Abstract
This paper proposes the co-axis non-contact impedance sensor composed of a laser displacement sensor and air force supply nozzle whose axes are coincident with each other, while conventional sensors have some intersection angle between two. One of key components is the high-speed solenoid valve, by which we can achieve the response of 1[msec] standing-up time. Utilization of such a high-speed valve enables us with the reference valve instead of measured one for force. The experimental results show nice coincidence between both experiments and estimations. Finally, we apply impedance estimation to foods for confirming the effectiveness of the proposed sensor.
