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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,...
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...
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...
This paper introduces a rail length-limited parallel-coupled cart-pendulums system which is one of the morphs from the inverted pendulum family. A swing-up control strategy based on optimization algorithm (pattern search) instead of manual tuning has been proposed for such kind of system to swing the pendulums up cooperating with the original stabilizing controller. The blockset-view of the system...
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,...
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...
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...
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,...
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...
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,...
With the large-scale development and application of photovoltaic power, direct current (DC) injection in photovoltaic(PV) power generation system to public power grid is drawing more and more attention. A new method to suppress the DC injection in grid connected PV system is presented in this paper. With the combination of new detection circuit topology and power amplifying circuit topology, the goal...
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...
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...
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...
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...
The suspension system plays a crucial role of rail vehicles. The fault detection of the suspension system is an effective way to ensure the security, stable operation of rail vehicles. This paper concerns the fault detection issue of rail vehicle suspension systems with the extended form of Partial Least Squares(PLS), which is Multi-block Partial Least Squares (MBPLS). The signal information used...
This paper presents a new framework for the formation control of nonholonomic intelligent vehicles combining the leader-follower and cascade system together. The formation model is obtained based on the leader-follower approach. The controllers are designed by using global fast terminal sliding mode control technique for the leader who tracks the reference trajectory and back-stepping method for the...
Taking the 1000MW ultra-supercritical once-through boiler as a research object, the combustion process of boiler is analyzed through principles of energy transferring, heat exchange, and mass flow balances. Since the complete and accurate model of boiler combustion is the basis of performance study and optimizing control, a mechanism mathematical model of boiler combustion control system is built...
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...
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...
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