Slewing bearing test system and force control method

Slewing bearing is usually designed based on the traditional bearing theory, but the calculation parameters are determined by a large number of experimental data, therefore, the experimental directly determines the reliability and accuracy of the design calculation of the slewing bearing. In this paper, slewing bearing and its experimental techniques are introduced, then, the NJUT-I test system is developed. This test system includes the main body, hydraulic system, detect and control systems. The axial force, radial force and overturning moment can be imposed, and a variety of experimental projects can be carried out, such as the carrying capacity, the flexibility, the service life. What´s more, A fuzzy CMAC is adopted to establish the force control system for resolving the axial force-Moment interaction, and the experiment results indicate that the hydraulic cylinder can follow the scheduled force track, the stability is good. It can be used for the quality inspection, performance assessment, optimization of the design, and so on. It is of great significance for the slewing bearing industry.