Advanced Materials Research Vols. 846-847

Abstract: In order to in-depth study the magnetic suspension molecular pump technology, a 4kW high speed magnetic motor was firstly developed. The magnetic motor includes 2 radial magnetic bearings, 2 axial magnetic bearing with five degrees of freedom. The wind abrasion and magnetic flux distribution in stators and the gap between the stator and the rotor were analyzed. Then the high speed magnetic motor prototype was introduced in detail. At last, the basic experiment result was present and the conclusions were given.

Abstract: This paper designs a set of jacquard and dobby shedding device, it specially suitable for 30 layers carbon fiber weaving equipment, which meet the requirement of the special shed. Through to the main drive system design of the jacquard, the structural design and the kinematics analysis of tandem cylinder dobby shedding mechanism, so that the design reasonable. The experiments show that the opening device can well ensure the shedding action orderly, continuously and the shed clear, it can meet the requirements.

Abstract: This article designs a new set of beating-up mechanism for the multilayer angle interlocking construction loom based on the requirements of special material of carbon fiber and weaving technology,and it can battening 30 layers carbon fiber at a beating-up.Through building the 3D solid models for linkage mechanism in SolidWorks, it show that the beating-up mechanism Run smoothly by the kinematics and dynamics analysis of different beating-up rule in ADAMS.

Abstract: How to solve disease-diagnosing problem effectively by the aid of Artificial Intelligence Computer has been being a mainstream of Intelligent System researching and development. Heretofore, performance of the well-known native Uncertainty Reason Resolution method still is unsatisfactory to professionals. This paper pioneers the concept of Associative-Pivot Factor and its Certainty Index Speculation algorithm, and on this base designs A novelty Machine Diagnosing Algorithm based on the Certainty Reason of Associative-Pivot Factor. Results and analysis demonstrate that the method exhibit a better efficiency than man-expert individual and the native CF Method. Generally speaking, it manifests an accurate rate of diagnosis over 82% and possesses the capacity to expand diagnosing capability of man-expert.

Abstract: This paper presents a set of the let-off mechanism of carbon fiber multilayer diagonal loom, which can accomplish thirty layer fabric weaving. This mechanism can realize multi-layer positive warp let-off and negative warp tension control and can meet different fabric structure and different types of warp weaving requirements. According to the requirement of the multi-layer weaving and the characteristics of carbon fiber, 3 d virtual prototype model of carbon fiber multilayer diagonal loom is established by applying the 3 d design software Solidworks and using the mechanical analysis software ANSYS analyses the mechanical properties of the key parts in different working conditions. Virtual prototype design ensures the rationality and reliability of the design of the whole machine.

Abstract: The article mainly introduces the design and application of a small power brushless DC motor drive control system circuit, describes the special control function of the gate circuit chip, gives a typical application circuit, and explains.

Abstract: This paper is concerns with the study of modeling and control of sludge pyrolysis in a fluidized bed reactor. Firstly, a mathematical model is established for sludge pyrolysis in a fluidized bed furnace, mass balance and energy equations are established. Then, the model is linearized at the steady-state point, two linear models are derived: state space model and transfer function model. The transfer function model is used in internal model control (IMC), where the filter parameter is selected and discussed. The state space model is applied in model predictive control (MPC), where controller parameters of prediction horizon length and control horizon length are discussed.

Abstract: This paper is concerns with the study of model predictive control of a circulating fluidized bed coal combustor. A nonlinear mechanical model is proposed based on a pilot plant and representative of the main combustion phenomena. The nonlinear model is linearized at the steady-state point, linear state-space model is obtained. Model predictive control (MPC) strategy is applied using linear model. Simulation results are presented and discussed.

Abstract: A control framework to limit aircraft Euler angles (pitch/rolling) under adverse side stick command adding is introduced. Attitude envelope of the aircraft pitch/rolling angle is discussed based on geometrical position of the aircraft relative to the ground. Control law of is established by using linearized predictive control strategy. The simulation test presents the performance of attitude protection restricting the Euler angles within the required envelop at 1,000m. Based on the test work discussed herein, the control work proposed in this paper is believed to be applicable.

Abstract: Distribution automation, since the last century 90's in China, has accumulated a lot of technology and management experience. At present, distribution automation has been to the large-scale application stage. In order to ensure distribution automation economic and practical, this paper proposes distribution automation technical development route based on the analysis of several typical technologies, and supplies the specific technical principles. At the same time, this paper also points out the difficulties of distribution automation development, and puts forward some corresponding technical measures should be taken. This paper proposes the technology roadmap which has been taken by State Grid Corporation of China (SGCC), and has been used into the technology standard of SGCC.