CAJ | 학술논문

物料加热液化分阶段进行升、恒温生产过程，物料温度作为主控变量，各阶段升温过程要求按规定速率进行升温、恒温过程要求按定时定值进行恒温；限值控制执行对主控变量控制存在关联性影响，从而产生升温超速与二次恒温问题。对此，采用温度设定、参数自整定、逻辑控制方法，设计了分段PID规律控制策略，并利用ST语言和FBD语言编程，由DCS系统实现设计的控制策略。该控制策略实现了生产过程控制要求，成功解决了该生产过程的复杂控制问题，并克服了升温超速与二次恒温问题，应用效果良好。
물료가열액화분계단진행승、항온생산과정，물료온도작위주공변량，각계단승온과정요구안규정속솔진행승온、항온과정요구안정시정치진행항온；한치공제집행대주공변량공제존재관련성영향，종이산생승온초속여이차항온문제。대차，채용온도설정、삼수자정정、라집공제방법，설계료분단PID규률공제책략，병이용ST어언화FBD어언편정，유DCS계통실현설계적공제책략。해공제책략실현료생산과정공제요구，성공해결료해생산과정적복잡공제문제，병극복료승온초속여이차항온문제，응용효과량호。
The production process of material heating liquefaction is the phased heating process including temperature rising stage and temperature holding constantly stage, and the temperature of material is used as the master control variable. Each temperature rising stage shall be controlled in accordance with specific rate, while the temperature holding stage shall be controlled in accordance with the setpoint and timing. By adopting temperature setting, parameter self-tuning and logic control methods, the segmented PID regulation control strategy is designed;and with ST language and FBD language programming, the control strategy is implemented by DCS. This control strategy implements the control requirements for the production process and successfully resolves the complicated control issue of such process and overcomes the temperature rising overspeed and secondary thermostatic problems.