Patent ID: 8295983

Claim:
A method of characterizing and controlling usage disturbances including at least one of shake and noise, in a dynamic system including at least one moving part of an image forming apparatus, the method allowing characterization in a usage environment and comprising: exciting, in the usage environment at least one usage disturbance including at least one of shake and noise, with an excitation force applied to the at least one moving part of the image forming apparatus, the excitation force sufficiently small so as not to cause at least one of mechanical drive train failure or skipping, losing position feedback signal, mechanical breakage or burn out of electrical components; measuring the usage disturbances due to interaction of the image forming apparatus with the usage environment in the dynamic system; and analyzing the measured usage disturbances in a frequency domain or a time domain; controlling the usage disturbances with a controller of the image forming apparatus of the dynamic system based on the analyzing.