Computer program products automatically package an object, such as, for example, whole muscle meat pieces, in a covering material, such as, for example, netting using actuators for operating barrier doors, pushers, and locks. The wireless communication apparatus includes a frequency matched unit for compensating offset due to latency that may occur during communication between the wireless communication apparatus and external equipment. This is accomplished by repositioning the compression forces such that they are contradicted by a combination of the meshing spring force and the frame reaction of the engine starter. An instability selecting unit selects the instability estimated by the first driving instability determining unit when the learning is completed and selects the instability estimated by the second driving instability determining unit when the learning is not completed. The measured electrical characteristics are used to identify the location of the alignment structure by identifying a difference between the measured electrical characteristic at pairs of the plurality of positions. The control unit is operatively connected to the contents sensor unit.