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Long-term continuous high-speed rotation provides the conditions for the occurrence of various failures of ventilation mill (VM) parts, such as the pulverizing fan. Pulverizing fan failure leads to dynamic unbalance of the rotating mechanism, which causes significant damage to the whole system, serious casualties, and high financial loss that may exceed the direct material damage considerably. This...
The ldquominus beamrdquo steering of the phased arrays deviates from the given direction because of the quantization phase in the digital phased shifter. This paper studied the theory of wide-beam and ldquominus beamrdquo and investigated the model of the particle swarm optimization method on the arrayspsila beam steering, and modified the range of the position and speed factor by the principle of...
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