Background: With the development of modern agriculture, metering devices are being widely used to accelerate the speed of planting and to provide an accurate sowing. Moreover, the seed metering device is very important since China is one of the important agricultural production countries. Especially, rapeseed metering device is desired for accurate planting because the rapeseed is so small that it is difficult to control in the planting process.
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Yang et al. (2016) studied this question.