The auto -control of air-valve is a difficult problem in the jigger control project, the capability of the auto-control of air-valve affects the delamination of the coal bed directly.

• 风阀自动控制一直是跳汰机控制的难点，而风阀控制性能的好坏直接影响着床层的分层效果，因此，对风阀控制的研究尤为重要。