Advanced Materials Research Vols. 846-847

Abstract: Actual coal mine as the background,used the method based on travel control and time control in the paper,using the programmable controller design of mine hoist S curve is given.at the same time, using the programmable controller and PC communication,The curve of the actual operation results show that in the upper machine,the results show that is correct.

Abstract: Unmanned aerial vehicles (UAVs) have been utilized to acquire imagery for disaster research and management in recent years. Because of the huge destructive power of natural disasters, it is usually difficult for UAVs to find plane to take off. In this paper, we proposed a hybrid system to control UAVs, taking off from inclined surfaces continuously. The relationship between the pitch angle and the altitude of UAVs has been analyzed. The experiments results show that our hybrid system and method are efficient and applicable in disaster situations.

Abstract: According to the characteristics and requests of laser-processing system, DSP chip TMS320F28335, as main control chip, is used to compute processing data and to realize interpolation algorithm. In order to meet the real-time requirements of laser-processing system, FIFO in FPGA chip EP2C8Q208C8N, as assistance, is used to buffer the processing information. At last, we have completed the design of a controller with five-axis coordinated motion and realized the real-time status monitoring of this system.

Abstract: Controller is the core of robot control system. This design uses a dual stc89c52rc single chip microcomputer control, which processes and responds very quickly,with the campaign, obstacle avoidance, automatic tracing function. This article describes the hardware and software design of control system.

Abstract: In this paper, a class of singular Markov switched systems with mismatched norm-bounded uncertainties and external disturbances is considered. A sufficient condition guaranteeing the existence of linear switching surface is given based on the linear matrix inequality method (LMIs). It is shown that the sliding mode dynamic on the switching surface is stochastically stable and satisfies performance. A sliding mode controller is designed to guarantee that the system trajectory is convergent to the linear switching surface. A numerical example is given to illustrate the effectiveness of the proposed method.

Abstract: The current study of network control stability system has become a very hot topic, the stability conditions of network control systems have also carried out the relevant research on double delay discrete model, its main target to the current actual situation, which carries out the related stability for network control systems with state time-delay. This paper uses the relevant stability theory, the sufficient condition of network control system stability are described under the time-delay discrete model, on the basis of relevant transformation, completing the evaluation for the network control system stability condition of double delay discrete model. Finally, through the relevant data, to carry on its effectiveness validated. The method has certain reference significance for the stability study of similar system, and provides a theoretical reference for the research on this problem.

Abstract: Heave compensation Control is usually used in vessels for offshore and deep-sea operations to reduce the adverse impact of unexpected vertical motion. This paper presents a control strategy for an active heave compensation system consisting of an electro-hydraulic system driven by a double rod actuator, which is subjected to parametric uncertainties and unmeasured wave disturbances. An adaptive robust controller is designed to guarantee the heave compensation error convergent to a bounded neighborhood around the origin. Simulations illustrate the effectiveness of the proposed control system.

Abstract: The structure and the control requirements of lithium-ion battery casing machine and the processes of casing were analyzed, and the automatic control system of cylindrical lithium-ion battery 18650 casing machine was designed based on Mitsubishi PLC. The control program of lithium-ion battery casing machine was designed using GX Developer programming software, and the man-machine interface program of the equipment was designed using GT Designer software, in order to operate and monitor the equipment.

Abstract: More Electric Aircraft (MEA), which is the developing trend of the next generation of aircraft, put forward high demands on the electric power system. Cyber-Physical Systems (CPS) are a kind of novel intelligent systems with computation resources and controlled physical objects tightly integrated and interacted in the future network environment. CPS have the characteristics of real-time, synchronous, security, efficient and autonomous. This paper first elaborates the notion, characteristics, operation mechanism and technical challenges of CPS. The strategy of CPS-based next aviation electric power systems is presented. Then, the architecture of aviation electric power cyber physical systems is established. Finally, key technologies of aviation electric power cyber physical systems, including data bus, control strategies, energy management, security analysis, modeling and simulation, standardized and so on, are discussed. And directions are pointed out to offer a reference for the application of CPS in aviation electric power systems.

Abstract: The paper studies the problem of tracking control for flight simulator servo systems, one typical CPS, with parameter uncertainties and nonlinear friction compensation. Methods of adaptive global sliding mode control and backstepping control are respectively proposed to realize the control of virtual rotational speed and position tracking. Adaptive backstepping global sliding mode control strategy for flight simulator servo systems is proposed and its stability is analyzed. Simulation results show the effectiveness of the proposed method, which could achieve the precision position tracking performance and eliminate the chattering.