摘要
首先对转阀和驱动电机控制系统进行建模仿真,然后采用频移键控和相干解调方式仿真研究了连续波脉冲器的数据传输过程。通过仿真发现,当考虑通道噪声时,由于滤波环节性能已很难再改善,采用PI控制策略无法正确解调,故采用滑模控制改善电机动态性能,从而实现了正确解调。说明研究控制策略提高驱动电机动态性能有利于提高信号传输质量。这对于连续波脉冲器的实物制作具有重要的参考价值。但是并未考虑传输过程中出现的信号衰减和延迟等情况,仿真中仅用高斯噪声模拟了信道中的噪声,这些问题有待进一步地研究解决。
Firstly,the modeling and simulation of rotary valve and motor control system are carried out, and then the data transmission process of continuous wave pulser is simulated by frequency shift keying and coherent demodulation. The simulation results show that, when considering the channel noise, the filter performance is hardly improved,correct demodulation can not be obtained using the PI control strategy. Therefore ,the sliding mode control is adopted to improve the dynamic performance of the motor and to achieve correct demod- ulation. It is showed that the control strategy can improve the dynamic performance of the driving motor and the quality of signal transmis- sion. This has an important reference value for the production of continuous wave pulse generator. But the signal attenuation and delay in the transmission process is not considered, and the noise in the channel is simulated by Gauss noise, which needs to be further studied and solved.
出处
《西安石油大学学报（自然科学版）》
CAS
北大核心
2016年第6期97-103,共7页
Journal of Xi’an Shiyou University（Natural Science Edition）
基金
陕西省教育厅重点实验室科研计划项目(编号:15JS084)
