Optimum designs by simulation and their model distributions can activate and improve production and development processes of automotive industries by cooperative development among different organizations. Simulation m...
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ISBN:
(纸本)9783902823434
Optimum designs by simulation and their model distributions can activate and improve production and development processes of automotive industries by cooperative development among different organizations. Simulation models are investigated for standardizations and distributions in a working group named investigating committee on model development and distribution by international standard description in JSAE. Present subjects and future requirements to models of automotive simulation for model-based design (MBD) are discussed.
By VHDL-AMS (IEC61691-6, IEEE1076.1) Full vehicle simulation, the fuel economy, the effect of heat energy recovery from the exhaust gas, and the power performance were discussed. The basic model performance was valida...
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By VHDL-AMS (IEC61691-6, IEEE1076.1) Full vehicle simulation, the fuel economy, the effect of heat energy recovery from the exhaust gas, and the power performance were discussed. The basic model performance was validated by PRIUS. The fuel economy for the LA#4 driving pattern was 22.0km/L by the simulation and on other hand measurement was 21.7km/L (error 1.4%). The energy management using an exhaust gas heat exchange system realized 10.3% fuel consumption improvement during warming up. As for the power performance, the simulated acceleration time of 0-100km/h was 11.12sec and the measured vehicle time was 11.27sec. The error between simulation and actual measurement result was 1.4%. We showed that the multi-domain full vehicle simulation is effective for the vehicle concept planning. Since the HV model uses embedded real control software, the VHDL-AMS modeling can be used as SIL at systemcontrol development stage.
This paper compares 3 ASR 1 control laws, a PI controller, a linearizing feedback and a flatness based control. First, the controllers are designed based on a two state equations vehicle model. Then, the controllers ...
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This paper compares 3 ASR 1 control laws, a PI controller, a linearizing feedback and a flatness based control. First, the controllers are designed based on a two state equations vehicle model. Then, the controllers are experimentally validated on an hybrid vehicle (VELROUE) with rear electric wheels and front axle ICE 2 traction. Finally, the nonlinear control laws are compared to the PI controller that is classically used in the automotive industry.
In this paper,a new method is proposed for the design of control laws for hypersonic vehicle flying at the beginning part of the reentry phase with reaction jets,where magnitude of control input is fixed but pulse wid...
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ISBN:
(纸本)9781479900305
In this paper,a new method is proposed for the design of control laws for hypersonic vehicle flying at the beginning part of the reentry phase with reaction jets,where magnitude of control input is fixed but pulse width is adjustable.A robust anti-saturation control law for continuous-time system is designed to resist model uncertainty and avoid saturation in pulsewidth modulation(PWM) control *** continuous-time control law guarantees Hperformance indexes constraint and quadratic performance indexes constraint at the same ***-time state feedback control gains are obtained from the digital redesign of continuous-time feedback gains,and a PWM controller is developed based on the equivalence of PWM controlsystems and discrete-thole control *** effectiveness of the method is illustrated through numerical simulations.
It is required to characterize the materials according to the regulation in order to manufacture and fabricate components to be used for aircraft. The main purpose of this requirement is to determine the suitability o...
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Blow forming technology has been used to produce glass and plastic components with easy and simple process. In order to apply this technology to metallic system, relatively high formability of material and elevated te...
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In the solid state bonding, joint are made by pressing surfaces together at high temperature so that a bond grows across the interface by atomic diffusionIn order to satisfy both requirements of thermal and mechanical...
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In the solid state bonding, joint are made by pressing surfaces together at high temperature so that a bond grows across the interface by atomic diffusionIn order to satisfy both requirements of thermal and mechanical properties of aerospace vehicle, conductive Cu Cr Zr alloy was bonded to duplex steel with high strengthSolid state bonding was performed at 3 different pressure conditions and at temperatures of 850℃ and 950℃Microstructural and mechanical evaluation was performed to obtain the optimum joining condition.
The Fault Detection and Isolation (FDI) of a quadrotor vehicle, which is described by a nonlinear model, are tackled in this paper. The nonlinear identity observer is utilized to detect the various types of sensors fa...
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ISBN:
(纸本)9781479928569
The Fault Detection and Isolation (FDI) of a quadrotor vehicle, which is described by a nonlinear model, are tackled in this paper. The nonlinear identity observer is utilized to detect the various types of sensors faults, and the Generalized Observer Scheme (GOS) is used to isolate the faulty sensor. The robustness of the observer and its scheme is investigated through several simulation results to build the Decision- Making Unit (DMU) for the residuals. Various simulation results have validated the FDI method and shown the system performance towards different fault scenarios.
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