基于软件校准的短波发射机功率控制系统设计

Design of Shortwave Transmitter Power Control System Based on Software Calibration

为提升短波发射机功率的稳定性,提出基于软件校准设计短波发射机功率控制系统;该系统借鉴MVC设计模式搭建基础框架;将功率计与短波发射机相连,实时采集工作状态下的短波发射机功率数据,通过信号处理器实施处理后并存储;将数据发送到控制器,通过控制器校准短波发射机功率与预期之间的偏差,以偏差量为输入,利用改进PID运算得出控制量,生成控制命令;通过输入输出信号接口板输出命令,控制驱动装置调节短波发射机运行参数,实现功率控制;结果表明:与对比系统相比,所设计系统应用100 s内短波发射机的功率变化曲线与预期曲线之间的拟合优度指数更接近于1,证明本系统控制表现较好,更能维持短波发射机功率稳定,达到了研究目标。

In order to improve the stability of shortwave transmitter power,a shortwave transmitter power control system based on software calibration is proposed.The system draws on the model,view and controller(MVC)design mode to build basic framework,connects the power meter with the shortwave transmitter,collects the power data of the shortwave transmitter under the working conditions in real time,processes and stores it through the signal processor,sends the data to the controller.The device calibrates the deviation between the power of the short-wave transmitter and the expectation through the control,takes the deviation as the input,uses the improved PID operation to obtain the control amount,and generates the control command;through the input and output signal interface board to output the command,the driving device is controlled to adjust the operating parameters of the short-wave transmitter and achieve power control.The results show that,compared with the comparison system,the goodness-of-fit index between the power variation curve of the short-wave transmitter and the expected curve within 100 s is closer to 1.0 in the designed system,which proves that the system has better control performance and can maintain the short-wave,the transmitter power is stable and the research objective is achieved.