| 摘要 |
<p>The rotary electromechanical activator includes an electric motor having its shaft connected to a moving part, and a brake holding the moving part still when the motor is not being supplied. The motor shaft (2) is coupled to the shaft of the moving part (5) by two adjacent plates forming an electromagnetic friction drive. The driving and the driven plates (3, 4) are of ferromagnetic material. A coul (7) may be electrically excited to create a magnetic field to pull the driven plate (4) against the driving plate (3). A permanent magnet (9) provides the brake.</p> |
