A method of vibration control of a magnetic coupling carrying a rotor in a fluid with large system variations

✍ Scribed by K. Nagaya; T. Aiba

• Book ID: 102977354
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 583 KB
• Volume: 183
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1995.0264

✦ Synopsis

This study is concerned with a magnetic coupling in which a shielding wall exists between coupling discs. The follower shaft carries a rotor in a fluid, and a driving torque given by a servomotor is transmitted to the follower passing through the shielding wall without contact. Analyses are presented of this coupling and a method of control for accelerating a shaft with a magnetic coupling carrying a rotor in a fluid. Since the coupling torque of the magnetic coupling is small, the transmission is broken when the inertia and friction forces become large. To maintain a safe connection of the coupling and prevent vibrations, a feedforward control method can be applied. But this method cannot be applied when the system varies. Hence, a method is presented of robust control which is applicable to a magnetic coupling with large system variations during acceleration. To validate the analysis and the control method, experimental tests have been carried out for some typical cases.