An AC-operated portable machine was developed to mechanize the pruning operation conducted on the petioles of palm trees. The performance of the machine was tested in the laboratory on petioles at different petiole Moisture Contents (MC). Power, energy and time required for cutting were the three criteria considered to evaluate and test the machine`s performance. Results of the test revealed that the relationships between petiole MC and power, energy and time required for cutting were all significant, where the values of the determination factors (R2) were 0.86, 0.71 and 0.81, respectively. The results also showed that both energy and time required for cutting were proportional to the petiole MC. The average time and energy required at a petiole MC range of 60 to 75% were 3 sec cm-2 and 32 W sec cm-2, respectively. However, the values of the two variables were 0.9 sec cm-2 and 12 W sec cm-2, respectively, at lower petiole MC range (7 to 20%). Results also demonstrated that the power required for cutting was inversely proportional to the petiole MC. An average power values of 12 and 30 W cm-2 were required at high levels of petiole MC (60 to 75%) and low levels of petiole MC (7 to 20%), respectively.
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机译：开发了交流操作的便携式机器，以机械化对棕榈树的叶柄进行的修剪操作。在实验室中在不同叶柄水分含量（MC）的叶柄上测试了机器的性能。切割所需的功率，能量和时间是评估和测试机器性能的三个标准。测试结果表明，叶柄MC与切割所需的功率，能量和时间之间的关系都很显着，其中确定因子（R2）的值分别为0.86、0.71和0.81。结果还表明，切割所需的能量和时间均与叶柄MC成正比。叶柄MC范围为60％至75％所需的平均时间和能量分别为3秒cm-2和32瓦秒cm-2。但是，在较低的叶柄MC范围（7％至20％）下，这两个变量的值分别为0.9 sec cm-2和12 W sec cm-2。结果还表明，切割所需的功率与叶柄MC成反比。在高水平的叶柄MC（60％至75％）和低水平的叶柄MC（7％至20％）时，分别需要12和30 W cm-2的平均功率值。
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