Sindler Yuri, Lineykin Simon
Department of Mechanical Engineering and Mechatronics, Ariel University, Ariel 4077625, Israel.
Sensors (Basel). 2022 Jul 24;22(15):5514. doi: 10.3390/s22155514.
Modeling the non-electrical processes by equivalent electrical circuits is a widely known and successfully used technique in research and development. Although finite element methods software development has supplanted electrical analogy techniques due to greater accuracy and intuitiveness in recent decades, the modeling of physical processes based on analogies has several advantages in some cases. Representation of physical processes in the form of lumped circuits and graphs allows researchers to estimate the system with an alternative view, use standardized methods for solving electrical circuits for non-electrical systems, and, most importantly, allows us to use electrical circuit simulators with their unique capabilities. Of particular interest for using the analogy technique are systems that include electronic components along with components belonging to other physical domains, such as mechanical, thermal, magnetic, and others. A solid-state magnetoelectric (МЕ) sensor equipped with a charge amplifier is proposed in this study as an example of analysis using the equivalent electrical circuit and simulating these circuits using SPICE-based circuit simulators. Sensor analysis is conducted with an emphasis on noise budgeting and optimizing the sensor's signal-to-noise ratio and resolution. In addition, the steady state, the phasor, and transient types of analyses were employed to study the static and dynamic behavior of the system. Validation of the model using analytical calculations and comparison with experimental data demonstrated superior results.
通过等效电路对非电过程进行建模是研发中一种广为人知且成功应用的技术。尽管近几十年来，由于有限元方法软件开发在准确性和直观性方面更具优势，已逐渐取代了电类比技术，但在某些情况下，基于类比的物理过程建模仍具有若干优势。以集总电路和图形的形式表示物理过程，使研究人员能够从另一个角度评估系统，将求解电路的标准化方法用于非电系统，而且最重要的是，能让我们使用具有独特功能的电路模拟器。对于使用类比技术而言，特别值得关注的是那些既包含电子元件又包含属于其他物理领域（如机械、热、磁等）元件的系统。本研究提出了一种配备电荷放大器的固态磁电（МЕ）传感器，作为使用等效电路进行分析并使用基于SPICE的电路模拟器对这些电路进行仿真的示例。传感器分析重点在于噪声预算以及优化传感器的信噪比和分辨率。此外，还采用了稳态、相量和瞬态分析类型来研究系统的静态和动态行为。通过解析计算对模型进行验证并与实验数据进行比较，结果显示该模型具有优越性。
