Sensorless Control for Linear Electromagnetic Actuators with Permanent Magnet Mover

这个项目的目的是无传感器控制的线性电磁执行器，其中有永磁体作为驱动器。这种类型的致动器在定子中有两个线圈串联在一起，其中电流方向相反，而驱动器是夹在铁磁材料的两个极鞋之间的圆盘形永磁体。由于其双向受力特性，这些致动器非常有利于位置控制应用。由于安装位置传感器的额外成本和复杂性，本项目的目的是对这些执行器进行位置估计和控制。通过估计执行器的位置相关磁特性来估计位置。由于磁特性的固有对称性，为了实现全行程范围内的位置估计，至少需要结合两种估计方法，这就产生了一个复杂而有趣的研究问题。

The aim of this project is sensorless control for linear electromagnetic actuators which have permanent magnets as mover. This type of actuators houses two coils in the stator connected in series where the currents have opposite directions and the mover is a disc shaped permanent magnet sandwiched between two pole shoes of ferromagnetic material. Due to their bidirectional force characteristic, these actuators are very beneficial for position control applications. Because of the additional cost and complexity of installing position sensors, the aim of this project is position estimation and control for these actuators. The position is estimated by estimating the position dependent magnetic properties of the actuator. Due to an inherent symmetry in the magnetic characteristics, at least two estimation methods would have to be combined in order to achieve position estimation in the full stroke range, yielding a complex and interesting research problem to solve.