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For maglev systems, current feedback and flux feedback are two common control methods. But there are many respective disadvantages. To reject the deficiencies of the two methods, a suspension control method based on both flux and current feedback was studied in the paper. To be aimed to a magnetic suspension system, the method of measuring the flux signaler was discussed, the hardware structure of...
In this paper, the performance of the traditional linear current-loop strategy of a single-point Electromagnetic suspension system is analyzed and its disadvantages in application is pointed out. It is concluded that the time constant of the resultant voltage-current subsystem varies as the changes of the suspension states, which will destroy the condition of implementing model reduction by the method...
Three models of a hybrid magnetic suspension system are separately built under the condition of no time-delay, time-delay of the signal of suspension gap and time-delay of arithmetic. To research on the influence of time-delay on the performance of the hybrid magnetic suspension system, relationship between the latent roots of the closed-loop system and time-delay, and the relationship between the...
The advantage of linear PID control is easy tuning, but its obvious disadvantage is the conflict between the stiffness and the performance when this approach is applied to magnetic suspension system. In order to enhance the stiffness of the system, the usual way of linear PID control is to increase the proportion feedback, but this approach is likely to degrade the performance of the system and even...
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