أرسل هذا في رسالة قصيرة: Force feedback control for active stabilization of synchronous whirl orbits in rotor systems with non-linear stiffness elements

 __   __    _____    __   _      ___              
 \ \\/ //  |  ___|| | || | ||   / _ \\    ____    
  \   //   | ||__   | '--' ||  | / \ ||  |    \\  
  / . \\   | ||__   | .--. ||  | \_/ ||  | [] ||  
 /_//\_\\  |_____|| |_|| |_||   \___//   |  __//  
 `-`  --`  `-----`  `-`  `-`    `---`    |_|`-`   
                                         `-`