Browse Publications Technical Papers 2012-01-2042
2012-09-24

Modeling Simulation and Experimental Verification of an Excavator Hydraulic System - Load Sensing Flow Sharing Valve Model 2012-01-2042

This paper describes the results of a study focused on the mathematical modeling of an excavator hydraulic system. From the viewpoint of designing and tuning an efficient control system, the excavator is a very complex nonlinear plant. To design and tune such a complex control system an extremely good nonlinear model of the plant is necessary. The problem of modeling an excavator is considered in this paper; a nonlinear mathematical model of an excavator has been developed using the AMESimĀ® modeling environment to replicate actual operating conditions. The excavator model is described by detailed models of the main pump, valve block and kinematic model. The objective of this research is to develop a complete simulation model of an excavator with the capability of reproducing the actual characteristics of the system. The model could then be used as a platform to facilitate the study of alternate control strategies towards energy efficient systems and new controller designs for HIL. The novelty in the modeling approach is that the detailed component models have been developed to replicate actual conditions while not being demanding on computational time. This has been achieved through a balance of semi-empirical models, while maintaining the flexibility of varying the gain characteristics of the components for enhancing system performance. The benefit of this model is it provides an advantage on computational time for complex system modeling while not compromising on the systems characteristics. Hence, this paper presents the developed model of a complete excavator system with detailed verification of individual components and preliminary results of a complete excavator system.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.
X