Consensus Control Design for 360 MN Extrusion Machine Producing Process

Abstract

This paper mainly addresses the issue of 360 MN extrusion machine and focuses on the stabilization control of main table attitude. We will first introduce the problem and then model the extrusion machine. As the machine is a multi-input multioutput (MIMO) and strong coupling system, it is challenging to apply existing control theory to design a controller to stabilize the main table attitude. Motivated by recent research in the field of multiagent systems, we design a consensus control protocol for our system and derive our convergence conditions based directly on Routh stability criterion. The advantages of the design are also demonstrated by numerical simulation.

Second-order consensus predictive control for 360MN extrusion machine

“…A discretized consensus control protocol for the second-order model is proposed based on the state equation for main table of 360MN extrusion machine (Wang et al, 2013). A consensus predictive control protocol is presented analogously and is proved to have smaller spectral radius comparing to consensus control algorithm by analyzing the eigenvalues.…”

“…Proof of the discrete state equation Lemma 4 (Wang et al, 2013). The radius of disk is r ¼1, total gravity of main table without loading is G ¼mg, shared by N agents evenly, rotation inertia of disk relative to α axis and β axis are I α and I β respectively, both are equal to I, angle α and β is very small which can satisfy the equation sin ðαÞ % α, sin ðβÞ % β, approximately (this is easy to satisfy for the disk have large radius in reality), then the state equation of disk is given by Eq.…”

“…A consensus control protocol for 360MN extrusion machine (Wang et al, 2013) has solved the issue of keeping extrusion machine's table in balance.…”

“…Consensus control mechanism was introduced to 360MN extrusion machine control strategies (Wang et al, 2013) because consensus control is commonly used for cooperated control and this issue has some similarities to the multi-vehicle cooperated control problem. Consensus control mechanism can solve the problem described above.…”

Research on Velocity Fluctuation of High Pressure and High Flow Double Booster Cylinder Hydraulic System

“…e hydraulic system of extrusion machine needs to achieve high pressure and high flow to meet the requirements of extrusion pressure and extrusion velocity. Stable extrusion velocity is the key to produce smooth and crack free products [1], and research on constant velocity extrusion is the focus at present [2,3]. e booster system of existing extrusion machine basically uses a booster cylinder to generate high pressure.…”