The power performance and fuel economy are simulated under the model of THsS II based on ADVISOR software. Compared with the simulation results of Prius, the distinct advantage of THS II belonging to the double planet...
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The Toyota Prius is the bestselling hybrid vehicle on current market. The power split device (PSD) in the Toyota Hybrid System (THS) is the key component in Prius. And the differential is the essential component in au...
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Aiming to vehicle steering maneuver, linear quadratic gauss control method of ride and roll attitude via active suspension is designed at first. Then an integrated control strategy which combines linear quadratic opti...
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Aiming to vehicle steering maneuver, linear quadratic gauss control method of ride and roll attitude via active suspension is designed at first. Then an integrated control strategy which combines linear quadratic optimum control law with fuzzy control algorithm is put up. The reference model which is able to represent both ride and handling performance and have nine degrees of freedom is built up. By matlab/simulink simulation, integrated control strategy is assessed in an open-loop J-turn and Sine-steer driving scenario on a random-rough road. The performances of active suspension with integrated control are compared with the one of active suspension with linear quadratic gauss control and passive suspension. The results indicate that integrated control strategy combining linear quadratic gauss control and fuzzy control can decrease body roll angle more adequately and optimize body attitude on the basis of linear quadratic gauss control effect, which improve ride comfort and handling quality simultaneously.
Based on the methods of CAE, bench testing and vehicle torsion test, the torsional mechanism of vehicle was revealed through using the normal condition. The research promotes the precision of the simulation value of t...
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Based on the methods of CAE, bench testing and vehicle torsion test, the torsional mechanism of vehicle was revealed through using the normal condition. The research promotes the precision of the simulation value of the body torsional rigidity and the testing value by using the theory of non-linear interpolating, and the torsional stiffness of body and the torsional stiffness of suspension were systematically analyzed, and the theoretical basis and test methods for the static torsional stiffness of whole vehicle were provided, namely, the torsional stiffness of the equipped state body is 1.72 times than BIW, the proportion of the front suspension torsional stiffness and rear suspension is 1.44, the torsional stiffness of BIW is 5.8 times than suspension, the torsional stiffness of the equipped state body is 11 times than the suspension, ande the torsional stiffness of the equipped state body is 1.89 times than BIW. On the basis of the theory study, three matching principles are explored. It provides theoretical basis and design methods for the passenger car. The research results have the promotional value of practicability and a wide range of engineering application.
Taking 32 interior noise samples acquired from 8 types of car under different conditions as evaluation objects, loudness, sharpness, roughness and fluctuation strength, these sound metrics in psychoacoustics, were use...
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Taking 32 interior noise samples acquired from 8 types of car under different conditions as evaluation objects, loudness, sharpness, roughness and fluctuation strength, these sound metrics in psychoacoustics, were used as the input, and sensory comfortable evaluation obtained by 7 points of category scaling method as the output. The sound quality prediction model of vehicle interior noise was established based on generalized regression neutral network. Sensory comfortable of interior noise samples were obtained through the prediction model and the results were compared with obtained through back-propagation neural network and multiple linear regression prediction model. The results showed the generalized regression neutral network was more effective than back-propagation neural network and multiple linear regression prediction model, the range of relative prediction error is -7%~7%. The generalized regression neural network prediction model represented better performance on nonlinear relation between sensory comfortable and objective parameters exactly than multiple linear regression prediction model, and higher precise and stability than back-propagation neural network.
This paper presents the parameter identification technology of heavy commercial vehicle rollover prediction. In this study, a nonlinear truck model has been established for the rollover threat prediction. In order to ...
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ISBN:
(纸本)0878492712
This paper presents the parameter identification technology of heavy commercial vehicle rollover prediction. In this study, a nonlinear truck model has been established for the rollover threat prediction. In order to achieve valid and representative truck model as close to the target real truck as possible, a set of key parameters are identified from experiment data collected from real truck ground test. At the last, the vehicle prediction model simulation results compared with the experimental results, it is shown that the prediction model can be accurately predicted the rollover dangerous state.
Since the introduction of the membrane bioreactor(MBR)in China in the early 1990s,remarkable progress has been achieved on the research and application of this *** has now become one of the most active fields in the w...
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Since the introduction of the membrane bioreactor(MBR)in China in the early 1990s,remarkable progress has been achieved on the research and application of this *** has now become one of the most active fields in the world in this *** review outlines the development of MBR-based processes in China and their performance of treating municipal and industrial *** membrane fouling is a critical operational problem with MBR processes,this paper also proposes updated understanding of fouling mechanisms and strategies of fouling control,which are mainly compiled from publications of Chinese *** for the commercial application of MBR in the country,the latest statistics of large-scale MBR plants(>10000 m^(3)·d^(–1))are provided,and the growth trend of total treatment capacity as well as its driving force is analyzed.
Perfluorinated compounds(PFCs)are ubiquitously distributed in the environment mainly as perfluorocarboxylic acids(PFCAs)and perfluoroalkyl sulfonates(PFASs).In this paper,six PFCAs and two PFASs were quantified in sur...
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Perfluorinated compounds(PFCs)are ubiquitously distributed in the environment mainly as perfluorocarboxylic acids(PFCAs)and perfluoroalkyl sulfonates(PFASs).In this paper,six PFCAs and two PFASs were quantified in surface and tap water samples from 12 sites around Lake Taihu near Shanghai City in East *** PFCs were perfluorooctanoic acid(PFOA)and perfluorooctane sulfonate(PFOS),of which the concentration ranges were 6.8–206 and 1.2–45 ng·L^(–1),the geometric means were 35.3 and 9.4 ng·L^(–1),and the median(quartile range)values were 31.4(34.4)and 10.4(10.7)ng·L^(–1),*** PFCs were also detected but in much lower concentrations than *** sources of the PFCs were expected to be direct industrial discharges in the Lake Taihu area,and this area was also a possible source of PFCs contaminations in Shanghai district in the *** distributions were found different in the upstream,downstream and north part of Lake *** of PFCs in the tap water in Lake Taihu area indicated their exposure to the local people.A brief estimation of the environmental risks by PFCs implied no acute or immediate risks from PFCs to local human health,but chronic risks from PFOA in the tap water should be considered in the downstream regions.
A new wheel model was established to simulate stand-still and starting condition which can't be accurately described by previous tire model. In this new model, the wheel is simplified into two parts: wheel-rim and...
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A fast DC-link voltage controller is desirable to reduce the DC-link capacitor for PV inverters. This paper proposes a method for single-phase grid-connected PV inverters to remove the ripple component from the DC-lin...
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ISBN:
(纸本)9781457705427;9781457705410
A fast DC-link voltage controller is desirable to reduce the DC-link capacitor for PV inverters. This paper proposes a method for single-phase grid-connected PV inverters to remove the ripple component from the DC-link voltage signal and a scheme to regulate the DC-link voltage based on energy-balance analysis. The proposed scheme provides excellent dynamic performance as well as a function to prevent DC-link overvoltage by limiting the input power, which is verified by both simulation and experiments.
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