In force measurement applications, a piezoelectric force sensor is one of the most popular sensors due to its advantages of low cost, linear response, and high sensitivity. Piezoelectric sensors effectively convert dynamic forces to electrical signals by the direct piezoelectric effect, but their use has been limited in measuring static forces due to the easily neutralized surface charge. To overcome this shortcoming, several static (either pure static or quasistatic) force sensing techniques using piezoelectric materials have been developed utilizing several unique parameters rather than just the surface charge produced by an applied force. The parameters for static force measurement include the resonance frequency, electrical impedance, decay time constant, and capacitance. In this review, we discuss the detailed mechanism of these piezoelectric-type, static force sensing methods that use more than the direct piezoelectric effect. We also highlight the challenges and potentials of each method for static force sensing applications.

中文翻译：

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使用压电传感器进行静态力测量

在力测量应用中，压电力传感器由于其低成本，线性响应和高灵敏度的优点而成为最受欢迎的传感器之一。压电传感器通过直接的压电效应将动态力有效地转换为电信号，但是由于易于中和表面电荷，因此在测量静力方面的应用受到了限制。为了克服该缺点，已经开发了利用压电材料的几种静态（纯静态或准静态）力感测技术，该技术利用了几个独特的参数，而不仅仅是施加力产生的表面电荷。用于静态力测量的参数包括谐振频率，电阻抗，衰减时间常数和电容。在这篇评论中，我们将讨论这些压电型静态力传感方法的详细机理，这些方法比直接压电效应更多地使用。我们还将重点介绍每种方法在静态力感测应用中的挑战和潜力。