In a motion effector for use in a virtual reality system, a plant is a target of control and for producing an output signal reflecting {HEAD ~ the actual movement} of {TAIL ~ a moving part} therein and a reference input provider provides a reference input signal which reflects a desired motion of the plant 
of
In a motion effector for use in a virtual reality system , a plant is a target of control and for producing an output signal reflecting { HEAD ~ the actual movement } of { TAIL ~ a moving part } therein and a reference input provider provides a reference input signal which reflects a desired motion of the plant
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH