The research of two-degree freedom small scale helicopters based on kinetic modeling and control analysis

2012 ◽  
Author(s):  
Changlong Lu ◽  
Ping Qiu
Keyword(s):  
Kinetic Modeling ◽  
Small Scale ◽  
Control Analysis ◽  
Modeling And Control ◽  
And Control

OTEC Plant Response and Control Analysis

1982 ◽  
Vol 104 (3) ◽  
pp. 208-215 ◽  
Author(s):  
W. L. Owens
Keyword(s):  
Nonlinear Differential Equations ◽  
System Response ◽  
Small Scale ◽  
Control Analysis ◽  
Plant Design ◽  
Operational Control ◽  
Response Curves ◽  
Control Schemes ◽  
Mass Flow Rates ◽  
And Control

An analysis is presented which allows prediction of closed-cycle OTEC power plant system response and control. Two basic operational control schemes are presented, which are primarily related to the type of seawater pumps employed. Variable flow seawater pumps allow optimization of the OTEC thermal-cycle state points for maximization of net generated power. Constant flow pumps are cheaper and simpler, but do not allow direct control over the evaporator and condenser operating temperatures. A system of nonlinear differential equations representing the basic elements of a constant seawater flow OTEC plant with turbine bypass flow control has been formulated for computer solution. Typical normalized response curves are presented for pressures, temperatures, mass flow rates, and generator speed for a small-scale, 50-kW OTEC plant design.

Theoretical Design and Control Analysis of Reconfigurable Parallel Kinematic Machine Tools

2007 ◽  
Author(s):  
Dan Zhang ◽  
Zhuming Bi ◽  
Yunjian Ge
Keyword(s):  
Machine Tools ◽  
Geometric Modeling ◽  
General Concept ◽  
Control Analysis ◽  
Parallel Kinematic Machine ◽  
Modeling And Control ◽  
Theoretical Design ◽  
Parallel Kinematic ◽  
And Control ◽  
Parallel Kinematic Machine Tools

This paper introduces the theoretical design and control of reconfigurable parallel kinematic machine tools. First, the general concept of reconfigurable parallel kinematic machine (RPKM) and its growing demand are introduced. Second, the design of reconfigurable parallel kinematic machines is discussed and the geometric modeling of such structures is presented and explained. The potential applications of this type of machine are described. Finally, a case study for one of the proposed structures is conducted, including kinematic/dynamic modeling and control, some results and simulation are demonstrated.

Dynamic modeling and control analysis of a methanol autothermal reforming and PEM fuel cell power system

2017 ◽  
Vol 208 ◽  
pp. 703-718 ◽  
Author(s):  
Dimitris Ipsakis ◽  
Martha Ouzounidou ◽  
Simira Papadopoulou ◽  
Panos Seferlis ◽  
Spyros Voutetakis
Keyword(s):  
Fuel Cell ◽  
Power System ◽  
Dynamic Modeling ◽  
Pem Fuel Cell ◽  
Autothermal Reforming ◽  
Control Analysis ◽  
Modeling And Control ◽  
And Control

Dynamic Modeling and Control of Small Scale Wire Driven Robotic Joints with Wire Elasticity

2018 ◽  
Vol 13 (9) ◽  
pp. 1389-1396
Author(s):  
Muhammad Shoaib ◽  
Mohammed Saquib Khan ◽  
Muhammad Asim ◽  
Joono Cheong
Keyword(s):  
Dynamic Modeling ◽  
Small Scale ◽  
Modeling And Control ◽  
Robotic Joints ◽  
And Control

The Exploration of Dynamical Model and Control Analysis Based on DOF Small Scale Helicopters

2012 ◽  
Vol 529 ◽  
pp. 295-300
Author(s):  
Jie Yao ◽  
Yong Hong Zhu
Keyword(s):  
Moment Method ◽  
Rotation Speed ◽  
Similarity Theory ◽  
Flight Test ◽  
Small Scale ◽  
Control Analysis ◽  
Matlab Simulation ◽  
Test Platform ◽  
And Control ◽  
The Relationship

In order to stimulate the movement of small scale helicopters, DOF flight test platform based on the similarity theory has been thought out. Accordingly, considering the platform to be the researching object and combing the Lagrange-Euler equation with the equivalent moment method, the system kinetic model is worked out and the physical parameter is pre-estimated. The relationship between the lift force and the change of the rotation speed is acquired by the experiment with the fixed collective angle. According to the dynamic equation, a PID revised feed-forward controlling algorithm with robust characteristic was devised and the MATLAB simulation is applied to verify fast astringency and validity of the controller

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