Research On Impact Of Fin Electric Servo System Of Sailing Ships

This topic comes from Harbin Engineering University, 211 projects, "Fin electric servo system test device" issue. Fin now turn fin drive system uses a servo system. With the electric servo systems are also installed in the fin, but the electric motor servo system for more stringent control of torque.In this paper, the ship rolling motion analysis, the current study used the ship characteristics of the model are largely linear, linear model simple operation, and under certain conditions, can replace the actual system of complex dynamic non-linear model. However, in the case of large waves, using linear ship model ship rolling motion of their great error, we must consider the use of non-linear model.Then introduced the theory of vibration of thin-wing theory of Theodorsen. Calculation for sine vibration movement around the axis of the fins of the dynamic hydrodynamic coefficients are given the application of vibration theory of thin wings, flat-wing Movement for the sine oscillation hydrodynamic coefficients (ie, fin hydrodynamic coefficients of vibration solution part) derivation.Then through the analysis of fin-axis torque is given fin movement in the water to make a complex model of fin-axis torque, and suffered a variety of fin-axis torque separately to discuss the actual formula is given. Major role in anti-rolling fin on the three kinds of torque detailed derivation, finally, the 053 ship fin stabilizer fins as a model of the torque curve of the fin curve simulation, for a variety of aircraft transferred under state fin torque to overlay simulation.Finally for the electrical servo system design is based on the genetic tuning of PID controllers, in the MATLAB simulation model to establish the system. In the modeling process, first through the establishment of the motor to build the simulation model, respectively, and the conventional PID tuning based on genetic algorithms for PID control algorithm carried out under the control of the system simulation. The results showed that: Based on Genetic Algorithm-tuning PID control method in the control performance and robustness in terms of greatly superior to conventional PID controller, high-performance control system more responsive to the quality system requirements. This is also based servo control system designed using the control algorithms and filtering algorithm to establish the goal.