Research On Matching And Optimization Of Multi-source Power System For Automatic Cone Machine

The appearance of the automatic cone machine has changed the situation of manual laying and recycling traffic cones in the highway. It is of great significance to improve the working efficiency and safety of the maintenance work. The optimization method of the matching for working device and the power system is one of the important research contents of the automatic cone machine. To improve the working efficiency, reduce the heat of the hydraulic system and reduce the cost,this paper determine a multi-source power system scheme. Actuators of the work device and key component of the driving power system parameter are matched and optimized on the research. Based on this idea,this paper carries out and completes the following research work:Firstly, the working principle of the automatic cone machine is analyzed. The comparison and analysis of the different driving and speed control schemes of the working device are carried out. In view of the low running speed, the change of the working device load are analyzed.Based on the working environment and operating conditions, the multi-source power system is determined by using of weak hybrid technology.Secondly, the load of the working device actuators is solved and the parameters are matched using the Lagrange equation and the dynamic analysis method. Based on the power demand of the working device and the driving system, the key components of the power system are selected and matched according to the hybrid system matching method.Thirdly, the model of the multi-source power system is established according to multi-domain unified modeling method and co-simulation technology, in order to verify the rationality of multi-source power system parameter matching. The driving power system, hydraulic drive system, working device control system and driving power control system are included in the model.Finally, the simulation analysis of the automatic cone machine is conducted in the transition condition and the working condition. The results show that the driving power system meets the demand of the transition condition, and energy saving speed loop has better speed performance. To solve the problems such as high peak flow, low working efficiency and low utilization rate of hydraulic system, the optimization model of actuator parameters is established to reduce the action cycle time and improve the energy utilization rate. The simulation is used to verify and compare the performance of the optimized parameters with the original.The results show that the multi-source power system composed of weak hybrid system and energy-saving speed loop could effectively solve the problems such as insufficient power of the working device and serious heat of the hydraulic system under various operating conditions.This paper lays the theoretical foundation for the optimizing and matching of automatic cone machine' power system.