【摘要】 <正> 一、前言 胶合板生产中,单板干燥过程是热能耗费较大的环节,而输出单板的含水率不仅是单板干燥质量的重要指标之一,直接影响成品合格率,也影响热能利用率。目前,多数厂单纯靠操作人员的经验掌握,一般是宁干勿湿,即宁可多耗费热能来控制含水率使在标准工艺参数以下。这就造成大量的热能损失,在能源极度紧张的今天,确实是值得注意的大问题。更多还原

【Abstract】 During industrial control process, in the operating mode existing random interference, for objects having unknown parameter and slow changing, satisfied results can not be obtained with routine PID regulator. This paper puts forward a system for control veneer dryer with microcomputer. Employing the autocorrection regulator, by controlling the jaw opening of the high-pressure air intake valve, the water ratio of dried veneer is adjusted. A flowchart and the situation of simulation test in laboratory are also presented in this paper.更多还原