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Mobile aggregate crushers operate with wireless communication for plant-wide operability, controls and monitoring. Mobile crushing plants typically have relatively long material transportation delays making processes rather dead time dominant. Consequently, plant-wide controls rely on single predictive PI controllers designed for compensating process dead times. However, due to wireless communication in harsh outdoor conditions, measurements may not always be available for process controls. To solve this, this paper suggests an event-based control strategy for predictive PI controllers. |
