## 4 Detailed Design of the Conductive Center Pole Based on the Innovative Design Method
### Establishing the Design Parameter Vector and Design Matrix of the Conductive Center Pole  
Solving the design parameter \(DP_{1}\): In order to ensure that the two poles of the conductive module can be accurately aligned after the center pole is screwed and docked, the corresponding position of the center pole can be marked after the center pole is screwed. Additionally, the electrode channel corresponding to the conductive module can be arranged at the marked position, and increase the probability of electrode alignment by increasing the contact area.  
Solving the design parameter \(DP_{2}\): In order to ensure that the two poles of the conductive module can fully contact and achieve conduction after the center pole is screwed together, the length of the connecting thread of the center pole should be measured in advance, and the placement position of the conductive module in the center pole should be designed according to the distance after screwing.  
Solving the design parameter \(DP_{3}\): In order to ensure that the wire is not twisted during the screwing and installation process of the center pole, an anti-rotation structure can be designed between the conductive module and the center pole to avoid the relative rotation of the conductive module and the center pole during the screwing process, which may cause the wire to be twisted.  
Solving the design parameter \(DP_{4}\): To ensure the insulation and temperature resistance of the conductive module, high-temperature-resistant resin and conductive copper phase materials can be used. The high-temperature resin is small in size and difficult to machine, so must be manufactured by 3D printing.  
Figure 9: The innovative design process of the conductive center pole.  
The expression of the design parameter vector can be obtained as follows:  
\[\begin{bmatrix}DP_{1}\\ DP_{2}\\ DP_{3}\\ DP_{4}\end{bmatrix}=\left\{\begin{array}{ll}\text{Mark the position in the circumferential direction of the center rod}\\ \text{Measure and set the length of the thread}\\ \text{Design anti }-\text{rotation structure}\\ \text{Use high temperature resistant resin}\end{array}\right\} \tag{3}\]  
Through the expression of the design parameter vector, the initial conceptual design diagram of the conductive center pole can be obtained, as shown in Figure 10.  
Set the elements in the design matrix \(A\) to \(X\). It can be seen from the mapping relationship between the functional requirement vector \(\{FR\}\) and the design parameter vector \(\{DP\}\) that the connection of the conductive module is related to the position of the center pole circumferential mark, the thread length, and the angle of the anti-rotation structure. Therefore, the design parameter \(DP_{1}\) is related to the design parameters \(DP_{2}\) and \(DP_{3}\), and the design parameter \(DP_{2}\) is related to the design parameter \(DP_{1}\) and \(DP_{3}\). The design matrix \(A\) is as follows:  
\[A=\left\{\begin{array}{cccc}1&1&1&0\\ 1&1&1&0\\ 0&0&1&0\\ 0&0&0&1\end{array}\right\} \tag{4}\]  
In the design matrix \(A\), 1 means that there is a correlation between the design parameters, and 0 means that there is no correlation between the design parameters. This matrix is a coupling matrix and does not satisfy the independence axiom design. The associated design needs to be optimized and decoupled to form a triangular or diagonal array that meets the design requirements.  
Figure 10: Conceptual design drawing of the conductive center pole.