A new composite ABS control method for EV with four independently-driving wheels is presented. Combinating the best braking energy recovery strategy and the ideal braking force distribution control strategy, we design...
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Aiming at analyzing influence of chassis torsional stiffness on handling performance, we build a four degrees of freedom vehicle model that includes chassis torsional DOF to study chassis roll distortion. Influence of...
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The characteristics of fuel distribution were further researched during the practice working process of YD4A75-C3 electronic-controlled common rail diesel engine by using commercial CFD software FIRE. The research res...
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The characteristics of fuel distribution were further researched during the practice working process of YD4A75-C3 electronic-controlled common rail diesel engine by using commercial CFD software FIRE. The research results showed that fuel atomizes rapidly and forms mixture after injected into the cylinder, then the mixture is diffused to the combustion chamber wall, concave and clearance by jet kinetic energy. The fuel distribution is relatively concentrated, and the spatial distribution volume is relatively small, so the fuel concentration is very unevenly distributed and basically exists in the form of high concentration. Meanwhile, unburned fuel absorbs quantity of heat released by the combustion process so the ambient temperature is much higher before combustion, which further promotes the producing of high temperature zones and emissions.
In this paper, the engine optimal matching is done to improve the efficiency of a turbocharged lean-burn LPG engine by optimizing the compression ratio and the distribution phase of camshaft. In this way, the gas cons...
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Empirical tire models provide a reasonably good representation of experimental data for tire lateral force and aligning moment properties. However, empirical models would become quite complicated while increasing inpu...
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The heterogeneous reaction of SO2 on TiO2 particles was studied using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS).The influences of the oxygen concentration,relative humidity (RH),and ...
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The heterogeneous reaction of SO2 on TiO2 particles was studied using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS).The influences of the oxygen concentration,relative humidity (RH),and ultraviolet (UV) light illumination (λ=365 nm) intensity on the reaction were *** main product of the heterogeneous reaction of SO2 on TiO2 particles was sulfate with UV illumination and sulfite without *** production of sulfate was promoted significantly with UV illumination or water,and there was a synergistic effect when both were *** the dry system without UV,the heterogeneous reaction of SO2 on TiO2 particles was found to be second-order for SO2 and the initial uptake coefficient,BET,was determined to be 1.94 × *** UV and RH=40%,the reaction order was first-order and the initial uptake coefficient was 1.35 × 10-5.
Intelligent airbag system can control its deploy time and force according to different types of occupant in different sitting position. The accurate detection of vehicle occupant is the precondition and plays an impor...
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Heterogeneous reactions of gaseous methanesulfonic acid (MSA) with calcium carbonate (CaCO3) and kaolinite particles at room temperature were investigated using diffuse reflectance infrared Fourier transform spectrosc...
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Heterogeneous reactions of gaseous methanesulfonic acid (MSA) with calcium carbonate (CaCO3) and kaolinite particles at room temperature were investigated using diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and ion chromatography (IC).Methanesulfonate (MS-) was identified as the product in the condensed phase,in accordance with the product of the reaction of gaseous MSA with NaCl and sea salt *** the concentration of gaseous MSA was 1.34 × 10-13 molecules cm-3,the uptake coefficient was (1.21 ± 0.06) × 10-8 (1) for the reaction of gaseous MSA with CaCO3 and (4.10 ± 0.65) × 10 10 (1) for the reaction with *** uptake coefficients were significantly smaller than those of the reactions of gaseous MSA with NaCl and sea salt particles.
A novel scheme to improve the dynamic characteristics of ship motion control system is proposed after investigating several advanced control algorithms. Problem of selecting the corrector loop in multi-object structur...
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ISBN:
(纸本)9781424480364
A novel scheme to improve the dynamic characteristics of ship motion control system is proposed after investigating several advanced control algorithms. Problem of selecting the corrector loop in multi-object structure is studied, which achieved the accuracy requirements of vessel course control on disturbed sea. An integrated control law with a synthesized structure Asymptotic Observer + Corrector + Speed control law(ACSC) is deduced. Basic characteristics of ACSC law are described, then the way to obtain the transmission matrix F(s) of dynamic corrector is presented. controller's transmission function WO(p), insuring stability of closed loop system, is found as a solution of mean square norm optimization problem. Finally, the performance of control system is studied, especially the course accuracy and amplitude-frequency characteristics with/without control are compared for disturbed sea conditions.
Four-wheel automobile co-simulation model with AMESim and Simulink/stateflow was established. Vehicle model was established with AMESim. Also, using AMESim we established a four-channel hydraulic system including ABS ...
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