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Wang Lei - IEEE Xplore Author Profile

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Many of the existing intelligent algorithms are designed for specific problems and some theoretical analysis does not unify under a common framework. Although it's impossible to design a unified model to solve all the optimization problems, it's possible for us to design a universal model to analyze the algorithms' mechanism. Based on the development of cultural studies in recent years, this paper...Show More
When a high precision LOS stabilized platform runs in a low speed, the precision and performance are always affected by slip-stick. Its reason is the non-linear friction. For dealing with the problem, the paper proposes an new integral sliding mode variable structure controller approach, and designs a novel reaching rule. Actual test results of the system show that the presented controller can sol...Show More
According to the principles of the line of sight (LOS) stabilization and tracking the maneuvering target, the control and test facilities of the gyro stabilized and opto-electronic tracking platform were designed in the paper. The testing key techniques of them were discussed. An industrial computer was the control kernel of the testing system. A Peripheral Component Interconnection (PCI) bus inte...Show More
Friction exists in all motions, and friction is the key factor that influences the low velocity performance of servo systems. It usually caused the steady-state error of servo systems and resulted in the creeping phenomenon in low velocity motions. Friction is complicated nonlinear process with time-varying uncertainties. The traditional PID controller of servo systems with fricition was not satis...Show More
The three gas sensors array was developed in this paper, and it was encapsulated through the Micro-Electro-Mechanical Systems (MEMS) technique. The gas sensors applied the heating unit to improve the sensitivity. The gas sensor which was sensitive to the special gas could be selected in the different application fields. The sampling experiments showed that the gas sensors have the higher sensitivi...Show More
In order to develop the low cost and high precision navigation system of a small unmanned aerial vehicle (UAV), a data fusion method based on the strap-down inertial navigation system (SINS) and the Global Positioning System (GPS), and the algorithms simplified of the Kalman filtering were discussed deeply in the paper. A SINS which adopted an improved attitude-updating algorithm was proposed usin...Show More
An electronic nose is the intelligent instrument that identifies the chemical odors mimicking a human. Now the majority of electronic noses could only identify the specific species, however the human olfactory system is able to characterize and classify many different odors. The problem has prevented their use in wider commercial applications. The pattern recognition methods based on the probabili...Show More
This paper presents a novel modified algorithm for particle swarm optimization (PSO). Initially, based on the inspiration of "universal gravitation" in nature, a kind of gravitation field model (GFM) applied to swarm intelligent optimization is designed. From the basis of GFM, a novel gravitational particle swarm optimization (GPSO) method is proposed, in which, a self-organizing field structure a...Show More
This paper presents a series of evaluation indexes for intelligent particle swarm optimization based on the basal evaluation index system in the field of intelligent optimization. A kind of evaluation model used to evaluate synthetically the general optimization performance and population dynamics of particle swarm optimization is proposed. This evaluation model is simulated and validated by funct...Show More
An intelligent visiting-route optimization strategy inside Shanghai EXPO Exhibition Auditoriums is discussed in this paper based on the general planning blue-print of 2010 Shanghai EXPO. Basic design model for visiting route optimization inside Shanghai-EXPO-Area is derived, based on which the optimal induction scheme of the visiting route can be solved using particle swarm optimization. In additi...Show More