Applied Mechanics and Materials Vols. 494-495

Abstract: Based on the analysis of basic dielectric EAP deformation and generation principle of dielectric, introduce the dielectric EAP actuator depends on the circuit implementation drive action and according to the dielectric EAP material has performance electrified deformation output force for missile aerodynamic drag characteristics, analyzes the feasibility of the application of dielectric EAP in the fuse, and puts forward the dielectric EAP used in Missile Fuse quasi research methods and technical route to take.

Abstract: By analyzing the technical requirements of cement brick machine control system, this paper put forwards a plan utilized PLC to realize the whole automatic control as the control core in making bricks. Practical technology production indicates that the hardware design method and the software compiling technique in this paper have achieved the design objective.

Abstract: This paper studies an efficient voice coil motor (VCM) in which permanent magnets (PMs) with Halbach array are mounted on the surface of its mover. This arrangement has the advantages of improving the force constant of the VCM significantly compared with non-Halbach array motor. Finite element analysis has been conducted to verify the feasibility and the strength of the design. Experiments finally prove the test results match the simulation results well and hence validate the proposed VCM has large force constant and high efficiency with the employed design.

Abstract: In the modern welding technology of metal materials, the welding robot is a very important factor. And the welding wire feeding device is a very important part of the welding robot. The welding wire feed systems stabilization and reliability is essential for the welding quality. The resistance is caused by the draw of welding wire and other factors, which is highly nonlinear and stochastic. The wire feed rate and welding quality will be severely affected by the resistance. This paper investigates the method controlling the system according to the observations of the resistance, speed and other factors. There are the complex environmental factors in the welding process, such as the strong magnetic field and high current field, which are random. So the robust control algorithm based on the state space model is designed to keep the welding wire feed speed stable under disturbances. The robust control method can improve the speed of response and eliminate the effect of wire feed resistance to the wire feed speed. Even when disturbed, the system can quickly reach a stable wire feed speed.

Abstract: During the manufacture of complete denture, the most important step is to design and generate the dental arch curve which adapts to the requirement of patients according to the jaw arch morphology of them. It is important to study the optimization method of the number and position of control point for the dental arch generator. On the basis of motion analysis of the dental arch generator, objective function, multivariate design and constraint function of control point optimization of dental arch generator is determined. Control points number and position of the dental arch generator is optimized. Simulation results verify the feasibility of control point optimization method.

Abstract: As the six-DOF electric platform, we establish the single-channel electric platform model on the basis of strongly coupled, nonlinear and strongly interferential AC servo motor driven platform system, and design the electric platform model to improve the dynamic response character and robustness. This study is based on the task space control policy to solve the control problem in various environments. Whats more, the introduction of dynamic surface avoids the acceleration feedback. The simulation result illustrates that it has effectively inhibited the system parameter uncertainty, and the impact of cross-linking coupling between nonlinear dynamics and DOF. Thus the system dynamic performance is improved, and the tracking capability is increased.

Abstract: This paper is based on the expansion of the CAN bus interface on ARM so that the embedded CNC system to achieve network, and display their respective advantages of field bus technology and embedded technology, so that to set up local area network embedded NC system model. The CNC system designed in this paper has characteristic as follows: high integration, flexible structure, good expansibility and the high performance-to-price ratio and so on.

Abstract: In view of the process of automatic flatness control and automatic gauge control that is a nonlinear system with multi-dimensions, multi-variables, strong coupling and time variation, a novel control method called self-tuning PID with diagonal recurrent neural network (DRNN-PID) based on Q learning is proposed. It is able to coordinate the coupling of flatness control and gauge control agents to get the satisfactory control requirements without decoupling directly and amend output control laws by DRNN-PID adaptively. Decomposition-coordination is utilized to establish a novel multi-agent system for coordination control including flatness agent, gauge agent and Q learning agent. Simulation result demonstrates the validity of our proposed method.

Abstract: This paper presents a design scheme of wireless communication network control robot system, the hardware architecture and planning a complete circuit diagram, and then completed the software design in detail, including the protocol algorithm, frame format and the program flow chart, finally has carried on the system performance analysis and testing.

Abstract: Networked Control System (NCS) is a class of feedback control system forming a closed loop through the communication network. Due to the nodes conflicts, poor network stability, limited data bandwidth and other uncontrollable factors in the transmission, network-induced delay is the main factor reducing system performance and stability. Studying the state feedback rules of Long Delay Network Control system, the author proposes Stability and stabilization method for Random Long Delay Network Control. The method models random long delay closed-loop network control system, compensate the delay and complete the network stability and stabilization. Finally, a numerical example is given to verify the validity of the conclusion.