Inertia Simulator Using Separately Excited DC Machine

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  • 他励直流機による慣性シミュレータ

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Flywheel is generaly used as an experimental power load equipment in the research field of machine control. However, flywheel is expensive and is not flexible for the requirement of the load parameter change. We constructed the inertia simulator which can generate an inertia moment hundred times bigger than the inherent inertia of the machine used in the simulator. We discussed the relation among the magnitude of the simulated inertia, the response time and the system stability. We showed that we can adjust the magnitude of the simulated inertia to any quantity, while keeping the response time of the inertia control loop to the specified constant value. Further, we showed that the inertia controller can be implemented easily using two potentiometers sharing the axls, and confirmed its effectiveness by the experiment. Finally, we proved that the above intuitive design method is equivalent to the model following control system using the disturbance torque observer and the inertia model.

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