Abstract: The adaptive reference model algorithm uses a gain scheduling feature combined with a customized Least-Squares routine as an adaptive method for adjusting feedback control so as to account for variations in Transfer Function (G), thereby optimizing the effectiveness of the Active Vibration Control (AVC) System. The Least-Squares routine identifies the transfer function in a background process without interruption of closed loop vibration control. This identification approach is accomplished without intentional interrogation of the AVC actuators and without intentional vibration level changes. For this adaptive control logic, the dynamic relationship between AVC actuators and AVC sensors is represented by a mathematical model of Transfer Function (G). The mathematical model of Transfer Function (G) is continuously updated by the Least-Squares routine.

Abstract: The adaptive reference model algorithm uses a gain scheduling feature combined with a customized Least-Squares routine as an adaptive method for adjusting feedback control so as to account for variations in Transfer Function (G), thereby optimizing the effectiveness of the Active Vibration Control (AVC) System. The Least-Squares routine identifies the transfer function in a background process without interruption of closed loop vibration control. This identification approach is accomplished without intentional interrogation of the AVC actuators and without intentional vibration level changes. For this adaptive control logic, the dynamic relationship between AVC actuators and AVC sensors is represented by a mathematical model of Transfer Function (G). The mathematical model of Transfer Function (G) is continuously updated by the Least-Squares routine.

Abstract: A feeding syringe assembly includes a tube coupling a patient in fluid communication with a syringe to convey a formulated food solution to the patient to provide the patient with nutrition, the tube is connected to the patient through an insertion point, a stand, and a syringe support coupling the syringe to the stand holding the syringe at an elevated location with respect to the insertion point of the tube to allow a formulated food solution to gravity convey through the tube to the patient from the syringe.

Abstract: A mobile support system for toothbrushes and other oral hygiene products for which it is desirable to provide a temporary support system during travel is discussed. A base unit provides a stable base for the portable system. An expandable top section that is located over the base unit provides a number of openings into which the end of a toothbrush or other similarly shaped oral hygiene product may be placed. The openings are configured so as to provide a fit to the end of the toothbrush or other oral hygiene product that is sufficiently tight to keep the toothbrush or other oral hygiene product in an upright vertical position.

Abstract: A friction sled for measuring the co-efficient of friction between a friction pad mounted to the friction sled and test surface. The friction sled includes a load cell. A displacement force is applied to the friction sled and is measured by the friction cell. The friction cell is coupled to a controller that calculates the co-efficient of friction based on the displacement force and the weight of the friction sled.

Abstract: A surgical tool may include a cutting surface having fewer than about 10 pores per square centimeter that are greater than about 15 nanometers, 12 nanometers, 10 nanometers, 5 nanometers, or 5 angstroms in size. The tool may be made of a carbide, such as nickel binder tungsten carbide. The cutting surface may be prepared by polishing it until it has the desired surface porosity.