Analysis on fuzzy comprehensive evaluation and optimization of shelling performance of castor capsule sheller

The shelling performance of a certain model castor capsule sheller with a twin-roller structure is affected by many factors, such as the roller gap, roller rotation speed, rotation speed differential and moisture content of the castor capsule. In addition, the shelling performance is usually measured in two competing indexes such as the shelling rates and the broken rates. In this paper, the orthogonal experiment method and the fuzzy comprehensive evaluation method were integrated to study the performance of the castor capsule sheller. First, different parameter combinations were researched based on the orthogonal experiment to determine the effects on different investigated indexes. Second the shelling performance was evaluated comprehensively according to the fuzzy evaluation method. Finally, the range analysis was carried out on the basis of the evaluated values and the orthogonal experimental results to determine the optimal parameter combination. Thus, the multi-index experiment is changed into single-index experiment. The research indicates that the application of fuzzy comprehensive evaluation provided better results.