Applied Mechanics and Materials Vols. 341-342

Abstract: In order to overcome the single event function interrupt and SA failure, this paper proposes and implements a new way to design circuit, i.e. dynamically reconfigurable adaptive circuit design method. We load a Microblaze which is a soft CPU in FPGA as a motion control part of the circuit, as well as use some place of FPGA as evolution pool to find target circuit. Microblaze known input and the corresponding output applies genetic algorithm to search evolution pool. Depend on it, we successfully design and implement a DC Motor control system, besides, we carry out theoretical analysis on this circuit reliability and simulate circuit function repair test of SA fault, the result demonstrates that compared with the traditional circuit, this circuit and has a high reliability.

Abstract: In this paper, the formation problem of UAVs swarm is studied based on a combination of the potential functions. On the basis of mathematical models of the traditional artificial potential field,a new formation potential function is proposed. The potential functions is merged using null space control strategy which is capable of dealing with conflicts among elementary potential functions and avoid local minimum problem. The results achieved by computer simulations suggest that the control approach can produces good effect.

Abstract: Automatic identification technology becomes a urgent need of production and life, authentication technology gained worldwide attention because of its high reliability, fingerprint identification technology which applied to social security system can accurately determine protects a person's identity and prevent the phenomenon of the pension of falsely claim that solves this one long-term puzzling problem. Based on the preeminent fingerprint identification algorithm is improved, and combining with actual demand the improved algorithm, Using the fingerprint identification and IC card combination way realization of distributed fingerprint authentication system collection. Through the practical efficiency test analysis proves the whole system is feasible, and the running effect is good by practical application.

Abstract: According to the requirement of smooth operation and accurate positioning for DC speed regulating system of mine hoist, a new speed control system that based on double closed-loop of Fuzzy-PID was designed. The best control scheme for mine hoist was also validated by simulation comparison with conventional PID control system in the MATLAB/Simulink. The result showed that the proposal was feasible and had practical value.

Abstract: This paper introduces a well-used long range displacement measurement system. The advantages of the system are that the sensor's measurement range can be extended by optical linear scale with a simple structure, and the distance between the measured object and the sensor can be automatically adjusted. The feasibility of the measurement system is tested by simulation experiments, and the accuracy performance is evaluated with respect to both repeatability error and linearity error. The experimental results show that the displacement measurement system reaches a level of accuracy which is sufficient for operational requirements.

Abstract: In order to improve the fault diagnosis precision of electron system, a method based on wavelet packet transform and SVM was proposed. Fault diagnosis method based on SVM was researched on in this paper because of the complexity of electron system, difficulty of fault diagnosis method and special advantages of SVM. Wavelet packet transform is used to extract fault features from the signal of the circuit output voltage. The specific feature extraction method is introduced. Improved QPSO algorithm was proposed to improve the training speed and class precision of SVM. At last the method mentioned above was applied to a circuit. The result showed that this method was very good.

Abstract: The altimeter is a very important measuring-height equipment, so the test of the altimeter is the important content to function measurement of the plane navigation system, synthetically altimeter detector can make some type altimeter test standardized, this paper introduces the overall design and system composition of the altimeter detector, it is focused on emphatically the hardware design procedure of the synthetical altimeter detector, this instrument can reduce about 30% work load of attendants, in the actual application the altimeter detector has advantages, such as good military and economic benefits.

Abstract: Strain sensing is widely used in safety monitoring of high temperature pressure pipes in oil companies and power plants. A novel high-temperature strain sensor was researched based on FBG(Fiber Bragg Grating) and the elastic high-temperature alloy in this paper. First, high-temperature Polyimide fiber FBG was prepared and tested in high temperature chamber. Second, a novel T strain gauge structure of three FBG was designed and fabricated on the elastic high-temperature alloy. This strain gauge could be applied in measurement of two-dimensional high-temperature strain sensing. In the end, a equi-intensity cantilever was adopted to test the high-temperature FBG strain sensor and testing results verified that the T type FBG strain sensor was suitable for high-temperature strain sensing with reliable performance in 300°C environment.

Abstract: Experiment control platform for the neural network decoupling control is constructed for the glass furnace taking heavy oil as fuel. By dual control, the improving Levenberg-Marquardt learning algorithm is discussed in order to improve the learning speed and to satisfy the real control. The neural network decoupling real control based on C-Script language and PLC S7-400 hard system under WINCC is realized with satisfying control results.

Abstract: The intelligent LED daylight lamp lighting control system is designed. According to the external light intensity, the control system which uses the PWM light modulation technology, ST89C52 Single Chip Microcontroller as the control system core, can adjust brightness of the LED daylight lamp automatically and accurately, and can also manually adjust the brightness. A comfortable lighting environment can created through the system for controlling the illumination source, the purpose of energy saving can be achieved. The control system which can be used for a variety of lighting situations has strong application value.