基于超薄型3轴力传感器的电动压缩机传递力测量

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

摘要:

汽车的电动压缩机在工作时，产生的机械振动通过发动机传递到车身从而产生车内噪声，噪声大小可以根据电动压缩机传递到发动机的传递力及其动力学特性进行推算。通常在电动压缩机与发动机连接处安装力传感器来测量传递力，然而，力传感器会干扰其他部件并使电动压缩机振动模式发生改变，从而在实际情况下可能无法实现传递力的测量。为此，基于石英晶体压电效应开发了新型超薄型3轴力传感器，实现了在接近实际情况下的电动压缩机传递力测量。

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.