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This paper will discuss the design and implementation of an integrated circuit controller for the development of a three phase reactive power compensator. An integrated circuit approach is desired as it provides for a more streamlined and economically advantageous design to reactive power compensation. Various methods are available to compensate reactive power levels utilizing different sources of...
In general telecommunication, control and signal processing, mathematical models of objects are often built from the physical process. In fact, some objects have complex physical models, therefore, accurate description of the object will results to large and high-order mathematical models. This causes difficulties for the computation and design. Hence, finding a lower-order model that still has the...
The multimodel and multicontrol approaches are two powerful techniques which are often useful in literature, to the analyse, the modeling and the control of complex systems. Indeed, the operating range of the process is partitioned into a set of operating regions. For each operation region a local model or/and controller is applied. The effective control applied to the process is a fusion of all these...
In grid-connected Photovoltaic (PV) applications, DC-links based on large electrolytic capacitors are used to attenuate voltage oscillations caused by the sinusoidal power injection into the grid, where the electrolytic capacitors introduce reliability problems. This paper proposes the unified modeling of the complete PV system in typical grid-connected operation conditions to design control strategies...
In this paper a T-S Fuzzy model (which originates from Takagi and Sugeno) is used to design a fuzzy logic controller (FLC) for non-linear systems. Fuzzy logic control systems consist of a plant and a fuzzy logic controller. The output of the FLC is made by weighted average defuzzification method So, the output of the FLC is a function of the degrees of membership of the fuzzy rules, and these degrees...
This research work presents supervised Artificial Intelligence based control technique for an inverted pendulum. The inverted pendulum system is a classic control problem that is used in research. It is a suitable process to test prototype controllers due to its high non-linearities and lack of stability. Most traditional controllers (feedback linearisation, rule based control) are based around an...
This paper mainly introduces the machinal design of the NC Wax Brush machine, including manufacturing principles of NC Wax Brush machine, mechanical composition and working principle. From the practice, this system shows its high efficiency, high precision, reliable operation.
Aimed at the controlled object's character of long delay-time, this paper presents a strategy that the long delay-time object is remodeled into short delay-time object through decreasing time-delay control, after the adoption of BP neural network PID controller to control the transformed system. In this paper, the three-layer BP neural network is designed and BP neural network PID controller algorithm...
In order to achieve remote control of service robots, a wireless intelligent control system is designed by combining radio frequency technology, MCU, ultrasonic sensor technology, image sensors and personal PC. Voice broadcasting, barrier avoiding by ultrasonic technology are realized wirelessly. Hardware modules and software design are partly given in the paper. Some experiments are carried out to...
According to the function of Palletized Loading System(PLS) and the operation principle of automatic loading mechanism, a fuzzy controller is designed with two input variables and one output variable in it and is achieved via the method of off-line inference and on-line looking up table in Programmable Logic Controller(PLC). The fuzzy controller is used to control the PLC's PWM signal and then control...
This paper considers the problem of global stabilization in network control systems (NCS) with continuous/consecutive loss of states. In this context, data packets loss is an important issue that must be adequately addressed. Compared with random data packets loss, continuous (arbitrary) data packets loss is much more challenging to deal with because it requires to consider the maximum degree of continuous...
PID control has been largely applied in the industry process control because of its robustness and easy realization, But it is very difficult to tune the three parameters of PID controller, which often leads to oscillation and overshoot of the controlled object. Due to no repetition and random of chaos dynamics, a method to search for PID controller parameters based on chaos variable is proposed according...
This paper presents a designing method of fuzzy control systems based on mixed programming of MATLAB and VC++ to realize the visual online modifying of the fuzzy control system and the algorithm of C code generating automatically by MATLAB/fuzzy control toolbox and MCC compiler. The codes are compiled into dynamic link library files to realize the seamless combination with the numerical control system...
An industrial plant, such as power systems, always contains parametric uncertainties. In the design of a controller the uncertainties have to be considered. Otherwise, if the real plant differs from the assumed plant model, a controller designed based on classical controller design approaches may not ensure the stability of the overall system. In this paper design of robust control for the UPFC controllers...
The design thought of human-simulated intelligent controller (HSIC) is introduced and the basic algorithm and control method of nine-point controller is put forward. The action force influence of nine-point controller on the dynamic performance parameters of system is studied. Meanwhile, the parameter tuning method of the controller in engineering design is deduced and the implementation process of...
In order to improve vehicle riding comfort and handling stability, a PID control system was designed. Regarding electronically controlled air suspension of a coach as the research subject, the PID control theory is applied to vehicle air spring suspension system. The PID control system is built up in Matlab/Simulink based on the a-quarter-vehicle model for simulating. The RMS of the vertical vibration...
In this paper, nonlinear H∞ controller problem in large-scale systems is investigated. The paper needs to find an energy function which satisfies the Hamilton Jacobi inequality. The energy function of the whole large scale system is considered to be the sum of the energy functions of the isolated subsystems. When the inequality is solved, a decentralized state feedback controller for each subsystem...
The paper presents the lateral acceleration control design of a missile model in which the parameters of fuzzy logic are designed to optimize the performance characteristics of the plant. The control scheme utilizes three fuzzy controllers to achieve the performances for lateral acceleration. The control scheme is based on classical compensator which its parameters are self-tuned by fuzzy logic. The...
This paper presents the control of a 3-DOF manipulator with joint angle feedback, the function of which was achieved by three mutually perpendicular joints intersecting at one point actuated by four parallel pulling force. Encoders were installed on each joint to obtain the control error caused by elasticity of cables and mechanism installation. Due to the output coupling problem of parallel mechanism,...
A simple low order controller synthesis is developed for certain classes of linear, time-invariant, multi-input multi-output plants. The order of these controllers depends on the number of right-half plane plant poles rather than the order of the plant to be stabilized. Furthermore, the controller's poles and zeros are all in the stable region with the exception of one pole at the origin for the integral-action...
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