Digital compensators for dynamic thrust measurement

The model of dynamic thrust measurement and typical methods for compensation are presented. Traditional analog compensator´s disadvantages consist of being dependent on components, and simply bilinear transformation would cause distortion. Several direct digital compensators, including direct inverse, deadbeat, two-beat-delay and non-deadbeat digital compensators, are compared, designed and novelly proposed in dynamic thrust measuring system. Analysis and experimental results demonstrate that the deadbeat and two-beat-delay digital compensators are the specific cases of the non-deadbeat digital compensator, and the latter one is superior in restraint on noise and disturbance. The processed results of actual data illustrate that non-dead-beat compensator can restrain overshoots and noises.