Applied Mechanics and Materials Vols. 220-223

Abstract: Ship roll motion control is necessary due to the fact that ship roll motion degrades ship safety performance. In order to reduce roll motion and correct heading during sailing, fin/rudder joint control system is designed which is based on the rudder roll reduction and fin stabilizer. The fin/rudder joint roll reduction controller is designed by H∞ mixed sensitivity function. The PID autopilot is designed to correct heading and the Kalman filter is used to restrain disturbance during sailing. The simulation results show that both roll reduction and course-keeping control achieve good control effect.

Abstract: Interception is a very important technological movement in robot football match. In this text, prediction of sport among the playing area, set football robot sport model, we have put forward the scheme of realizing interception movements fast，effectively ,and have verified the feasibility of the scheme in the real system.

Abstract: Abstract. This paper proposed the PLC (Programmable Logic Controller) for the control of nuclear fusion, fuzzy control technology, PWM (Pulse Width Modulation) control method, to SPBP (Solar Photovoltaic Battery Plate) for intelligent control, the SPBP in photovoltaic power generation process," always and automatically tracking the strongest solar radiation", full" PV" role, so as to achieve the best effect of power generation of the research methods and technical route. The design for the modern SPBP intelligent" tracking" control system provides a novel and practical design case. Experimental results show that this control system, the design scheme is correct and feasible, and the performance-price ratio is very high.

Abstract: A design of street Light monitoring system is put forward in this paper, which is based on Zigbee and AC chopper technology. In this design, the wireless network control can be realized for single light and the lights of any combination, the remote monitoring can be achieved by means of the upper computer software, and the extremely energy-saving can also come true in according to the AC chopper technology.

Abstract: An open numerical control system was built based on DMC movement controller. The system was simple and practical for most common CNC machine tools transform. The open numerical control system was introduced, the hardware connection and user interface program were designed combined with CA6140 lathe. The constructed CNC system has general functions of CNC system, the jog and interpolated motion can be realized, and this open control system can reach the requirements of customer. The experiments indicate that the open numerical control system can be applied to other machine tools, it has certain efficiency and usability.

Abstract: Welding robot has the advantages that welding quality stability, high efficiency, improving the working conditions of workers, and it is widely applied in the manufacturing sector. A six degree of freedom welding robot configuration is presented in this paper. The kinematics model of the robot is established by DH method and its kinematics was analyzed. At last the error model of the position-pose of the robot end-effecter, produced by the influence of robot joint movement variables deviation and structure deviation, was established by the differential method. The deviation influence on the end-effecter was analyzed by numerical simulation. The results prove the error model is right, and they will provide a reliable basis for robot position error compensation and accuracy optimum design.

Abstract: As a kind of innovative teaching system, the fischertechnik model provides a best carrier for educational innovation and experimental innovation. Based on the fischertechnik model, we design the indoor golf robot to pick up the ball to put it properly. The paper’s idea fills the technical gap of automatic picking up the ball of indoor golf in the current market and briefly introduces a kind of structure design and its prospect.

Abstract: The sampling flow will be decreased by the weakness of filterable membrane permeability after the dust sampler working for period of time. It seriously affects the measurement accuracy, so keeping the dust sampler working under the constant gas flow is important. Gas flow can be adjusted accurately in time to ensure constant flow based on single neuron adaptive PLC algorithm and PWM technique. Apply ZigBee wireless communication technology on indoor positioning and remote monitoring.

Abstract: Based on iterative learning control (ILC) algorithm with forgetting factor, the thought that the forgetting factor is a function of iteration numbers is proposed in this paper, which has simplified the convergence conditions. And the convergence analysis is given. Then, the study results of this paper are applied to a class of linear systems with multiple time delays and simulation results show that, under the improvements of the convergence conditions and the reasonable choice of forgetting factor function, the PD-type iterative learning control algorithm with forgetting factor applied to the linear systems with multiple time delays in this paper has effectiveness and superiority.

Abstract: A new line-tracking inspection device which can move on the high voltage transmission lines and control on the ground by people is presented in this paper. The device has three mechanical arms, every arm can lift and rotate automatically, and manipulator can open and close automatically. The flexible design is used in lower riding wheel, this design can make the upper and lower riding wheel automatically adjustment, so as to adapt to the change of wire diameter. Automatic checking and autonomous negotiating obstacles are realized successfully in this device. The biggest breakthrough is that its automatic on-line or off-line can be completed by operator operating the auxiliary tools on the ground. This article uses the Pro/E modeling software set up the virtual prototype of the line-tracking inspection device based on characteristic parameter model. The process of on-line or off-line automatically and the process of negotiating obstacles are discussed in this paper. Using the product of exponentials formula based the on screw theory, the kinematics analysis is processed in this paper. The forward and inverse solution of kinematics equations is presented and at last the Jacobian matrix is given. The results of experiments with simulation transmission lines demonstrate that the device has realized the specified work tasks and runs smoothly.