Abstract: (9198 Views)
The identification of sensor runout in non-contact proximity sensors of an active magnetic bearing test rig is presented in this paper. First, the dynamic equations of the magnetic bearing together with the power amplifiers are derived and parameters of the experimental test rig are identified. Then, to stabilize the system, the LQR controller and a proportional observer are utilized. Experimental results show that the conventional proportional observer amplifies the sensor runout and deviates the system from origin. Therefore, a proportional integral observer is used to identify the sensor runout and implemented on the laboratory model of the active magnetic bearing. The experimental results show that the proportional integral observer can effectively identify the sensor runout and eliminate its effect on the system response.
Type of Article:
Research paper |
Subject:
Special Received: 2014/06/20 | Accepted: 2014/06/20 | Published: 2014/06/20