专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4868477A Method and apparatus for controlling torque and torque ripple in a variable reluctance motor 失效
标题翻译：用于控制可变磁阻电动机中的转矩和转矩波动的方法和装置
公开(公告)号：US4868477A
公开(公告)日：1989-09-19
申请号：US65399
申请日：1987-06-23
申请人： Frank J. Anderson , Peter Senak, Jr.
发明人： Frank J. Anderson , Peter Senak, Jr.
IPC分类号： H02P25/08
CPC分类号： H02P25/098
摘要： Apparatus for controlling torque and torque ripple in a variable reluctance motor uses a generated torque waveform for each phase of the number of phases associated with the motor and corresponds to an electrical current having a predetermined constant magnitude. The generated torque waveforms are utilized to provide a table of values representative of the electrical current magnitude at each of a number of sensed rotor angular positions. The values correspond to the torque produced by the motor when excited by an electric current having that value and the location of the value in a memory device are defined by the sensed angular position of the rotor and a desired torque command signal. Depending on the torque to be produced by the motor and the rotor position, the motor is excited with the value of current selected for one or a combination of phases to cause the motor to develop a desired torque which has a substantially flat and ripple-free response characteristic.
摘要翻译：用于控制可变磁阻电机中的转矩和转矩波动的装置使用与电动机相关联的相数的每相的产生的转矩波形，并且对应于具有预定的恒定幅度的电流。所产生的扭矩波形用于提供表示在多个感测的转子角位置的每一个处的电流幅度的值表。这些值对应于当由具有该值的电流激发时由电动机产生的扭矩，并且存储器件中的值的位置由感测的转子的角位置和期望的转矩指令信号定义。根据电动机和转子位置产生的转矩，电动机被激励，其电流值选择为一个或相位组合，使电动机产生一个所需的转矩，该转矩具有基本平坦和无纹波响应特性。

2. 发明授权

US5458566A Reservoir volume sensing systems for autologous blood recovery 失效
标题翻译：用于自体血液回收的储层体积检测系统
公开(公告)号：US5458566A
公开(公告)日：1995-10-17
申请号：US36430
申请日：1993-03-24
申请人： Russell L. Herrig , Joseph R. Plante , Frank J. Anderson , Paul M. Volpini , Norbert J. Comeau
发明人： Russell L. Herrig , Joseph R. Plante , Frank J. Anderson , Paul M. Volpini , Norbert J. Comeau
IPC分类号： A61M1/00 , A61M1/02 , A61M1/36 , G01F23/20 , G01F23/296 , A61M37/00
CPC分类号： A61M1/3627 , A61M1/3624 , G01F23/20 , G01F23/2962 , A61M1/0005 , A61M1/02 , A61M1/3693 , A61M2205/12 , A61M2205/3389 , A61M2205/3393 , A61M2209/084 , Y10S128/13
摘要： A volume sensor is described for automating an extracorporeal system used for the recovery and concentration of salvaged blood. The system includes a disposable plastic reservoir in which blood is collected from the surgical site and stored for processing. Volume is sensed in one embodiment by a strain gage device which is sensitive to vertical forces. In another embodiment volume is sensed by measuring the transit time of an ultrasonic pulse-echo signal generated by piezoelectric transducer.
摘要翻译：描述了一种体积传感器，用于自动化用于回收和浓缩被抢救血液的体外系统。该系统包括一次性塑料储存器，其中从手术部位收集血液并存储用于处理。在一个实施例中，通过对垂直力敏感的应变计装置感测体积。在另一个实施例中，通过测量由压电换能器产生的超声脉冲回波信号的传播时间来感测体积。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式