Method for Controlling Speed of Port Loading and Unloading Machinery Based on Real-time Information

Yu, X.; Li, W.; Wang, D.; Li, Y., and Liu, X., 2019. Method for controlling speed of port loading and unloading machinery based on real-time information. In: Hoang, A.T. and Aqeel Ashraf, M. (eds.), Research, Monitoring, and Engineering of Coastal, Port, and Marine Systems. Journal of Coastal Research, Special Issue No. 97, pp. 211–216.The steady state distortion of port loading and unloading machinery is easy to appear in the process of frequency conversion speed regulation, so it is necessary to carry out the design of mechanical speed control. The automatic control technology of frequency conversion speed regulation of port loading and unloading machinery based on real time information adaptive regulation is put forward. The constraint parameter model of frequency conversion speed regulation of port loading and unloading machinery is constructed by taking the parameters such as rotating inertia moment, load strength, steady state power, gain and equivalent load of the manipulator as the constraint indexes. The control objective function is constructed, Smith controller is used to adjust the frequency conversion speed of port loading and unloading machinery, combined with real-time information feedback adjustment compensation method to suppress the speed regulation error of port loading and unloading machinery, the output time delay compensation model of port loading and unloading machinery is established, and the automatic control optimization of frequency conversion speed regulation of port loading and unloading machinery is realized. The simulation results show that the steady-state output ability of frequency conversion speed regulation automatic control of port loading and unloading machinery is strong, and the load intensity and efficiency of port loading and unloading machinery are improved.