Modeling, design and control of a portable washing machine during the spinning cycle

This paper presents a simplified three-dimensional dynamic model of a horizontal-axis portable washing machine. This model is used to predict the verge of walking instability during the spinning cycle. Next, two novel methods of stabilization are presented. The design-based method reduces the instability and is cost effective. The control-based method eliminates the instability and vibrations and is associated with active balancing. The both methods satisfy the current trend towards portable, lightweight full-feature washing machines.