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This paper focuses on quickly identifying the unknown or time-varying random latency probability (RLP) of the measurements in the nonlinear networked multi-sensor system by resorting to the efficient implementation of maximization likelihood (ML) estimation. Firstly, the full-probability likelihood computation is equivalently transformed into a log-likelihood function summation form parameterized...
A non-linear model is set up for engine transient operating condications. Both sliding model control-ler and PID control-ler are desined to realize adaptive regulation of throttle opening and ignition timing respectively. The results of simulation on engine idling show that the amplitude of engine speed fluctucation is less than 6 r/min, indicating that the non-linear model built is appropriate for...
In this paper, a quasi-dimensional turbulent combustion model for SI engines was thoroughly studied. The fractal expression of the turbulent flame speed was incorporated into the combustion model. The research reveals that the Gibson scale is more applicable than the Kolmogorov scale. As a phenomenal description of combustion process, the fractal is also an effective tool.
Gasoline engine transient conditions oil film dynamic would effect on air fuel ratio. The Elman neural network was used to identify the parameters of oil film, and the gasoline engine oil film transient compensator model was established by Simulink. Based on MotoTron rapid prototyping Development Platform, oil film compensator model strategy transplantation, download and calibration test that were...
The rapid prototyping development technology for the transient throttle controller based on the Motohawk development platform was introduced. The mathematical model was set up for the transient throttle controller. Based on it, a PID control algorithm was proposed and verified in MATLAB/SIMULINK. A rapid prototyping development platform was built up using MotoTron technology. The precise control was...
Testing on the the AJR-type gasoline Santana 2000 sedan, processed and analyzed experimental data obtained from two acceleration transient operating conditions that one is increasing speed and constant torque, another is constant speed and increase the torque. Compared with the corresponding steady-state conditions, summed up the burning regulation of the gasoline engine at the transient operating...
Fault isolation and reconfiguration are very important aspects of distribution network automation. When there is a fault in the distribution system, the loads connected with the fault zone should be separated and the operation pattern can be found by changing the status of the section switches or contact switches. A method of using different fault isolation and reconfiguration measures to deal with...
This paper presents an automatic welding machine used for the carbon dioxide gas welding, with the mechanical structure designed, and the working process of the automatic welding machine analyzed. With PLC control system design method, we gave the system's control circuit principle diagram and I/O address assignment table, and carried out the design of hardware and software, drew the system's flow...
This paper presents a profile design method for a new cam mechanism called breadth cam. A breadth cam gets its name because the centers of the rollers are a constant distance apart. And by the motion of follower, a breadth cam mechanism can be classified as two types: one with a pair of translating followers, the other with a pair of oscillating followers. This paper presents design solutions for...
This paper describes a design of a multi-channel telemetry unit for monitoring distribution switching station based on TMS320F28016 DSP. It details the composition of the hardware block diagram and the design of software. It is capable of measuring multi-channel three-phase voltage and current. In the software, it adopts Fast Fourier Transform to compute multi-channel three-phase voltage, current,...
This paper presents a design of power distribution automation terminal based on TMS320F2812 DSP, describes the distribution automation terminal hardware and software design, and studies to improve the system reliability and accuracy of measurement and calculation, especially the accuracy of zero-sequence current. It describes the design methods of Ethernet communication and implements the protocol...
In order to improve the denoising accuracy of X radial diffraction signal, based on the introduction of stationary wavelet theory and analysis of existing problems of traditional threshold functions, a novel wavelet threshold denoising method is proposed. In the Matlab experimental platform we prove that this new threshold method can compensate for the deficiency the traditional soft/hard threshold...
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