Research of Closed-Loop Control for Underwater Heat-Engine Propulsion System

Closed-loop control for underwater heat-engine propulsion system is an essential solution to improve the control performance and optimize the autonomous underwater vehicles (AUV) trajectory. This paper minutely gives the project of the closed-loop control proposal we propose for the propulsion system, and puts forward a control arithmetic according to the mathematical model that has been build for the system. Even more remarkable is that a series of experiments are carried out on the semi-physical simulation test bench to verify the control arithmetic. The experimental results and the analysis indicate convincingly that the control arithmetic can compensate for the navigation depth and attitude of AUV, thus making the propulsion system get the ability of tracking the variable working condition. Therefore, the power system gives full play to its potential.

Study on the Intelligent Control Technology for Wet Dual Clutch Transmission

An intelligent control system of wet dual clutch transmission was presented in this paper,and an intelligent control arithmetic based on neural adaptive PSD was established to realize precise control of clutch pressure.The transfer characteristics of clutch torque were analyzed,and the clutch torque model was established Due to the characteristic of the clutch control valve,the clutch pressure was precisely controlled in the neural adaptive PSD controller. The shift tests showed that the intelligent control arithmetic based on neural adaptive PSD had good adaptive ability,which could meet the control requirements of wet dual clutch transmission.

The Application Research of Pumps Operation Optimal Control Arithmetic for Saving Energy in SZWG

In order to solve the problem that how to adjust the operation of all units of the pump station and control the speed of pumps on time, in the changing condition of manufacture procedure, to optimize the pumps combination and adjusting-speed strategy, this paper builds a mathematic model of pumps operation control system, adopts the method of system identification to calculate system parameters on-line, and brings forward a optimal control arithmetic for saving energy. The data analysis of running spot indicates that the arithmetic can save energy of pump station obviously, and also has the good function of equipment maintenance, so it has the high engineering application value.

The Design of PID Controller of Turntable Based on BP Neural Network

As the parameters of traditional PID are fixed, the application areas are limited. With its research focus on the servo control system of the three-axis flight motion simulator table and the mathematical model of the brushless DC motor which is used as the drive mechanisms of the heading turntable. Put forward the traditional PID control arithmetic and NN PID control way arithmetic based on model forecast. MATLAB simulation is conducted to test stepping and sine input signals. The test results show that NN PID control way arithmetic is better than traditional PID control arithmetic and it is important to enhance the efficiency of flying simulator contro1．

The Application in TheTubular Furnace Control System Based on OPC Technology

In the industry of petrochemical, tubular furnace is a kind of energy-consumption device, therefore it appears especially significant for its controlling. Usually, it adopts kingview software for simple monitoring, which hardly lowers consumption. Moreover, because of the limitation of compiling control arithmetic, it becomes unrealistic for complicated control requirements. While MATLAB is equipped for powerful function of numerical analysis and computing, it can accomplish the designation for the complex intelligent controller and data analysis processing. The two complement each other can realize the real-time control of combining Kingview with MATLAB, but the key technology is to realize the real-communication of them. In this paper, OPC technology based on the standard interface is illustrated, and on this basis, the program of the real-communication between King view and MATLAB based on OPC is introduced. The thesis takes tubular furnace temperature control before and after preheating for example, and finally proves the advantages complementation between kingview and MATLAB, which supplies an efficient path for realizing complex control arithmetic.

Fuzzy Control Strategy Based on Mode Identification Used in Semi-Active Control

In this paper, a new fuzzy control arithmetic based on mode identification used in semi-active control is put forward, the mode is differentiated by the eigenvectors constituted with drift, velocity and their resultant, and then different fuzzy control strategy is applied. Moreover, by numerical simulation, the control efficiency of the new control arithmetic is compared with semi-active control using sign control law and some passive control.