scholarly journals Modeling, Controller Design and Simulation Groundwork on Multirotor Unmanned Aerial Vehicle Hybrid Power Unit

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7125
Author(s):  
Matija Krznar ◽  
Danijel Pavković ◽  
Mihael Cipek ◽  
Juraj Benić
Keyword(s):  
Control System ◽  
System Design ◽  
Power Unit ◽  
Power Distribution ◽  
Rotational Speed ◽  
Controller Design ◽  
Combustion Engine ◽  
Control System Design ◽  
Proportional Integral ◽  
Hybrid Power

This paper presents the results of modeling, control system design and simulation verification of a hybrid-electric drive topology suitable for power flow control within unmanned aerial vehicles (UAVs). The hybrid power system is based on the internal combustion engine (ICE) driving a brushless DC (BLDC) generator supplying the common DC bus used for power distribution within the aircraft. The overall control system features proportional-integral-derivative (PID) feedback control of the ICE rotational speed using a Luenberger estimator for engine-generator set rotational speed estimation. The BLDC generator active rectifier voltage and current are controlled by proportional-integral (PI) feedback controllers, augmented by estimator-based feed-forward load compensators. The overall control system design has been based on damping optimum criterion, which yields straightforward analytical expressions for controller and estimator parameters. The robustness to key process parameters variations is investigated by means of root-locus methodology, and the effectiveness of the proposed hybrid power unit control system is verified by means of comprehensive computer simulations.

H∞ Structural Controller Design Based on Absolute Acceleration Measurement

1995 ◽  
Author(s):  
Nariyasu Yamada ◽  
Akira Nishitani
Keyword(s):  
Control System ◽  
System Design ◽  
Structural Control ◽  
Controller Design ◽  
Design Procedure ◽  
Control System Design ◽  
Building Structure ◽  
Acceleration Response ◽  
Acceleration Measurement ◽  
Absolute Acceleration

Abstract This paper discusses the H∞ structural control system design procedure for a building structure on the basis of the measurement of the top floor absolute acceleration response. The discussion covers the design procedure from its basic concept to its details. The validity of the presented H∞ controller design is experimentally demonstrated.

scholarly journals Proportional-integral-plus (PIP) control of time delay systems

1998 ◽  
Vol 212 (1) ◽  
pp. 37-48 ◽  
Author(s):  
C J Taylor ◽  
A Chotai ◽  
P C Young
Keyword(s):  
Control System ◽  
Time Delay ◽  
System Design ◽  
Design Methods ◽  
Smith Predictor ◽  
Delay Systems ◽  
Control System Design ◽  
Time Delay Systems ◽  
Climate Control ◽  
Proportional Integral

The paper shows that the digital proportional-integral-plus (PIP) controller formulated within the context of non-minimum state space (NMSS) control system design methodology is directly equivalent, under certain non-restrictive pole assignment conditions, to the equivalent digital Smith predictor (SP) control system for time delay systems. This allows SP controllers to be considered within the context of NMSS state variable feedback control, so that optimal design methods can be exploited to enhance the performance of the SP controller. Alternatively, since the PIP design strategy provides a more flexible approach, which subsumes the SP controller as one option, it provides a superior basis for general control system design. The paper also discusses the robustness and disturbance response characteristics of the two PIP control structures that emerge from the analysis and demonstrates the efficacy of the design methods through simulation examples and the design of a climate control system for a large horticultural glasshouse system.

scholarly journals Robust Control System Design for Multivariable Plants With Lightly Damped Modes

2007 ◽  
Author(s):  
D. Nelson-Gruel ◽  
P. Lanusse ◽  
A. Oustaloup ◽  
V. Pommier
Keyword(s):  
Control System ◽  
System Design ◽  
Transfer Matrix ◽  
Transfer Functions ◽  
Controller Design ◽  
Open Loop ◽  
Bench Mark ◽  
Control System Design ◽  
Stabilizing Controller ◽  
Robust Control System

A robust controller design is proposed for the active suspension system bench-mark problem. The CRONE control system design used is extended to unstable multivariable plants with lightly damped modes and RHP zeros. Decoupling and stabilizing controller K, is achieved for the open-loop transfer matrix. Fractional order transfer functions are used to define all the components of the diagonal open-loop transfer matrix, β. In defining the fractional open-loop transfer function β0i some elements of the plants, G0 and its inverse must be considered to achieve the stable controller. Optimisation provides the best fractional open-loop βopt. Finally, frequency domain system identification is used to find controller K=G0−1 βopt.

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