The hardware of system is the data acquisition equipment ( daq ) , daq includes three main functional modules : fpga , analog sampling and lcd controlling 系統(tǒng)的硬件部分是數(shù)據(jù)采集卡,數(shù)據(jù)采集卡在功能上分為fpga ,模擬采樣和液晶驅(qū)動及控制三個組成部分。
Frequency source is widely used in today ' s electronic equipment and even refered as " a heart " of many electronic systems . the frequency synthesizer with a lot of channels and high frequency stability by means of theory of phase locking has almost been a necessary component in the modern electronic systems such as telecommunication , radar and electronic countermeasure . the phase - locked frequency synthesizer can be generally divided into two kinds : one is digital phase locked frequency synthesizer , the other is analog sampling phase locked frequency synthesizer . compared with the prior , the latter has many merits such as lower phase noise , samller volume , lighter weight and lower power consumption and has a wide foreground in the equipments of microwave band 利用鎖相原理來獲得波道數(shù)目眾多、頻率穩(wěn)定度很高的頻率合成器,幾乎已成為現(xiàn)代通信、雷達(dá)和電子對抗等電子系統(tǒng)不可缺少的組成部分。鎖相式頻率合成器一般分為數(shù)字鎖相頻率合成器和模擬取樣鎖相頻率合成器兩類。取樣鎖相頻率合成器與數(shù)字鎖相頻率合成器相比,具有相位噪聲低、體積小、重量輕和功耗低等優(yōu)點,尤其在微波波段的電子設(shè)備中,具有廣闊的應(yīng)用前景。
For the measurement of analog signals such as voltage and current of astg , a filter card for pre - disposing is designed , in order to improve real - time performance , algorithms for ac analog sampling is simplified , and a compensation algorithms for phase error due to sequence - sampling is brought forward . for the measurement of impulse - width signals such as rotor - speed and rotor - position - angle , an intelligent interface card based on isa bus is designed . all programs for measure and control based on c + + are compiled and debugged and the flow for system debugging is summarized 為了提高實時性,對交流采樣算法進(jìn)行了簡化,并提出了由于非同步順序采樣所造成的相位誤差的補(bǔ)償算法;針對轉(zhuǎn)速、轉(zhuǎn)子位置角等脈沖寬度信號的測量,深入分析了測量原理,設(shè)計了基于isa總線的智能接口卡;編制和調(diào)試了基于c + +的全部測量控制程序;完成了整個系統(tǒng)的調(diào)試,并總結(jié)了調(diào)試方法。
Supported by heilongjiang province natural science foundation projects " research on the errors mechanism of time division a . c . power measurement " ( no . e9719 ) , " research on theory of analog digital mixed sampling power energy measurement " ( no . e01 - 15 ) and foundation for university key teacher by the ministry of education " the research on the low audio frequency a . c . power measurement smart instrument " ( no . 1087 ) , in this dissertation it is made that a systematic and deep study on power measurement model errors and instrument errors about analog sampling , digital sampling and mixed sampling measurement , and fully experiments about mixed sampling measurement 本學(xué)位論文在黑龍江省自然科學(xué)基金資助項目“時分割交流功率測量原理誤差產(chǎn)生機(jī)理的理論研究” (編號: e9719 ) , “模擬數(shù)字混合采樣功率與電能測量的理論研究” (編號: e01 - 15 )和教育部高等學(xué)校骨干教師資助計劃項目“中頻電功率測量智能儀器的研制” (編號: 1087 )的資助下,以電功率模擬采樣測量、數(shù)字采樣測量和混合采樣測量方法為對象,對電功率測量的原理誤差和儀器誤差進(jìn)行了系統(tǒng)和深入的理論研究和有關(guān)的實驗研究。