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As the energy crisis and the pollution are serious, the exploitation of solar has received more and more attentions. The configuration and principle of photovoltaic grid-connected power system are analyzed in detail. The method of maximum power point tracking is designed and the control principle of voltage and current double closed-loop is analyzed in this paper. At the same time an improved phase...
The heat which electric furnace smelt iron alloy is needed is provided by electrode extreme. When the position of electrode extreme is perfect, the power consumption and productivity of production unit are in good state, so take control of electrode position is very important. Electrode regulator system of ore smelting electric arc furnace is a nonlinear, multivariate, parameter-time-varying system,...
This paper uses a “smart car” as the platform for intelligent control research. MC9S12DG128 is chosen to be the main control unit, which is produced by Freescale Semiconductor. A smallest intelligent control system is designed in this paper and it implements smart car's self-tracking driving using path identification algorithm. In this paper, the intelligent control study of the smart car includes:...
Due to the lack of widely stable and reliable water quality parameters on-line instrumentation, it is difficult to implement closed-loop control of water quality and optimize the operation for wastewater treatment plant. In this paper, a nonlinear dynamic soft-sensing multi-model based on PLS is proposed to solve the problem of multi-variable, non-linear and time-varying uncertainty in wastewater...
In this paper, the relation between Input-output pairing and minimum variance (MV) index as a performance index is studied. Control structure selection or the input-output pairing problem is a key step in designing decentralized controllers for multivariable. The Relative Gain Array (RGA) is an important tool for the control structure selection procedure. In this study, RGA is calculated and decentralized...
In this paper, the delay-dependent non-fragile robust H∞ control for a class of fuzzy descriptor time-delay systems with norm-bounded parameter uncertainties is investigated. First, a new delay-dependent non-fragile H∞ stabilization method is proposed via a state feedback fuzzy controller, which guarantees the closed-loop nominal system to be regular, impulse free, asymptotically stable. Then, sufficient...
This paper proposes a new reconfigurable flight control system design methodology using the optimal eigenstructure assignment with constrained output feedback. An integrated performance index is given in this methodology which combines the performance index of the reconfigured eigenstructure and the performance index of the stability of the reconfigured closed-loop system. Then particle swarm optimization...
This paper deals with the problem of robust stabilization for a class of uncertain networked control systems (NCSs) with random time delay via the static output feedback control. A novel switching control approach is proposed by modeling the random delay as a Markov process. The resulting closed-loop system is a Markovian jump linear system (MJLS) with random delay. Based on Lyapunov stability theorem...
In this paper, we discuss the modeling and control of a class of networked control systems (NCSs) with packet dropouts. For the case that there may be packet dropouts in both the backward and the forward channels in the communication network, the closed-loop NCSs is modeled as a discrete time switched system with four subsystems. By using the average dwell time method, sufficient conditions for the...
A design proposal of BLDCM remote closed loop control system is proposed. There is a central controller and a networked control interface in the system. The central controller realizing the motor speed control remotely, is composed of TMS320F2812 DSP and Ethernet controller RTL8019AS. The embedded Ethernet control interface includes C8051F020 MCU and Ethernet microcontroller CP2200. The dual-closed...
Hardware-in-loop simulation (HIL) of underwater heat-engine system is more believable than a mathematic simulator. In-depth presentations of a backpressure simulation device, a load pressure simulation device and a rotating rate controller are given which make up of the HIL of underwater heat-engine system. Section 1 of the full paper establishes and analyzes the mathematical model for such a HIL...
A new robust control arithmetic is put forward to deal with the uncertain attitude model of small unmanned helicopter (SUH). Firstly, the attitude matrix model of SUH is denoted by the block diagonally radioactive matrix. Secondly, based on the restriction of the closed-loop pole and variance constraints, a new robust control, which has the characteristic of system input energy limited, is put forward...
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