Design and Control of Sensorless, Brushless, Linear Permanent Magnet Motors for Fluid Pumping

许多机器需要往复运动，并通过旋转运动的机械转换来实现。特别地，用于液体泵送和气体压缩的活塞通常由旋转电动机上的曲柄驱动。通过直线电机直接驱动活塞消除了机械转换的成本、重量、低效率和磨损。该项目将设计、建造和测试用于流体泵送的高效率管状直线永磁电机。此外，将开发智能电子控制器，以控制电机速度和反转，而无需电机中的传感器。最初的应用将是太阳能抽水和净化。

Many machines require reciprocating motion and achieve it by mechanical conversion of rotary motion. In particular, pistons for liquid pumping and gas compression are usually driven by a crank on a rotary electric motor. Driving the piston directly by a linear motor eliminates the cost, weight, inefficiency and wear of the mechanical conversion. This project will design, construct and test high efficiency, tubular, linear permanent magnet motors for fluid pumping. Further, an intelligent electronic controller will be developed to control the motor speed and reversals without sensors in the motor. Initial applications will be solar powered water pumping and purification.