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In this paper, Newton's law and Euler equation is employed to derive dynamic formulation of a SPE workstation driven by PMSM. The dynamic formulations can be expressed by some independent variables. In order to verify this dynamic formulation is correct, we reduce the flexible model to the rigid one under some assumptions, and adopt the genetic algorithm (GA) to identify all the parameters of the...
The kinematic joints of machine tool feed system are crucial for the dynamics modeling. It affects the dynamic characteristics of machine tool feed system, and then there will be a significant influence on machining quality of workpieces. Considering the gravity of spindle box components, a dynamic model of vertical axis feed system was established using lumped parameter method in this paper. The...
Applying Case-based Reasoning estimation method is an advanced technology in AI and ES, and it can make up for the shortcomings of software cost estimate with the traditional experience function. This paper describes the process of software cost estimate based on case-based reasoning. Distilling method of the cost driver factors based on gray relational grade analysis, similarity metrics is defined...
The purpose of this research is to optimize control and enhance performance for a variable speed constant frequency (VSCF) doubly-fed induction generator (DFIG) wind turbine generation system by using fuzzy logic controller. The control of the rotor-side converter is realized by stator flux oriented control and the fuzzy controller performs robust speed control. The control of the grid-side converter...
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