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Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
In order to solve the problem of ineffective cooperation across multiple departments and application systems in the spacecraft assembly business, the paper analyzed the transmission demand for design data and process data, proposed an integration framework of spacecraft assembly business system, and solved key issues in the integration process such as data transmission and technical state synchronization...
This paper proposes an adaptive radial basis function (RBF) neural network (NN) fuzzy control scheme to enhance performance of shunt active power filter (APF). The RBF NN is utilized on the approximation of nonlinear function in APF dynamic model, the weights of the RBF NN are adjusted online according to adaptive law from the Lyapunov stability analysis, to ensure the state hitting the sliding surface...
To deal with the problems in one-time shipbuilding spatial scheduling with irregular workplace and rectangular blocks, a mathematical model with the objective of higher efficiency was established which is bound by the relationship between the blocks and blocks, the blocks and the workplace. And then a scheduling algorithm based on heuristic rules and genetic algorithm was put forward. The algorithm...
In this paper, fuzzy control is introduced to reduce the big flux linkage and torque ripple of traditional PMSM DTC system. Simultaneously, using SVPWM to modulating voltages, using the full-order state observer to replace the integral part of the stator flux linkage observer, those method effectively reduce the dc drift, the integral error accumulation, other shortcomings and modulation precision...
This article is based on the principle of the voltage space vector pulse width modulation (SVPWM), and using the DSP Builder to build the SVPWM model. The simulation with MATLAB/SIMULINK software verifies the implementation of the correctness of the algorithm and the simulation results. Finally, the space vector PWM generator which based on FPGA could be designed. The results showed that: The simulation...
In this paper, a high-speed permanent magnet motor with 10kw and 100krm which used in an air compressor was designed at first, then, the loss as one of the key researches of high speed permanent magnet motor was analyzed from the angle of the magnetic field: the stator core loss was analyzed under rotor magnetic field and armature current magnetic field, meanwhile, the stator losses of different materials...
During the coal cutting process in mines, the drill stem is easy to be deflected in virtue of the complicated geological conditions. The deviation control of drill stems is of great significance for the production efficiency and service life of drill stems. Based on analyzing influence factors of the deflection of drills, this paper builds up a model to describe deflecting forces of the coal seam...
An algorithm for a n-link manipulator movement amidst arbitrary unknown static obstacles is presented. Given a theorem stating that if the manipulator moves according to the algorithm it will discover in a finite number of steps whether a given target configuration is reachable or not. The number, shapes and dispositions of obstacles may be arbitrary.
The interventional therapy is a kind of minimally invasive treatment. Under the guidance of medical imaging equipment, surgeons take the special catheter, guide wire and other precision instruments import in the body to do the pathological diagnosis and local treatment. The characters of interventional therapy are no operation, small trauma, rapid recovery, etc. However, the interventional treatment...
In order to avoid unnecessary costs of the design process, we need to design a leg and debug it in advance. It always allows us to determine that whether the design is reasonable. In this dissertation, aiming at the single leg supporting problem of hydraulic quadruped robot in the process of debugging, we design a robot bound planes with guide rails. The robot bound plane is designed by 3D drawing...
In recent years, wheeled robots have get widely used and developed because of its advantages. But they also have some disadvantages, for example, they obviously can't be compared with the spherical amphibious robots on rough ground. The four-legged spherical amphibious robots can move quickly and smoothly on rough ground and have superior carrying capacity. This paper deeply analyzed the movement...
The wave journal bearing was first reported by Dimofte In the early 1990's. The static behavior of a hydrodynamic wave journal bearing is present in this paper. It is found that the static performance is related to the design parameters including eccentricity ratio, wave number, wave amplitude ratio and wave position angle. It is shown by the numerical results that the influence of the wave number...
In the paper, it is proposed that multi-spectral image pure pixel is utilized for completing SAM classification. The classified samples are utilized for electively constructing sparse dictionary, thereby improving the representativeness of the dictionary. Eight surface feature types are set in Landsat8 image. PPI index is used for calculating pure pixel index of each pixel. Pure pixel of each surface...
Corrosion and scaling is a frequent phenomenon in the operation of industrial circulating cooling water system, they have great influence on pipeline equipment, which will cause serious economic losses and waste of water resources, so the treatment of corrosion and scaling of industrial circulating cooling water is particularly important. In this paper, the relevant water quality and process data...
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