Application of Genetic Operator-Ant Colony Optimization in Diesel Engine Crankshaft Vibration
In view of the big vibration and large noise of the marine diesel engine,and the influencing factors of unbalanced force caused by diesel reciprocating motion and rotational component,it established the dynamics model of piston secondary motion within the diesel engine cylinder block,and Runge-Kutta(RK)method was used to solve the objective function,to calculate the inertia of internal combustion engine and the impact of piston slap on the engine suspension and the vibration displacement on the engine cylinder block surface.Based on the improved ant colony algorithm,aiming at optimizing vibration amplitude of crank-shaft,the paper,proposed global and local search coupling strategy.The results show that the minimum convergence occurs at the crossing probability of 0.6 and the mutation probability of 0.05.The accuracy of the improved ant colony algorithm is further verified by comparing with the mathematical model.
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