公开(公告)号：US5265146A

公开(公告)日：1993-11-23

申请号：US976765

申请日：1992-11-16

申请人： William F. Wirth ,  Gerald K. Flakas

发明人： William F. Wirth ,  Gerald K. Flakas

IPC分类号： H05G1/66

CPC分类号： H05G1/66

摘要： An x-ray tube rotor controller uses the main high voltage inverters for acceleration and speed maintenance. The rotor controller includes a DC voltage source, and a rotary anode drive circuit including a rotary anode motor designed as a two-winding induction motor. The rotor controller comprises first and second inverter circuits which may be either half bridge or full bridge arrangements, the first and second inverter circuits for accelerating the anode, and further for generating high voltage for the x-ray tube. Electronic switching means allow for instantaneous electronic switching of the output of the first and second inverter circuits between the high voltage power supply and the anode motor. A phase switching capacitor may be used to provide the other phase of the motor.

摘要翻译： X射线管转子控制器使用主高压逆变器进行加速和速度维护。 转子控制器包括直流电压源和包括设计为双绕组感应电动机的旋转阳极电动机的旋转阳极驱动电路。 转子控制器包括可以是半桥或全桥布置的第一和第二反相器电路，用于加速阳极的第一和第二反相器电路，并且还用于产生用于X射线管的高电压。 电子开关装置允许在高压电源和阳极电动机之间的第一和第二逆变器电路的输出的瞬时电子切换。 可以使用相位切换电容器来提供电动机的另一相。

公开(公告)号：US4930146A

公开(公告)日：1990-05-29

申请号：US377353

申请日：1989-07-10

申请人： Gerald K. Flakas ,  Harold J. Dalman

发明人： Gerald K. Flakas ,  Harold J. Dalman

IPC分类号： H05G1/34

CPC分类号： H05G1/34

摘要： The tube current in an X-ray tube is controlled by a closed loop control circuit in which a tube current feedback signal is used to control X-ray tube filament current. The gain of the feedback loop is maintained substantially constant over a wide range of tube currents by inserting a signal proportional to the reciprocal of the tube current command.

公开(公告)号：US4697661A

公开(公告)日：1987-10-06

申请号：US885484

申请日：1986-07-14

申请人： Michael J. Pajerski ,  Steven J. Gray ,  Gerald K. Flakas ,  Dennis J. Cotic

发明人： Michael J. Pajerski ,  Steven J. Gray ,  Gerald K. Flakas ,  Dennis J. Cotic

IPC分类号： A61B6/00 ,  B60L15/00 ,  B62D11/04

CPC分类号： A61B6/4482 ,  A61B6/4405 ,  B62D11/04 ,  Y10T74/20012

摘要： A control system for providing power to independently driven wheels of a power driven cart for transporting medical diagnostic equipment. A manually engageable handle is mounted to the cart in a position allowing a person to exert a manual force on the handle in a direction in which it is desired for the cart to move. Force sensors are coupled to the handle to sense the manual force applied to it in a plane parallel to the plane on which the cart is to be moved. The force sensors provide signals representative of the magnitude and direction of the manual force applied to the handle in forward, reverse and turning directions. Electronic circuits are coupled to the force sensors for providing control signals to motors driving the wheels of the cart for independently controlling direction and velocity of movement of the cart.

摘要翻译： 一种用于向用于运送医疗诊断设备的动力驱动推车（10）的独立驱动的车轮（12,14）提供动力的控制系统。 可手动接合的手柄（16）被安装到推车上，该位置允许人在手推车所需的方向上对手柄施加手动力。 力传感器（38,40）联接到手柄以感测在平行于移动推车的平面的平面中施加到其上的手动力。 力传感器（38,40）提供表示在向前，反向和转动方向上施加到手柄的手动力的大小和方向的信号。 电子电路（26,28）耦合到力传感器，用于向驱动车辆的车轮的马达提供控制信号，以独立地控制推车的运动方向和速度。