A motor drive control device and motor startup method prevent startup noise and reduce startup time. This series includes a pair of abutting rotatable eccentric rings, which are rotated to adjust the relative positions of the first cavity surface and the first core surface. The new algorithm can be used to efficiently find solutions to the treewidth problem that has applications in areas such as diagnosis using probabilistic inferences. An electromagnetic radiation source operatively connected to the control system of the enteral feeding pump emits an electromagnetic radiation signal in a direction for striking the safety interlock device of the feeding set.