張紅玲1 ,張繼光2,侯靜2 |
(1.解放軍第451醫(yī)院經(jīng)管科,陜西西安710054) (2.西北工業(yè)大學(xué)電子信息學(xué)院,陜西西安710072) |
摘要 介紹了一種用單片機(jī)實(shí)現(xiàn)的數(shù)字變頻控制器,可根據(jù)外界條件變化,自適應(yīng)地改變輸出頻率,從而可使被驅(qū)動(dòng)電機(jī)的負(fù)載能力在一定的范圍內(nèi)自動(dòng)地適應(yīng)環(huán)境條件,達(dá)到無(wú)控調(diào)整的目的。這種控制器不但可用于一般交流變頻電機(jī)的驅(qū)動(dòng),也可以在小頻率范圍實(shí)現(xiàn)對(duì)普通交流電機(jī)的驅(qū)動(dòng)。因之,可應(yīng)用于某些工業(yè)控制及家用電器中。 |
關(guān)鍵字 變頻控制器;單片機(jī);自適應(yīng);家用電器 |
The Design and Application of Full-digital Variable Frequency Inverter by AC89C2051 |
ZHANG Hongling1,ZHANG Jiguang2,HOU Jing2 |
(1 Branch of economy management,451st Hospital of People’s Liberation Army,Xi’an Shannxi 710054 China) (2 School of Electronic and Information,Northwestern Polytechnical University,Xi’an Shannxi 710072 China) |
Abstract It is introduced a kind of digital variable frequency inverter in which the single-chip microcomputer technique is employed. This inverter can supply a variable frequency automatically according to the outer conditions.Thereby,it will enable the load capacity of driven motor automatically adapt to environmental conditions in a certain area,achieving the purpose with no adjustment. This controller can be used not only in ordinary AC motor-driven,it can also drive ordinary AC motor in a small frequency range.Therefor,it can be used in the industrial automatic control and domestic appliances. |
Keywords variable frequency inverter;single-chip microcomputer;adaptive;domestic appliances |
0 引言
用戶(hù)存儲(chǔ)器,編程較為方便。AT89C2051引腳如圖2所示。 顯然,變頻器的輸出頻率越高的值越大,而分頻系數(shù)越小。例如,當(dāng)需要輸出fo=50 Hz交流電時(shí),則先求得
為了提高系統(tǒng)的分辨率,可提高系統(tǒng)的振蕩頻率,一般可使fo的頻率分辨率達(dá)到0.5 Hz以下。
3 波形存儲(chǔ)的幾點(diǎn)考慮
3.2 存儲(chǔ)波形的形成
3.3 輸出交流電源的控制
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作者簡(jiǎn)介: |
張紅玲(1972-),女,本科畢業(yè),現(xiàn)為中國(guó)人民解放軍第451 醫(yī)院經(jīng)管科工作人員。 |
參考文獻(xiàn): |
[1] 周淵深. 交直流調(diào)速系統(tǒng)與MATLAB 仿真[M].北京:中國(guó)電力出版社,2004.3. |