Transfer Force Measurement of Electric Compressor with Low-Profile 3-Axis Force Sensor

Abstract:

An electric compressor generates a mechanical vibration that is transmitted from the engine to the vehicle body and then the vibration of the vehicle body creates a vehicle interior noise. The noise can be calculated by a transfer force from the electric compressor to the engine and transfer characteristics from the electric compressor to the vehicle cabin. The transfer force can be measured with a force sensor installed between the electric compressor and the engine. However， the force sensor interferes with other components and changes the vibration mode of the electric compressor. Therefore， the conventional force sensor cannot measure the transfer force of the actual phenomenon. In this paper， a new low-profile 3-axis force sensor was developed by use of piezoelectric quartz crystals， which achieved measuring the transfer force in as close to the actual phenomenon as possible.