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对NiMnCa合金的磁控形状记忆特性进行理论分析和实验研究,研制基于NiMnGa合金的自传感执行器实验模型,试验模型采用双线圈结构,传感线圈和励磁线圈处于同一磁路,运用空分复用原理分离信号,在主动消振实验中取得了较理想的实验结果。建立NiMnCa合金自传感执行器的数学模型,模型直观反映了传感参数、控制参数和NiMnGa合金形状变化之间的关系,为自传感执行器的应用提供了理论根据。
The magnetron shape memory characteristics of NiMnCa alloy are theoretically analyzed and experimentally studied. The experimental model of self-sensing actuator based on NiMnGa alloy is developed. The experimental model uses double coil structure. The sensor coil and excitation coil are in the same magnetic circuit. Divided by the principle of signal multiplexing, active vibration reduction experiment has made more satisfactory results. The mathematical model of NiMnCa alloy self-sensing actuator was established. The model intuitively reflected the relationship between sensing parameters, control parameters and the shape change of NiMnGa alloy, which provided a theoretical basis for the application of self-sensing actuator.