encoder (128) provides a train of pulses representative of the speed and position of the motor (120). An excitation controller (134) is arranged to receive the encoder pulses and to generate in response thereto change excitation signals for causing change of the switching positions, and change direction signals for determining the direction in which the sequence of switching positions is changed. The provision of both change excitation signals and direction signals offers maximum flexibility, because it enables, for example, speedy reversal of the torque of the stepping motor (120) by causing the sequencer (130) to step backwardly through the switching sequence. The change excitation signals are generated by said excitation controller (134) in a manner which enables the switching angle of the stepping motor to be varied substantially without limit so that complete control of the stepping motor is available.
    • 用于步进电动机(20)的控制电路包括具有多个开关位置的晶体管驱动电路(122),驱动电路(122)中的每一个被布置成沿选定方向向步进电机的选定绕组提供电流。 定序器(130)被布置成向驱动电路(122)施加控制信号以依次改变开关位置。 编码器(128)提供代表电动机(120)的速度和位置的脉冲串。 励磁控制器(134)被布置成接收编码器脉冲并响应于此产生改变用于引起切换位置变化的激励信号,并且改变用于确定切换位置序列改变方向的方向信号。 提供两个改变激励信号和方向信号都提供了最大的灵活性,这是因为它使例如通过使定序器(130)向后退过切换顺序来快速地反转步进马达(120)的转矩。 改变激励信号由所述励磁控制器(134)以能够使步进电机的切换角度基本上无限制地变化的方式产生,从而可以完全控制步进电动机。
    • 4. 发明申请
    • QUIET DRIVE CONTROL AND INTERFACE APPARATUS
    • QUIET驱动控制和接口设备
    • WO1995014328A1
    • 1995-05-26
    • PCT/US1994013086
    • 1994-11-14
    • ADMOTION CORPORATION
    • ADMOTION CORPORATIONPEETERS, Bradford, D.
    • H02P08/00
    • G09F11/00
    • A drive control and interface apparatus housed within an advertising display for driving a stepper motor (46) coupled to a display device (32) to sequentially display a plurality of images. The drive control and interface apparatus include a microprocessor having program memory connected to the motor (46) through a motor driver (42). A drive control program operates the microprocessor to drive the stepper motor to change the image displayed after a corresponding predetermined period of time. The program includes drive routines for fast and slow image changes that drive the stepper motor (46) to minimize resonance. A control interface connects to the microprocessor. The program is responsive to the control interface to permit manual sequencing of the display and user selection of the corresponding display times for each image.
    • 一种驱动控制和接口装置,其容纳在广告显示器内,用于驱动与显示装置(32)耦合的步进电机(46),以顺序显示多个图像。 驱动控制和接口装置包括具有通过马达驱动器(42)连接到马达(46)的程序存储器的微处理器。 驱动控制程序操作微处理器以驱动步进马达来改变在相应的预定时间段之后显示的图像。 该程序包括用于驱动步进电机(46)以最小化共振的快速和慢速图像变化的驱动程序。 控制接口连接到微处理器。 该程序响应于控制界面,允许手动对显示进行排序和用户选择每个图像的相应显示时间。
    • 8. 发明申请
    • APPARATUS FOR CONTROLLING LOAD NUMERICALLY
    • 用于数字控制的装置
    • WO1992016047A1
    • 1992-09-17
    • PCT/JP1992000217
    • 1992-02-27
    • KABUSHIKIGAISYA SEKOGIKENBAHN, Itsuki
    • KABUSHIKIGAISYA SEKOGIKEN
    • H02P08/00
    • H02P25/089
    • An apparatus for performing numerical control of a load at a high speed efficiently. The apparatus drives a linked load, as a DC motor, in the initial period of the movement of the load, and then, generates a braking torque to decelerate the load. In the final period of the movement of the load, the apparatus drives it, as a stepper motor, by electrical pulses of a predetermined number. Required numerical control of the load is thus performed. Also, in the case that current application to armature coils is interrupted when driving the foregoing motor, magnetic energies stored in the armature coils are not fed back regeneratively to the power source, blocked by diodes for preventing reverse currents, and consequently flow into capacitors of small capacitance values to change them. Thereby, the voltages of the capacitors are kept high, and the currents are reduced rapidly. After the lapse of a predetermined time, when the current application to the armature coils is resumed, the high voltages of the capacitors cause the currents to rise rapidly. Therefore, the reverse and reduction of the torque of the motor are prevented, and the load can be moved at a high speed efficiently.