To increase the test sensitivity, the resonance theory was introduced to the magnetoelastic method. After analyzing the correlation between the stress and the induced voltage, the resonance enhanced magnetoelastic (REME) method was proposed. A REME sensor with a low resonant frequency was made to carry out the experiment. The results showed that the resonant frequency, the resonant voltage, and the induced voltage could be used to measure stress, the test errors were 12.5%, 11.9%, and 9.5%, respectively. To measure stress, the excitation frequency should be close and lower than the resonant frequency. Enhanced by the resonance theory, the sensitivity of the REME method was 132.47% and 286.50% higher than that corresponding to the resonant voltage and the resonant frequency. The REME method has the advantages of low power supply and good dynamic response. Besides, using the resonance theory to enhance the measurement is applied to other coil-based sensors and methods.

为了提高测试灵敏度，将共振理论引入到磁弹性方法中。在分析了应力与感应电压之间的相关性后，提出了共振增强磁弹性（REME）方法。制作了具有低谐振频率的 REME 传感器来进行实验。结果表明，谐振频率、谐振电压和感应电压可用于测量应力，测试误差分别为12.5%、11.9%和9.5%。要测量应力，激励频率应接近并低于谐振频率。在共振理论的增强下，REME方法的灵敏度比共振电压和共振频率对应的灵敏度高132.47%和286.50%。REME法具有功耗低、动态响应好的优点。此外，使用共振理论来增强测量被应用于其他基于线圈的传感器和方法。