摘要 为保证小卫星激光通信用潜望式光端机在发射状态下的机构刚度,须采取锁紧结构对运动部件进行锁紧。针对传统锁紧机构火工品质量大、解锁有冲击与污染、不能重复解锁的缺点,设计了采用记忆合金驱动的锁紧结构,利用弹簧产生的弹力推动机构锁紧光端机运动部件,记忆合金丝作为驱动源带动锁紧机构实现解锁,并根据周扫式激光通信光端机结构特点,重点分析了锁紧结构锁紧力对整机刚度的影响,优化了锁紧力以保证整机刚度,减小解锁功耗。试验表明,采用本锁紧结构后光端机在发射方向上的谐振频率可达到75 Hz,满足设计要求。 In order to ensure the structural stiffness of the circular scanning optical terminal when it is launched,the locking structure must be adopted to lock the moving parts.For overcome the shortcomings of traditional initiating explosive device,such as high quality,impact of unlocking and non-repeatable locking,etc.A locking structure driven by memory alloy is designed.The spring-generated elastic driving mechanism is used to lock the moving parts of the optical terminal machine,and the memory wire is used as the driving source to drive the locking mechanism to realize unlocking,According to the structural characteristics of the optical end machine of the circumferential scanning laser communication,the influence of locking force on the stiffness of the complete machine is analyzed,and the locking force is optimized to ensure the stiffness of the complete machine and reduce the power consumption of unlocking.The experimental results show that the resonant frequency of the optical terminal in the transmitting direction can reach 75 Hz,which meets the design requirements.
出处 《长春理工大学学报:自然科学版》 2021年第2期37-42,共6页 Journal of Changchun University of Science and Technology(Natural Science Edition)
基金 国家自然科学基金(61701045) 国家重点研发计划项目(2018YFB1107600)。
关键词 激光通信 周扫式光端机 锁紧机构 记忆合金 laser communication circumferential scanning locking mechanism memory alloy
