Performance of a Dynamically Compensated Load Cell Force Measurement System

摘要

The report presents a theoretical description and an experimental evaluation of a dynamically compensated load cell force measurement system. Electronic compensation techniques were used to eliminate load cell signal distortions caused by large amplitude load cell base (thrust butt) motions and other structural transient responses of the force measurement device. The force measurement device was subjected to severe impact forces up to 4600 lb peak force with force rise times of 300 microsec and total force durations of 900 microsec. Load cell base motions caused by these impact forces approached 0.25 in., and the load cell signal was badly distorted. However, application of the compensation techniques eliminated these distortions, and dynamic force measurements could then be made regardless of load cell base motion and the structural response of the rest of the force measurement device. (Author)