The Research On Energy-saving Controling System Using DSP About Hydraulic Excavator's Power-matching

Hydraulic excavator,its working condition worst and energy losses heavier, is a kind of construction machinery.At present, with the energy crisis, energy-saving has becomen a social consensus.For creating a low-carbon living,and implementing the sustainable development strategy,it is necessary to improve the performance of excavator and to reduce its energy consumption.First, this paper analysised the aspects of power losses of hydraulic excavator, then pressed the power-matching of engine and variable pump as the main measure of improving the excavator's working efficiency . And designed controling schemes of excavator's single and double pump using speed induction.For some model excavator,the paper established its power-matching mathematical model of engine and variable pump .With the limitations of traditional PID algorithm, introduced the single neuron PID algorithm, and improved this algorithm. Applicated the improved single neuron PID algorithm as excavator's controling strategies of power-matching system.With MATLAB/simulink,simulated the process of the established mathematical model of excavator.Simulation results indicated that the improved algorithm had good performance.At last, selected TI's high-performance digital signal processor (TMS320 F 2812) as chip of excavator's controller. According to the controling scheme of single pump, designed the controller's hardware and software.And verified that the system had goog performance in experiments.The paper provided a new idea for later research of excavators'power-matching.