摘要
为了提高以加速度计发展起来的非陀螺寻北系统中转台的稳速精度,深入研究了高精度速度稳定控制中的锁相环路控制法在电机稳速控制中的应用,并指出变参数软件锁相环控制是一种获得高精度稳速控制的可行办法.针对锁相控制中稳速系统的技术要求,建立了系统的数学模型,并用SIMULINK对软件锁相环路控制法进行了频率阶跃响应仿真.从仿真结果看出,当10 MHz的载波信号产生100 kHz的频率阶跃干扰时,软件锁相环路控制系统在1.5×10-5s重新进入锁相同步状态,可以满足高精度快速非陀螺寻北稳速控制系统的要求.
In order to improve the speed stability precision of turntables ofnongyroscopic north seeking systems based on accelerometers, the speed phase locked loop（PLL）, a kind of high precision speed stability control method, is applied to the electromotor control. It is pointed out that the software PLL （SPLL） system with changeable parameters is a feasible means to acquire high precision speed stability. The mathematical model of the control system is founded according to the technology demand for speed stability control in the PLL. And the method is simulated on frequency step response by the SIMULINK software. The results show that, when a 10MHz carrier wave signal is interfered by a 100KHz step response, the SPLL system can be synchronously locked after 1.5×10^-5 s, which can meet the speed stability demand for fast nongyroscopic north seeking systems with high precision.
出处
《测试技术学报》
2007年第5期414-417,共4页
Journal of Test and Measurement Technology
基金
中国科学院二期创新基金资助项目(C02N021)
关键词
寻北
稳速控制
锁相环
数学模型
仿真
north-seeking
speed stability control
phase locked loop （PLL）
mathematical model
simulation
