摘要
由于步进电机驱动作用,太阳帆板在对日定向时卫星姿态稳定度易受影响。为了降低驱动机构对太阳帆板的激励作用,选用了扰动力矩较少的永磁同步电机作为驱动源进行闭环控制。由于太阳帆板的影响,系统带宽能力受限,使传统的PI控制器无法通过加大增益达到增加刚度的目的,从而减弱了对转速波动的抑制能力。为解决此问题,将超前滞后校正网络与模糊控制相结合提出了一种自动切换式模糊与校正网络的复合控制器。仿真结果表明,此复合控制方法能够很好地抑制驱动系统的扰动,提高了系统的速度精度和稳定度,并且响应速度较快,具有较好的动态性能。
The attitude of satellite is disturbed under the influence of step motor driving during the period of solar arrya pointing to the sun. In order to decrease the disturbance of SADA to solar array, the PMSM was chosen to be the drive sources. As for the influence of solar array, the bandwidth of the system is limited so as to the PI controller don＇t increase the gain to improve the anti-interference capacity and velocity stability of drive mechanics. And based on it, an automatic switch composite controller is brought forward that is composed of fuzzy controller and the lead-lag controller. Simulation results indicate that this method can primely refrain the disturbance of SADA with high respond speed and dynamic performance.
出处
《计算机仿真》
CSCD
北大核心
2016年第1期81-85,共5页
Computer Simulation
