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	Effects of Plot Design on Estimating Tree Species Richness and Species Diversity 期刊论文 OAI收割 FORESTS, 2022, 卷号: 13, 期号: 12 作者: Zhao, Chenhao; Zhu, Yan; Meng, Jinghui \| 收藏 \| 浏览/下载：9/0 \| 提交时间：2024/03/07 plot design species richness species diversity sampling survey
	微小区土壤侵蚀试验中田口方法代替全因子设计的可行性分析期刊论文 OAI收割 Transactions of the Chinese Society of Agricultural Engineering(农业工程学报), 2015, 卷号: 31, 期号: 13, 页码: 1-9 作者: 张风宝; 杨明义; 李占斌收藏 \| 浏览/下载：33/0 \| 提交时间：2016/04/05 径流（runoff）土壤( soils) 侵蚀( erosion) 田口方法(Taguchi method) 全因子设计(full factorial design) 微小区(mini-plot)
	LABTM control system based on FPGA (EI CONFERENCE) 会议论文 OAI收割 2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan 作者: Wang Y.; Yu P.; Yu P.; Wang Y.; Wang Y. 收藏 \| 浏览/下载：153/0 \| 提交时间：2013/03/25 This paper presents the digital PI control method for design and simulation of a high precision limited angle brushless torque motor control system in Field Programmable Gate Array device (FPGA). The direct drive structures which are widely applied in many servo control fields. Matlab Xilinx System GeneratorR toolbox based on Fixed-Point Arithmetic is used to design the digital PI controller using DSP architecture plot the responses of the control system and generate the VHDL source code. The control system model consists of a digital PI a real LABTM and a real absolute Inductosyn encoder to rpm and position blocks. Through loading generated codes in process of the simulation that built by the digital discrete model it is verified that the rising time of current loop is only 1.2ms and rate loop is 8ms overshoot is rarely 4.2%. Finally the comprehensive positioning accuracy of system can reach up to 5 arc sec and the rate jitter achieves 5% with the 4 arc sec accuracy absolute Inductosyn. (2013) Trans Tech Publications Switzerland.