TNO变磁阻驱动器构成的大幅面变形镜的性能
Performance of Large-Format Deformable Mirrors Constructed with TNO Variable Reluctance Actuators
摘要：
在制造高效致动器方面的进步是构建下一代大尺寸可变形反射镜的技术。荷兰应用科学研究组织（TNO）开发了一种新型的可变磁阻致动器，与传统的音圈致动器相比，它需要大约80倍的功率来操作。我们提出了从实验室测试的TNO的57致动器的大幅面变形镜的性能结果，从测量的影响函数，线性，滞后，自然形状平坦化，致动器交叉耦合，蠕变，可重复性和致动器的寿命。我们测量的线性度为99.4 +- 0.33%，滞后为2.10 +- 0.23%，超过10微米的行程，这表明该技术具有很强的潜力，用于在天空自适应次镜（ASMs）。我们总结了未来实验室原型和ASM的计划，这些计划将进一步展示这项技术。
英文摘要：
Advancements in making high-efficiency actuators are an enabling technology for building the next generation of large-format deformable mirrors. The Netherlands Organization for Applied Scientific Research (TNO) has developed a new style of variable-reluctance actuator that requires approximately eighty times less power to operate as compared to the traditional style of voice-coil actuators. We present the performance results from laboratory testing of TNO's 57-actuator large-format deformable mirror from measuring the influence functions, linearity, hysteresis, natural shape flattening, actuator cross-coupling, creep, repeatability, and actuator lifetime. We measure a linearity of 99.4 +- 0.33% and hysteresis of 2.10 +- 0.23% over a stroke of 10 microns, indicating that this technology has strong potential for use in on-sky adaptive secondary mirrors (ASMs). We summarize plans for future lab prototypes and ASMs that will further demonstrate this technology.
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