Solution technology of physical characteristic model of motional cable harness in virtual environment

The reliability of motional cable harness on the satellite rotational platform determines the reliability of the rotational platform itself. By simulating the motion of motional cable harness on the rotational platform in a virtual environment, potential issues in the cable layout design can be identified in advance, thus ensuring the reliability of the rotational platform. The high precision and efficiency to solve the physical characteristic model of motional cable harness are the prerequisites and key to simulate the cable movement. The existing solution technology of the physical characteristic model of flexible cables are primarily based on the Levenberg-Marquardt (L-M) algorithm. However, the initial solution setting of the existing L-M algorithm relies on the experience, and the damping coefficient updates are fixed, resulting in low solution accuracy and inefficiency. Therefore, an initial solution generation method based on the catenary equation and an adaptive damping coefficient update strategy and the geometric characteristic of motional cable harness is proposed. On this basis, an improved L-M algorithm is proposed. The simulation results verify that the present algorithm outperforms the existing algorithms in terms of the solution accuracy and efficiency.