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您的检索式：作者名="Meipeng ZHONG"
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| 1 | Research Progress of Adansonia digitata显示文摘The origin,introduction,cultivation,active ingredients,use and advances in propagation methods of Adansonia digitata are reviewed in this paper,with focus on the rapid propagation techniques of plant tissues,to provide theoretical basis for seedling breeding and promotion of A.digitata. | Yang LIU Xiangtao ZHONG Guanming CHEN Guomin LIU Meipeng CHEN Hongyang LI | 2019 | Asian Agricultural Research2019，11，1： | 0 |
| 2 | Resistance Torque Based Variable Duty-Cycle Control Method for a Stage Ⅱ Compressor显示文摘The resistance torque of a piston stage Ⅱ compressor generates strenuous fluctuations in a rotational period, and this can lead to negative influences on the working performance of the compressor. To restrain the strenuous fluctuations in the piston stage Ⅱ compressor, a variable duty-cycle control method based on the resistance torque is proposed. A dynamic model of a stage Ⅱ compressor is set up, and the resistance torque and other characteristic parameters are acquired as the control targets. Then, a variable duty-cycle control method is applied to track the resistance torque, thereby improving the working performance of the compressor. Simulated results show that the compressor, driven by the proposed method,requires lower current, while the rotating speed and the output torque remain comparable to the traditional variable-frequency control methods. A variable duty-cycle control system is developed, and the experimental results prove that the proposed method can help reduce the specific power, input power, and working noise of the compressor to 0.97 k W·m^(-3)·min^(-1), 0.09 k W and 3.10 d B,respectively, under the same conditions of discharge pressure of 2.00 MPa and a discharge volume of 0.095 m^3/min. The proposed variable duty-cycle control method tracks the resistance torque dynamically, and improves the working performance of a Stage Ⅱ Compressor. The proposed variable duty-cycle control method can be applied to other compressors, and can provide theoretical guidance for the compressor. | Meipeng ZHONG Shuiying ZHENG | 2017 | Chinese Journal of Mechanical Engineering2017，30，4： | 0 |
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