Structural design and optimization of DC excitation coil for electromagnetic launch weft insertion

Dynamic prediction model of segmented combined electromagnetic launch weft insertion for super-wide width industrial fabrics

“…According to the segmented combined control logic of DPMSCEI, the serial number of the coil with the longest energization time is the calculated number of each energization. Figure 8(d) shows the temperature rise due to the heat generated by each coil after one acceleration calculated using equation (15). The temperature rise is mainly concentrated in the first 6 coils, with the 6th coil producing the largest amount of heat.…”

“…Structural parameters of electromagnetic launch weft insertion coil are listed as follows: coil inner radius R 1 (m); coil outer radius R 2 (m); single coil length L coil (m); coil current I (A); coil filling factor C; American wire gauge AWG; conductivity of wire σ ¼ 5:8 × 10 7 S=m. The coil temperature rise model considering the wire gauge can be composed of equations ( 5)- (15). The relationship between wire gauge and wire diameter can be referred to Egleston et al 39 Coil cross-sectional area:…”

“…11 The second aspect is to study the influence of device structure parameters, 14 trigger position, excitation size and additional parameters on electromagnetic force. 13,15 The single-stage 15 and multi-stage electromagnetic launch weft insertion 16 are configured with the exit velocity as the main evaluation index. The third aspect is to establish a surrogate model between the exit speed and additional parameters through machine learning and optimize the weft insertion performance through the surrogate model.…”