MEASUREMENT SYSTEM FOR DYNAMIC FRICTIONAL FORCE

摘要

PURPOSE:To take accurate measurement continuously by moving the movable part of a mechanism whose motion is to be measured and a load applying mechanism at the same speed by using individual driving sources and measuring a force which operate in the motion direction of said movable part simultaneously, and calculating the dynamic frictional force. CONSTITUTION:A load is placed on the movable part 2 of the mechanism whose motion is to be measured as shown by a large arrow to prepare for measuring operation, and the load is applied from the output shaft of a DC motor 8 with a speed reduction gear to the movable part 2 through an arm 9 and a press-contacting roller 10. The motor uses a general permanent magnet type DC motor and the generated torque is accurately proportional to the motor current, so the load is set accurately with the motor current. The dynamic frictional force puts said movable part 2 in unidirectional, constant-speed motion while the specific load is applied and the movable part 12 of the load applying mechanism is moved at the same speed following up it, thereby measuring the force which operates on the movable part 2 of the object mechanism.