Modeling and Simulation of Electro-Hydraulic Proportional Position Control System with the Flexible Hose

2012 ◽  
Vol 468-471 ◽  
pp. 2094-2099 ◽  
Author(s):  
Yong Tian ◽  
Bo Liu ◽  
Hong Wei Gao ◽  
Wei Qi Li
Keyword(s):  
Mathematical Modeling ◽  
Control System ◽  
Dynamic Simulation ◽  
Hydraulic System ◽  
Position Control ◽  
Flexible Hose ◽  
Proportional Control ◽  
Power Bond Graph ◽  
Position Control System ◽  
Hose Model

A method which utilizes the power bond graph to establish the flexible hose model is described in this work. By using this method, the paper establishes mathematical modeling for the location of electro-hydraulic proportional control system with the flexible hose. And then, this article completes dynamic simulation by MATLAB and analyses the results of simulation. The effect of the flexible hose parameters on dynamics characteristics of the hydraulic system is also studied.

Energy Optimal Control of a Residential Space-Conditioning System Based on Sensible Heat Transfer Modeling

2003 ◽  
Author(s):  
Feng Hong ◽  
Manohar Kulkarni
Keyword(s):  
Control System ◽  
Thermal Comfort ◽  
Position Control ◽  
Residential Building ◽  
Data Sampling ◽  
Simulation Code ◽  
Proportional Control ◽  
Control Schemes ◽  
Residential Space ◽  
Position Control System

Nowadays most HVAC systems for residential building in the Unites States use a single-zone, two-position control system which is simple and easy to manage. However, this two-position control system has its disadvantage due to its unsatisfactory thermal comfort and energy inefficiency. This paper presents a proportional control system for the residential building by setting up the dynamic simulation for the building and the control system. The state-space method is used to model the building system and the simulation code is implemented on MATLAB™. Under this model, optimization of the controller is possible and implemented. The thermal comfort and energy efficiency are compared under the different schemes. It has been found that proportional control is advantageous to the two-position control for the thermal comfort while there is not much different in energy consumption between two control schemes. In this work, the furnace was operated without any minimum run time and under continuous data sampling.

scholarly journals Reduced Order Model of Position Control System

2011 ◽  
pp. 113-115
Author(s):  
Yogesh V. Hote ◽  
A. N. Jha ◽  
J. R. P. Gupta
Keyword(s):  
Control System ◽  
Position Control ◽  
Open Loop ◽  
Simple Approach ◽  
Reduced Order Model ◽  
Order Model ◽  
Reduced Order ◽  
Reduced Order Modelling ◽  
Position Control System

In this paper, simple approach is proposed to determine reduced order model of a unstable open-loop position control system. This approach is based on Krishnamurthy’s approach on Routh criterion on reduced order modelling. The results are simulated in Matlab environment.

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