An automatic balancing system with continuous operation is proposed, based on the use of correction masses which are continuously adjustable relative to the rotating system. A feedback control system positions these masses so as to counterbalance the inherent system unbalance. This application of feedback control principles reduces the dependence upon accuracy of calibration. A major advantage is that systems with time-varying unbalance conditions, due to wear or foreign material, can be rebalanced without interrupting operation. The application to single-mass and multiple-mass systems will be discussed, including the special considerations necessitated by operation near critical speeds.
Get full access to this article
View all access options for this article.
References
1.
‘Crankshaft balancing machine with electronic indication system, type CRH’, General Motors Research, Preliminary Instruction Manual, 1957 (No. 27), 36.
2.
Vande VegteJ.‘The interaction problem in multivariable feedback control systems as related to shaft balancing’, Ph.D. thesis, Department of Mechanical Engineering, University of Toronto, Toronto1963.
3.
BishopR. E. D.GladwellG. M. L.‘Vibration of rotating shafts supported in flexible bearings’, J. mech. Engng Sci.19591 (No. 3), 195.
