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In order to meet the high-precision positioning requirements of permanent magnet linear synchronous motor (PMLSM) servo system, a disturbance compensation method of position controller with optimal parameter disturbance compensating controller is proposed. It ensures that the system has a good transient response and a good load disturbance rejection capability. The position controller enhances the...
In order to alleviate the city traffic pressure, reduce the delay time of vehicles on the road, this paper design a traffic monitoring system based on RFID. Integrated climate, road conditions and power control all the factors considered, this papers choose to use passive tags to identify the vehicle. Multifunctional integration RFID reader reads the tag information stored inside the vehicle effectively,...
In this paper, a method for calibrating and compensating the errors of magnetometer is proposed, in which the error sources consist of constant bias, scale factors, nonorthogonality, hard iron effects and soft iron effects. Related estimation algorithms were proposed, calibration procedure was presented. Two dimensional and three dimensional cases are considered, the efficiency of the proposed algorithms...
The grid-connected photovoltaic (PV) power generation is expected to be more widespread and paid more attention. In order to suppress the high-frequency harmonic current of PV grid-connected inverters, LCL filter is utilized to lower the current total harmonic distortion rate. On the basis of LCL filter, double-loop current control scheme with the quasi proportional-resonant method is designed. The...
In recent years, wind power which is an intermittent and random energy source affects the frequency stability of automatic generation control (AGC) system with the large-scale wind power integration. So, it is necessary to improve the conventional frequency control method and model. Firstly, a dynamic wind farm model is set up based on wind turbines clustering for the accuracy of data in this paper...
In order to analyze a five-degree-of-freedom (DOF) manipulator for special applications, this paper establishes its kinematics model firstly, and then analyzes its workspace and characteristics, and gets its inverse kinematics solution. Finally, its advantages and disadvantages are presented. On the basis of kinematics analysis, combining with the typical operating cases, we point out the existing...
Circulating fluidized bed boiler (CFBB) develops quickly for a large range of fuels, rapid adjustment to load instruction and low-emissions. But its combustion system is sophisticated with large time-delay and multi-input multi-output coupling together, which make it hard to control. Based on analyzing an existing 2×2 transfer function matrix of the main steam pressure and the bed temperature, a partial...
The paper describes several model, where the computer-aided software design system BPsim.SD was used. Some of them were existing projects with available output data, and were used for system verification as the baseline deployments. Namely, the University Information System is the project of such kind, and has been developed earlier, partially by authors, who had all the initial data to be able to...
Crane is one of the indispensable tools in the engineering application, and it is one of the multi-axial drag lifting work systems. In this paper, the idea of distributed physical net modeling is adopted to the modeling and simulation of simplified multi-axial drag lifting work system which is based on DC motor, a way of applying in the practical application is put forward. After building a model...
When human gravity center was out of equilibrium owing to disturbance, there would be a dynamic process to equilibrium state. This process comes with neural system and motion system. In order to simulate this process well and truly, this paper provides a candidate method based on SimMechanics, where under the premise of local linearization of motion system and PID controller abstracted for neural...
Frequent construction safety accidents worldwide not only result in increased investment cost, but also seriously affect the sustainable development of the construction industry and social stability. Combined with lean thinking, the effectiveness of lean management was explored to reduce all kinds of construction accident with injury and improve enterprise performance. The relation between lean thinking,...
A unified observer of high order disturbances in time series expansion for a class of nonlinear systems was proposed in this paper. The stability of a special observer from selecting the nonlinear weighted function was analyzed for constant disturbance. Then the constant disturbance observer algorithm was generalized to ramp disturbance and high order disturbances in time series expansion by incorporating...
The planning and scheduling problems of steelmaking - continuous casting - hot rolling (SCH) manufacturing process are hard to solve with traditional optimization approaches. As for the limitation of human ability, manual plans and schedules can not guarantee quality, robustness and material balance between processes. With the rapid development of computer simulation theories and virtual reality technologies,...
In order to meet the need of information under the condition of military training, this paper analyzes the battlefield environment of two-dimensional posture display function demand, on the system architecture based on the detailed analysis of system structure, the use of UML are analyzed and designed, and the system static model, dynamic model and visualization modeling, combined with the field data...
Transmission dynamics has become one hot issue in complex systems and complex networks. It is very urgent to study the influences on the communication process based on the network topology structure. This paper focuses on modeling and control strategy of epidemic transmission SIR (Susceptible-Infected-Recovered) with community structure of networks. Firstly, network community structure features are...
In this paper, the design of simulation software and control system for unmanned aerial vehicle (UAV) during aerial refueling is proposed, in which the simulation software is constructed under Microsoft Visual Studio 2010, and control system is designed based on the linear control theory and assumption of relatively small perturbations during the docking. The proposed model has the merits of explicitly...
To improve the performance of the glutamic acid fermentation process, a multivariable adaptive inverse control method is proposed considering nonlinear and multivariable coupling of the fermentation process. According to the characteristics of the fermentation process, the kinetics model and the simplified model are given and the reversibility of the model is analyzed. An adaptive inverse control...
Vector time series autoregressive moving average predictive and wavelet neural networks PID method is proposed in order to solve the requirement of optimal parameters real-time calculation in various control fields (engineering systems, economics systems, etc.), especially to solve the instability and poor control performance problem of control parameters online-tuning in engineering practice. Based...
The design objectives of PID controller is to choose the reasonable parameters which can make the system meet the design requirements. Specific to the problem of the controller parameter optimization of flight control system, the classic tuning method of PID controller parameters is cumbersome and need repeating trial. What's more, the controller parameters cannot be guaranteed to be optimal. Therefore,...
In order to prevent the electric vehicle wheels from spinning out on low-friction coefficient [low-μ] roads, the electric vehicle traction control system (TCS) based on active disturbance rejection control (ADRC) is carried out in this paper. Firstly, we set an optimal longitudinal slip ratio as the control target, and consider the motor current and load torque as internal and external disturbance,...
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