Patent ID: 8079270
Filing Date: 2011-12-20
Classification: F16K,G01D,G01L

Abstract:
1. A method of measuring a force and a position at a linear actuating mechanism, comprising the steps of: detecting a change in an electrical characteristic of a first coil system for measuring a position of the linear actuating mechanism, wherein the change in the electrical characteristic is caused by moving of a first measurement member in the first coil system, detecting a change in an electrical characteristic of a second coil system for measuring a force acting at the linear actuating mechanism, wherein the change in the electrical characteristic is caused by moving of a second measurement member in the second coil system, wherein the first coil system comprises a first coil bobbin and a coil wound around the first coil bobbin, and the first measurement member, which is made of a metal, acts as a movable coil core in the first coil system, and the second coil system comprises a second coil bobbin and a coil wound around the second coil bobbin and the second measurement member, which is made of a metal, acts as movable coil core in the second coil system, the coil of the first coil system being separated from the coil of the second coil system, wherein the moving of the first measurement member is generated by a positional change of a linear shaft member of the linear actuating mechanism, and the moving of the second measurement member is generated by a force-displacement conversion via a deformation member.