Modeling of Orange Mass Based on Dimensions
محل انتشار: مجله علوم و فناوری کشاورزی، دوره: 2، شماره: 4
سال انتشار: 1379
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 80
فایل این مقاله در 7 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JASTMO-2-4_001
تاریخ نمایه سازی: 22 آبان 1402
چکیده مقاله:
There are instances in which it is desirable to determine relationships among fruit
physical attributes. For example, fruits are often graded on the basis of size and projected
area, but it may be more suitable and/or economical to develop a machine which grades
by mass. Therefore, a relationship between mass and dimensions or projected areas and/
or volume of fruits is needed. Various grading systems, size fruits on the basis of specific
parameters. Sizing parameter depends on fruit and machine characteristics.Models for
predicting mass of orange from its dimensions and projected areas were identified. Models
were divided into three classifications: ۱- Single and multiple variable regression of
orange dimensions (۱st classification). ۲- Single and multiple variable regression of projected
areas (۲nd classification). ۳- Estimation of orange shape; ellipsoid or spheroid based
on volume (۳rd classification). Ten Iranian varieties of oranges were selected for the study.
۳rd classification models had the highest performance followed by ۲nd and ۱st classifications
respectively, with R۲close to unity. The ۲nd classification models need electronic systems
with cameras for projection whereas, ۱st classification models are used in the simple
mechanical systems, except multiple variable ones, of and ۳rd classification models need
more complex mechanical systems. Among the systems that sorted oranges based on one
dimension (Model ۲), system that applies intermediate diameter suited better with nonlinear
relationship as: M = ۰.۰۷b۲ – ۲.۹۵ b + ۳۹.۱۵ with R۲= ۰.۹۷.
کلیدواژه ها:
نویسندگان
A. Tabatabaeefar
Department of Agricultural Machinery Engineering, College of Agriculture, University of Tehran, Islamic Republic of Iran.
A. Vefagh-Nematolahee
Department of Agricultural Machinery Engineering, College of Agriculture, University of Tehran, Islamic Republic of Iran.
A. Rajabipour
Department of Agricultural Machinery Engineering, College of Agriculture, University of Tehran, Islamic Republic of Iran.