“Instantaneous Trucks” vs “TUM Trucks”
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Note that the way this is done in APS is to rotate through the trucks in a round-robin fashion. Dispatch Enabled: In each step the trucks will be used , going through the list in the order the trucks are specified . If in a steady steady state on a single loader a truck is exhausted, it will then go on to the next truck - and will use multiple truck types in the same instant (but it does not use the longer of the two cycle times).Dispatch Disabled: For each movement the loader does, a different truck will be usedin the Site Lists. In each steady state, the loader will choose a different truck from the previous steady state, thus approximating equal use while only using a single truck for each movement. |
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In each instant, APS will go through the diggers in order and assign trucks to diggers as it goes. If a specific route needs 5.2 trucks to haul at the maximum rate, and only has 2.3 left to assign, the digger will be derated. If there are no trucks available at all, the digger will be shut down.
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Dispatch Deadlocks
While this dispatch logic will work well in most circumstances, there are a few shortcomings. It is possible in some edge cases for APS to choose to do nothing even though if fully trucked it would do something. As an example, consider three diggers, EX1 on 62% Fe, EX2 mining 58% Fe, and EX3 on waste. There is also a strict Fe target of 60% on the crusher.
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