太阳帆反射率参数连续调控装置设计

Design of a Reflectivity Continuous Control Device for Solar Sail Spacecraft

利用周期调相、PWM调控和差分放大技术生成正负交变、占空比可调的液晶薄膜驱动信号,设计并研制了一台基于液晶薄膜的反射率控制装置,可实现太阳帆面反射率参数的连续调控功能。地面实验结果表明,所研制装置可实现反射率参数的连续调控、简单的通断控制,提高了控制的灵活性和适用性。

By taking advantage of periodic phase modulation,PWM control and differential amplification technology,the positive-negative alternating and adjustable duty ratio signals required for liquid crystal membrane driving are generated.A reflectivity control device(RCD)based on liquid crystal membrane is designed and developed to continuously control sail reflectivity.The result of ground test shows that reflectivity control or simple on-off control can be achieved by using the developed RCD,and control flexibility and adaptability are both increased.