Russia says it will send a permanentobserver to the Organization of the Petroleum Exporting Countries, amid mounting concerns among producers about falling oil prices.
俄罗斯说，它将向石油输出国组织派遣一个常驻观察员。
2
A new sensorless control method for AC permanent magnet linear servo motor using a sliding mode observer is proposed in this paper.
提出了一种采用滑模观测器的交流永磁直线伺服电机无传感器控制的新方法。
3
A robust control scheme on the model of surface permanent magnet synchronous motor, composing of a sliding-mode controller and a sliding-mode observer, was presented in this paper.