Suspension System

As the movement of the armature is based on magnetism, no physical contact is established with the shaker body. The armature is freely suspended in the air and without any suspension or auto centering system, it will sit at the bottom of the shaker. To achieve full displacement of the shaker, its armature should be centered. At Sdyn, we have multiple designs to center the armature based on customer specifications and test requirements.

Our standard design utilises four sets of rolling struts spaced 90 degrees apart. Rubber bush and cam bolt is assembled inside each rolling strut to create mechanical stiffness which keeps the armature centered. Our long stroke design utilises four sets of rockers spaced 90 degrees apart. Rocker offers no mechanical stiffness and the armature is centered via DC from the amplifier. Both designs also utilise an internal load support bearing along with an air diaphragm to assist in the centering process with heavy load mounted on the armature.