模具工业
模具工業
모구공업
DIE & MOUID INDUSTRY
2015年
1期
43-46,50
,共5页
注射模%温控系统%双层PID%试验研究
註射模%溫控繫統%雙層PID%試驗研究
주사모%온공계통%쌍층PID%시험연구
injection mould%temperature-controlled system%double layer PID%experimental research
为提高注射模加热板各点温度的均衡性，设计了以高精度K型热电偶和AD595为多通道温度采集与调理电路，以PIC18F24K50单片机为控制核心，用可控硅作加热系统的热管控制元件。系统软件设计上提出了总、分双层PID合成输出的PID算法。经过试验测试，该系统控制的加热板升温快、各点温度均衡，加热时间比传统的独立多温控器系统缩短30%以上，提高了注塑机的工作效率。
為提高註射模加熱闆各點溫度的均衡性，設計瞭以高精度K型熱電偶和AD595為多通道溫度採集與調理電路，以PIC18F24K50單片機為控製覈心，用可控硅作加熱繫統的熱管控製元件。繫統軟件設計上提齣瞭總、分雙層PID閤成輸齣的PID算法。經過試驗測試，該繫統控製的加熱闆升溫快、各點溫度均衡，加熱時間比傳統的獨立多溫控器繫統縮短30%以上，提高瞭註塑機的工作效率。
위제고주사모가열판각점온도적균형성，설계료이고정도K형열전우화AD595위다통도온도채집여조리전로，이PIC18F24K50단편궤위공제핵심，용가공규작가열계통적열관공제원건。계통연건설계상제출료총、분쌍층PID합성수출적PID산법。경과시험측시，해계통공제적가열판승온쾌、각점온도균형，가열시간비전통적독립다온공기계통축단30%이상，제고료주소궤적공작효솔。
In order to improve the temperature balance in each point of the heating plate of injection moulds, a thermotube control element was designed in which the high preci?sion K type thermocouple and AD595 were used as multi-channel temperature acquisition and conditioning circuit, the microcontroller PIC18F24K50 as controlling core and the sili?con controlled rectifier as heating system. In design of system software, the PID algorithm with total and partial double layer PID combined output was proposed. The test shows that the heating plate has a fast heating up and equalized temperature in each point under the system’s control; and the heating time is over 30% shorter than traditional independent multi-temperature controller system.
