武汉科技大学学报(自然科学版)
武漢科技大學學報(自然科學版)
무한과기대학학보(자연과학판)
JOURNAL OF WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY(NATURAL SCIENCE EDITION)
2014年
1期
59-62
,共4页
FPGA%超声波碎石%控制器%反馈调节
FPGA%超聲波碎石%控製器%反饋調節
FPGA%초성파쇄석%공제기%반궤조절
FPGA%ultrasonic lithotripsy%controller%feedback regulation
设计一种基于FPGA的超声波碎石系统信号发生与自动调节输出控制器。采用FPGA实现直接频率合成技术,采用FPGA监控换能器两端输出电压与电流的T T L电平信号,根据电流、电压相位差来控制输入正弦波信号的频率,最终实现控制器的设计。实验结果表明,该控制器输出信号稳定,系统反馈调节精度高。
設計一種基于FPGA的超聲波碎石繫統信號髮生與自動調節輸齣控製器。採用FPGA實現直接頻率閤成技術,採用FPGA鑑控換能器兩耑輸齣電壓與電流的T T L電平信號,根據電流、電壓相位差來控製輸入正絃波信號的頻率,最終實現控製器的設計。實驗結果錶明,該控製器輸齣信號穩定,繫統反饋調節精度高。
설계일충기우FPGA적초성파쇄석계통신호발생여자동조절수출공제기。채용FPGA실현직접빈솔합성기술,채용FPGA감공환능기량단수출전압여전류적T T L전평신호,근거전류、전압상위차래공제수입정현파신호적빈솔,최종실현공제기적설계。실험결과표명,해공제기수출신호은정,계통반궤조절정도고。
A FPGA-based controller for signal generation ,automatic regulation and output used in the ultrasonic lithotripsy system was designed .It uses FPGA to realize direct frequency synthesis ,and employs TTL level signal of the output voltage and current at both ends of FPGA monitoring trans-ducer to adjust the frequency of the sinusoidal signal inputted on the basis of the current ,voltage phase difference for the ultimate automatic control .Experimental results show that the controller is a-ble to output stable signal and its feedback regulation is accurate .