Dynamic performance design and analysis of hybrid excited linear actuator for on-off valve

作者：Tan, Cao; Chang, Siqin^*; Liu, Liang

来源：International Journal of Applied Electromagnetics and Mechanics, 2017, 54(2): 199-209.

DOI：10.3233/JAE-160069

• Hybrid excited linear actuator
• dynamic characteristic
• hot-gas valve
• optimal design
• loss

An optimal design procedure based on the dynamic characteristics of a hybrid excited linear actuator (HELA) constrained in a specific volume has been developed. For achieving fast response and low power consumption, two electrical parameters including excitation duration and coil diameter were optimized. Three models, including a loss model, an electromagnetic model, and a mechanical model were constructed, and optimal design calculation was performed by using 3D finite element method (FEM). According to the results, a hot-gas valve directly driven by HELA was manufactured and dynamic experiments were performed. The results show the experimental dates agree well with simulating calculation. The open and the closed response time is 2.3 ms and 3.5 ms separately, when the total mass of the HELA is 100 g. Moreover, the prototype's cycle loss is 0.7 J independent of the operation frequency. The experiments show that the design procedure is sufficiently accurate, which validate that the prototype has characteristics of fast response and low power consumption. Besides, the eddy current loss is 44.9% of the total loss, and the eddy current increases the response time over 8.6 percent according to quantitative analysis, which validate the necessity of the coupling model.

• 出版日期2017
• 单位南京理工大学