ABSTRACT
D. C. Miller introduced a sudden discrete change in the magnitude and/or polarity of the gain of a velocity control system. There are many books on experimental design in psychology. The strategies they suggest are often shaped by the statistical procedures used to analyze the data. Young and Stark nullified the closed-loop relation by electronically measuring the angle of the eyes, and then moving the target the same number of degrees as the eyes rotated. External perturbations will have a much larger effect on the performance of a system that is almost unstable in comparison with a system that has larger stability margins. Detailed considerations of the relation between force and motion also arise in the design of haptic displays to simulate contact with the surface of an object in virtual environments. Long-range anticipation and planning can be augmented by introducing longterm predictive displays that present the extrapolated trajectory of the system.
