IMPLEMENTING THE DIGITAL SPEED CONTROLLER TUNING OF A LABORATORY ROTARY HYDRAULIC SYSTEM

摘要

The objective is to give the students practical experience in tuning a digital speed controller for a rotary hydraulic system starting with the Ziegler-Nichols method. Digital controller basics and the tuning method are discussed. In using this method the critical tuning area of system operation must first be determined. This impacts the selection of fixed controller tuning parameters which are used for command changes, load changes and startup. For this system, as long as transient startup is acceptable, it was concluded that the settings should be selected for the more restrictive minimum speed operating condition. The resulting operation at higher operating speeds is then somewhat less responsive than the selected tuning point.