## 3 Parameter Optimization and Performance Test
### Optimization Results and Verification Test of Drive Cam Installation Angle
#### 3.2.5 Test Results and Analysis  
The test data and test index calculation results are shown in Table 2.  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Experimental** & \multicolumn{5}{c}{**Experiment Groups**} & \multicolumn{2}{c}{**Mean**} \\
**Results** & **1** & **2** & **3** & **4** & **5** & **Value** \\ \hline \(n_{1}\) & 5 & 5 & 5 & 5 & 5 & 5.00 \\ \(n_{2}\) & 5 & 5 & 5 & 5 & 5 & 5.00 \\ \(m_{ai}\) & 14.1 & 11.64 & 12.37 & 14.16 & 11.69 & 12.79 \\ \(m_{bi}\) & 12.91 & 10.68 & 11.04 & 13.12 & 10.49 & 11.65 \\ \(t_{1}\) & 0.55 & 0.61 & 0.52 & 0.59 & 0.52 & 0.56 \\ \(T_{12}\) & 0.58 & 0.55 & 0.52 & 0.54 & 0.57 & 0.55 \\ \(T_{23}\) & 0.57 & 0.55 & 0.59 & 0.61 & 0.55 & 0.57 \\ \(T_{34}\) & 0.63 & 0.57 & 0.56 & 0.53 & 0.61 & 0.58 \\ \(T_{45}\) & 0.54 & 0.51 & 0.55 & 0.56 & 0.51 & 0.53 \\ \hline \(Y_{1}/\%\) & 100 & 100 & 100 & 100 & 100 & 100.00 \\ \(Y_{2}/\%\) & 6.11 & 6.51 & 5.38 & 5.94 & 7.29 & 6.25 \\ \(Y_{3}/\%\) & 8.44 & 8.25 & 10.75 & 7.34 & 10.27 & 9.01 \\ \hline \hline \end{tabular}
\end{table}
Table 2: Results of group seedling dropping performance test.  
Analysis of the success rate of seedling dropping: According to the data in the table, the success rate of falling seedlings in five groups of experiments was 100%, i.e., all the potted seedlings could fall smoothly without the phenomenon of stuck seedlings. The results showed that the size design of the seedling separating cylinder and the seedling dropping cylinder was designed to meet the requirements of smooth dropping of the pot seedlings under the premise of a compact structure.
2. Analysis of the seedling dropping interval and variation coefficient: According to the data in the table, due to the influence of the difference between the individual seedlings, the seedling dropping duration at the same position still fluctuated, which in turn caused the dropping time interval between the seedlings to change randomly. In the five groups of experiments, the time interval of dropping the seedlings was relatively stable, with a maximum coefficient of variation of 7.29%, a minimum coefficient of variation of 5.38%, and an average coefficient of variation of 6.25%, with a small fluctuation range.
3. Analysis of the matrix damage rate: The matrix damage rate is an important index affecting planting quality and subsequent growth of pot seedlings. In the experiment, the minimum loss rate of the pot seedlings was 7.34% in group 4, and the maximum was 10.75% in group 3. The average loss rate of the pot seedlings was 9.01%, which was less than 10%. The observation of the test process revealed that the loss rate of the potted seedlings was related to the state of the potted plants themselves. Some pot seedlings were relatively intact before seedling dropping, and only small particles were lost after seedling dropping (pot seedlings at positions No. 1, 4, and 5 in Figure 12), while some potted seedlings had a greater loss of the matrix and loose cans during the emergence and harvesting stages, which led to a greater loss of mass during collision (pot seedlings at the No. 2 and 3 positions in Figure 12).