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Location tracking control system is developed for an unmanned small scale helicopter using sliding mode controller and cascade controller. The developed control system consists of an inner loop and outer loop. The inner loop control system determines the attitude of the helicopter based on the equation of motion with sliding mode controller. The outer loop control system based on the linear model...
In an unstructured environment, there are many challenges for obstacle detection. This paper presents an improved method to detect obstacles based on stereo vision in unstructured environments based on salient obstacle extraction. This method can achieve same or higher level of accuracy of obstacle detection compared to the existing salient obstacle detection with significant reduction of computation...
Based on a simplified mathematical model of a certain type of unmanned helicopter (UMH), this paper realizes its longitudinal hovering attitude control Based on LQR (linear quadratic regulator). This paper starts with practice, and designs Q, R parameter search algorithm for this type of unmanned helicopter. Simulation results show that this algorithm can find the optimal Q, R parameters, so it has...
In the purification process of solar grade silicon with metallurgical technology, the stirring device play a crucial role. Electromagnetic stirring (EMS), due to not bringing into extraneous components, and achieving the control of variety of stirring methods and intensity, is seen as an ideal stirring method. The author established macro-transport physical coupled mathematical model in the process...
Multivariable dynamic matrix control (MDMC) has been widely used in chemical process industry. In this paper, multivariable dynamic model of the first hydrolysis tower is build based on the reaction mechanism, MDMC algorithm with 4 inputs and 4 outputs is also derived and constrained MDMC controller is designed. Simulation results show that, MDMC could improve the dynamic performance and resistance...
To improve the shift quality of the automatic transmission (AT). The oil pressure changing rule need be researched deeply, which was done in this paper by modeling and simulating using ITI-SimulationX software. This paper completed the optimized design of clutch by using the fuzzy theory and main objective method with optimization toolbox of MATLAB. The wet multi-plate clutch is commonly used. According...
Aiming at current water resources utilization situation of Nanjing, the main indicators that would have an impact on the sustainable utilization of water resources of Nanjing is analyzed in this paper. According to the contribution of the indicators to the system, three-index method is used to determine influence degree of each indicator to the evaluation object and the weight of each indicator, and...
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