为了进一步提高光电快速跟踪系统的性能, 需要根据系统控制精度的指标对被控对象提出要求, 以指导机械加工, 即作为被控对象的电机和反射镜的传递函数的结构已知但参数未知。针对此光电快速跟踪系统的水平方向高精度快速跟踪测量, 本文建立了系统模型, 提出了触发引导, 目标的快速捕获, 复合控制三个控制步骤和策略, 通过二分法整定了系统参数并确定了对机械结构的参数要求和负载的谐振频率要求, 以满足系统的最大跟踪误差。实验结果表明: 本文控制策略可使最大跟踪误差小于 0.086°, 调节时间小于 0.04 s, 满足了快速跟踪测量系统快速性、高精度的要求, 有效地保证了控制的可实现性。

To improve the tracking performance of the O-E high speed tracking system, it is necessary to put forward the requirement of mechanical properties of the controlled plant according to system’s control accuracy index, which can be used to do mechanical working to make sure that the design can be realized. Specifically, that is to say the structure of the motor and reflection mirror’s transfer function is known, but the parameters keep unknown. Aiming at the request of horizontal high speed and accuracy measurement of the O-E high speed tracking system, first, the system’s mathematic model has been established. Second, some strategies such as trigger guiding, two closed loop control as well as compound control have been presented and applied into the system. With bisection method, the parameters of the motor and reflect mirror have been adjusted. Third, the requirement of the mechanic structure parameter as well as the load resonance frequency have been confirmed to make sure the system can meet the tracking accuracy. Experimental results indicate that the maximum tracking error can be limited to less than 0.086° and the regulator time can be 0.04 s which manifests that the design can satisfy the system requirements of swiftness and high accuracy, and the design also ensures the realization of the control.