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This paper deals with the control problem of a dc-dc boost converter whose operation takes place in an uncertain environment. The proposed nonlinear controller achieves the desired performance in a number of different situations. Uncertainties, unknown but bounded, are considered to be present in the load as well as in the input voltage. Effective control results as long as certain matching assumptions...
It is one of the most frequently stated problems for solid oxide fuel cell (SOFC) system with rated load that output voltage should be kept constant under the fuel utilization rate constraint. Dual-mode predictive control is one of the most popular approaches in process control due to its outstanding advantages such as handling constraints and ensuring close-loop stability. Based on the identified...
Distributed energy resources (DERs) and smart loads have the potential to provide flexibility to the distribution system operation. A coordinated optimization approach is proposed in this paper to actively manage DERs and smart loads in distribution systems to achieve the optimal operation status. A three-phase unbalanced Optimal Power Flow (OPF) problem is developed to determine the output from DERs...
The large-scale unit power plant is a typical multiple-inputs and multiple-outputs system, which is of time-delaying, time-varying, nonlinear, strong coupling, and dynamic characteristics variation characteristics. The coordinated control system is the most important and complex system in thermal power plant, and its control effect affects the operating condition of the unit. The PID neural network...
The electrical energy cannot be stored in large scale because we have no resource to store it in bulk. It has to be produced, transmitted, distributed and used instantly. However the nature of the load is variable with respect to time. The power generating plants are designed for maximum demand. It means the gap between peak load and the average load is high which results in greater per unit cost...
The multi-function loader is a complex system in which mechanical, electronic, hydraulic and control systems are assembled. It has a significant multi-disciplinary coupling characteristic. The traditional single-domain modeling simulation tools can not do the simulation and optimization of overall performance for modern complex products. In view of this situation, the paper studied the modeling methods...
With the development of humanoid robots, lightweight construction and energy efficiency play an important role. In state-of-the-art processes and methods concerning structural optimization it is assumed that there exists a set of external loads or load functions acting on the part. But humanoid robots are very complex mechatronic systems. The fact that the system's dynamic properties and its overall...
With the development of humanoid robots, lightweight construction and energy efficiency play an important role as these mobile, dynamic systems have to work self-sufficiently. The application of computer-aided (CAE) methods in the development process is one possibility to achieve the required weight reduction. On the basis of a classical topology optimization carried out on the robot ARMAR III, an...
Complicated control systems are used in many safety-critical applications, such as in cars and airplanes. Due to the nature of these systems, verification can be very difficult to do analytically or algorithmically. The only feasible analysis and verification method is often simulation. The generation of good test cases that can expose flaws in the controller design is therefore of great importance...
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