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公开(公告)号：US5630417A
公开(公告)日：1997-05-20
申请号：US526040
申请日：1995-09-08
CPC分类号： A61B8/12 , A61B8/4245 , A61B8/445 , A61B8/4461 , G10K11/352
摘要： An apparatus and method for automatically controlling rotation of a transducer that is mechanically coupled to a motor are disclosed. The apparatus includes a motor controller coupled to the motor and a microprocessor. The motor controller includes a state-machine and an encoder. The microprocessor is coupled to the state-machine. Two methods for automatically controlling rotation of an ultrasound transducer are disclosed. The first method includes the steps of providing a microprocessor coupled to a motor controller, the motor controller comprising a state-machine and a speed setting circuit, and initializing the state-machine by providing a desired speed and a target position from the microprocessor. The first method further includes the step of automatically selecting the desired speed from the speed setting circuit in accordance with the initialized state-machine. The first method further includes rotating the ultrasound transducer at the selected speed. The second method for automatically controlling rotation of an ultrasound transducer includes the steps of storing a first speed, a second speed, a target position, and a preliminary target position in a state-machine, rotating the ultrasound transducer in a desired direction at the first speed, switching the rotation of the ultrasound transducer to the second speed when the ultrasound transducer reaches the preliminary target position, and stopping rotation of the ultrasound transducer when the ultrasound transducer reaches the target position.
摘要翻译： 公开了一种用于自动控制机械耦合到电动机的换能器的旋转的装置和方法。 该装置包括耦合到电动机和微处理器的电动机控制器。 电机控制器包括状态机和编码器。 微处理器与状态机相连。 公开了用于自动控制超声换能器旋转的两种方法。 第一种方法包括以下步骤：提供耦合到电动机控制器的微处理器，所述电动机控制器包括状态机和速度设定电路，以及通过从所述微处理器提供所需速度和目标位置来初始化所述状态机。 第一种方法还包括根据初始状态机从速度设定电路自动选择所需速度的步骤。 第一种方法还包括以选定的速度旋转超声换能器。 用于自动控制超声换能器旋转的第二种方法包括以下步骤：在状态机中存储第一速度，第二速度，目标位置和初步目标位置，在第一 速度，当超声波换能器达到预定目标位置时将超声换能器的旋转切换到第二速度，并且当超声换能器到达目标位置时停止超声换能器的旋转。
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公开(公告)号：US4916590A
公开(公告)日：1990-04-10
申请号：US376119
申请日：1989-07-06
申请人： Alan W. Petersen
发明人： Alan W. Petersen
摘要： A series resonant power supply is switched at a constant frequency above the audio range, in which a magnetic amplifier is used to control the magnitude of the output voltage. It can be run silently, while providing high power at relatively low cost. The power supply includes a full or half bridge rectifying circuit with first and second common terminals. A magnetic amplifier is coupled from the first common terminal to a second common terminal. The magnetic amplifier includes a first primary coil for conducting current from the first common terminal to the second terminal. A secondary coil for generating an output current, and a control coil receiving a control current are coupled with the first primary coil. A second primary coil is connected to conduct current from the second common terminal to the first common terminal. A second secondary coil and a second control coil are coupled with the second primary coil. The current is induced in the first and second secondary coils in response to current in the control coils, and current through the respective primary coils. An output circuit is coupled across the first and second secondary coils for converting the output of the magnetic amplifier to the regulated DC output.
摘要翻译： 串联谐振电源以高于音频范围的恒定频率切换，其中使用磁放大器来控制输出电压的大小。 它可以静音运行，同时以相对较低的成本提供高功率。 电源包括具有第一和第二公共端子的全桥或半桥整流电路。 磁放大器从第一公共端子耦合到第二公共端子。 磁放大器包括用于将电流从第一公共端子传导到第二端子的第一初级线圈。 用于产生输出电流的次级线圈和接收控制电流的控制线圈与第一初级线圈耦合。 连接第二初级线圈以将电流从第二公共端子传导到第一公共端子。 第二次级线圈和第二控制线圈与第二初级线圈耦合。 响应于控制线圈中的电流和通过相应的初级线圈的电流在第一和第二次级线圈中感应出电流。 输出电路跨越第一和第二次级线圈耦合，用于将磁放大器的输出转换成调节的DC输出。
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3.发明授权
公开(公告)号：US5720285A
公开(公告)日：1998-02-24
申请号：US572693
申请日：1995-12-14
申请人： Alan W. Petersen
发明人： Alan W. Petersen
CPC分类号： A61B8/12 , A61B8/4245 , A61B8/445 , A61B8/4461 , G10K11/355
摘要： A method and apparatus is provided for controlling rotation of an ultrasound transducer. In accordance with the method of the present invention, a user-operable actuator that is movable over a continuous range of positions and generates a first signal representing the position of the actuator is provided. The method includes the steps of transforming the first signal into a second signal representing a desired velocity. Preferably, the second signal is a nonlinear transform of the first signal. The method further provides for rotating the ultrasound transducer in accordance with the second signal. In accordance with the apparatus of the present invention, a probe having a control housing, an actuator that may be manually positioned within a range of positions, and a transducer housing coupled to the control housing, which transducer housing contains an ultrasound transducer that is rotatably mounted for scanning a plurality of planes in a body, is disclosed. The probe includes apparatus for controlling rotation of the ultrasound transducer. The control apparatus includes a motor, a motor controller coupled to the motor, and a gain block coupled between the actuator and the motor controller. The gain block preferably has a continuous transfer characteristic and produces, for each position of the actuator, a signal representing a desired velocity.
摘要翻译： 提供了一种用于控制超声换能器的旋转的方法和装置。 根据本发明的方法，提供一种用户可操作的致动器，其可在连续的位置范围内移动并产生表示致动器位置的第一信号。 该方法包括以下步骤：将第一信号转换成表示期望速度的第二信号。 优选地，第二信号是第一信号的非线性变换。 该方法还提供了根据第二信号旋转超声换能器。 根据本发明的装置，具有控制壳体，可手动定位在一定范围内的致动器的探头和耦合到控制壳体的换能器壳体，该换能器壳体包含可旋转的超声波换能器 被安装用于扫描身体中的多个平面。 探头包括用于控制超声换能器旋转的装置。 控制装置包括马达，耦合到马达的马达控制器和耦合在致动器和马达控制器之间的增益块。 增益块优选地具有连续传递特性，并且对于致动器的每个位置产生表示期望速度的信号。
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公开(公告)号：US6031439A
公开(公告)日：2000-02-29
申请号：US969931
申请日：1997-11-28
CPC分类号： A61B8/12 , A61B8/4245 , A61B8/4461 , A61B1/0052
摘要： A control device for converting a manual input into an electrical signal is provided. The control device includes a control button, a first magnet having a first predetermined polarity, a second magnet having a second predetermined polarity, and a hall-effect sensor located adjacent to the control button. The control button is mounted for pivotal displacement about a neutral position in accordance with the manual input. The first magnet and the second magnet are mounted to the control button. The polarity of the second magnet is opposite the polarity of the first magnet. The hall-effect sensor has an electrical input and an electrical output. The electrical signal produced by the control device may, for example, be used to control the velocity of a motor, which rotates an ultrasound transducer.
摘要翻译： 提供了一种用于将手动输入转换为电信号的控制装置。 控制装置包括控制按钮，具有第一预定极性的第一磁体，具有第二预定极性的第二磁体和位于控制按钮附近的霍尔效应传感器。 控制按钮被安装成根据手动输入绕中立位置进行枢转位移。 第一磁体和第二磁体安装在控制按钮上。 第二磁体的极性与第一磁体的极性相反。 霍尔效应传感器具有电气输入和电气输出。 由控制装置产生的电信号可以例如用于控制旋转超声换能器的马达的速度。
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