Papers by Author: Xiao Dong Zhang

Abstract: BCI and exoskeleton robots were introduced respectively in the first, and then the advantage of BCI in the exoskeleton control compared with other control method was described. Hardware and software was designed respectively in the paper: in order to achieve the hardware portable that used for gaining EEG, Emotiv collecting device and radio devices was used in the designed; a new way to judge the intentions of human body movement based on cumulative average method and nonlinear dependent method was put forward. Furthermore, a variable factor- was proposed to realize the motion models prediction of different accuracy requirements.

Abstract: In the exoskeleton robot motion capture system, the sensor characteristics not only should be small in size, light in weight, low power consumption, but also requires easy to wear, reliable real-time. In this article, an exoskeleton robot real-time control system is designed based on the existing fiber-optic sensor. The experimental data is analyzed by hidden Markov model. The system can distinguish between the human bodies six sports: rest, walk, run, squat, stand , on the slope, and it can realize the real-time control on the exoskeleton robot.

Abstract: In this paper, design on a small and high-efficiency sprinkler irrigation system is put forward to make it more effective in saving water after it is argued how the humidity of soil effects the growth of the plant. This system is designed to control the opening of valves to achieve the target of saving much more water based on the measurement of soil humidity. After having a discussion on the method of control, design on the hardware and the software has been finished. This new system could be used in the garden or the lawn, where the irrigation area is relatively small. In addition, this system could also be useful in the irrigation of the greenhouse.

Abstract: In order to improve the stability and reliability of the logistics handling robots, some optical fiber sensors were used to achieve the automatic navigation and tracking of AGV (Automatic Guided Vehicle) in this paper, and its key technology were also investigated. On the basis of adopting colored ribbon as tracking path, the layout of optical fiber sensors array is designed, and then a control algorithm based on MCU was presented for AGV. Finally, the practicality and effectiveness of intelligent tracing control technology were discussed, respectively.

Abstract: With the development of underground rail, the problem that vehicle vibration affects the vehicle’s life-span and harms the health of the passenger has been concerned. In this paper, a vibration test system has been formed with data collecting instrument and acceleration sensors to collect the signals of the metro vehicle floor when it running at the ATO (Auto Train Operation) mode in the tunnel, Analyzing the regulation of vehicle vibration signal change that come with the change of the route condition, such as curve, slope, and so on. Obtain the relationship between the road condition and vehicle vibration. The analysis result shows that, the vehicle vibration not only be affected by the structure of the vehicle itself and the geological condition on which the track laid, but also has close relationship with the route condition.

Abstract: The tip clearance flow of axial turbomachines is important for their aerodynamic and maneuver performance. And the tip clearance gap leakage flow is of continuing concern in reducing efficiency losses that occur within turbines. In order to gain significant reductions in emissions and specific fuel consumption as well as dramatic improvements in operating efficiency and increased service life of aero-engine, variation mechanism of blade tip clearance was analyzed and the equation of dynamic clearance was shown firstly, then the effect of rotor vibration in clearance variation which include flight loads and engine loads was studied in this paper; based on the dynamic measurements of blade tip clearance, a method that ensure tip clearance at optimal state in given mission profile through active rotor vibration control and active tip clearance control was presented. Besides, fuzzy control theory was used to solve the high nonlinear variation of tip clearance. The analysis result shows that this technique is useful.