On self-excited vibrations in friction force measurement systems

摘要

Problems of friction force measurement under conditions of cosmic experiment on the orbit are considered. To increase the measurement accuracy, some arrangements should be made for preventing the onset of a self-vibration mode in mechanical systems with movable contact. Two self-vibration modes are studied. One of them occurs in the case of moderate relative slip velocities of the moving element and the indenter, and the other, in the case of small velocities. The existence and stability conditions are obtained in terms of the mass-elastic parameters of the contact pair.