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Hardware-in-the-loop (HIL) and fault injection testing are widely used in automotive industry to validate hardware and software architectures as best practice and in fulfillment with international functional safety standards. Time and economical investments can constitute an obstacle to the development of effective testing systems, especially for small and medium automotive industries. This paper...
This paper presents a software platform for monitoring vehicles' CO2 emission in real time. By this platform, drivers can find the relationships between the vehicle CO2 emission amounts and their personal driving habits. Therefore, drivers can adjust their driving habits in real-time when viewing the real-time CO2 emission during the driving process. Besides, the drivers can check their speeds traces...
The Slocum glider has new developments in vehicle software and hardware that allow increased mission capabilities and endurance. A propeller-based propulsion system provides additional thrust in addition to the standard buoyancy engine. A larger displacement buoyancy engine and on-board software routines create operational flexibility. Low power modes extend vehicle endurance. New mission abort handling...
Over the past decade, the complexity of electronic devices in the automotive systems increased significantly. The modern high level vehicles include more than 70 Electronic Control Units (ECUs) aimed at managing the powertrain of the vehicle, and improving passengers' comfort and safety. ECU microcontrollers aimed at the control of the fuel injection system have a key role. In this paper we present...
Creating autonomy for maritime vehicles that allows multiple developers and users to quickly integrate and develop capabilities is a difficult process. Multiple examples of autonomy exist; however, creating an environment that is modular and expandable is not often a goal of many autonomous systems. This work presents an advanced Autonomous Vehicle Architecture (AVA) for maritime systems that was...
This paper presents an Adaptive Nonlinear Model Predictive Controller for longitudinal motion of automated vehicles which incorporates advance information on future speed demand values, as well as on road grade changes. It is used in combination with a state and parameter estimator to adapt to a changing vehicle mass. This allows improved speed tracking capability for horizontal driving and steep...
Buses and other vehicles with regular routes and stop patterns are an important application field for hybrid electric drives. Given initial and final desired state of charge (SOC) of the battery, the optimal distribution of power between both sources, battery and engine, can be computed off-line for a known driving cycle. In the case of a range extender (REX) with an engine switched between two operating...
In this paper, two simplified methods based on Dynamic Programming (DP) to solve an Eco-driving problem for a conventional vehicle equipped with an internal combustion engine are studied. The first method is based on the transformation of a time-based Optimal Control Problem (OCP) into a distance-based OCP while the second is based on solving the time-based OCP directly. The Pontryagin Minimum Principle...
During drive off maneuvers from stand still with high torque unpleasant longitudinal oscillations of the vehicle occur, commonly referred to as the power hop phenomenon. This effect especially arises in vehicles with manual transmission in a maneuver with abrupt release of the clutch, also known as snap start. Traction control on the engine control unit provides a cheap and easy way to reduce power...
Currently all countries are facing a common problem of fossil fuel shortages and many researchers are finding various solution to provide green energy. A large part of energy demand is increasing in transportation sector, which includes cars, bike, buses, trucks, auto-rickshaws and many more. Currently, these vehicles run on gasoline (petrol) or diesel, and in most of vehicles, fuel is not combusted...
This paper proposes a discrete event model for controlling railway traffic in order to minimize transport time and, implicitly for optimizing fuel/energy consumption. We built a modular approach for solving the traffic coordination issue, respectively we built three Petri net models for modeling and simulating, respectively the transport planning process; the control of transport itinerary; and the...
Crawling conditions control for an Automatic Mechanical Transmissions (AMT) Vehicle is described in this paper, an AMT vehicle dynamic model and related control system simulation model based on Matlab / Simulink is built and the fuzzy controller is designed to realize the vehicle crawling control. The vehicle crawling speed can adapt to the driver's driving intent as well as the load changes. The...
× Nowadays, the dual clutch transmission is tending to be generalized because of the high yield of this kind of gearbox with sprockets. The dual clutch transmission also allows gear shifting without torque breaking. These kinds of transmissions are usually controlled in torque. To exploit all of the capacities of this technology in term of comfort and driving pleasure, accurate information of both...
As government regulations force stringent automobile emission standards with graceful degradation under various hardware faults and operating environments, accurate feedback control of the engine air-to-fuel ratio has become a key enabler. We present an overview of the automotive three-way catalyst (TWC) control system and discuss challenges associated with development and implementation of a successful...
To develop a control strategy for a vehicle, the most important factors are to minimize the cost in terms of time and resources, and availability of a risk-free test environment to test new strategies. This paper presents the strategy for developing control-based models for a plug-in hybrid vehicle. The resulting vehicle model will allow development of advanced supervisory control strategies for the...
Hybrid electrical vehicles (HEVs) are able to improve the fuel economy with reduced emissions due to their effective power management and regenerative power utilization. However, developing an optimal supervisory control strategy to distribute power is quite challenging due to the high degrees of freedom introduced by the multiple power sources in HEVs. Conventional approach uses so-called power follower...
A robust controller for engine speed regulation of automated manual transmission(AMT) hybrid vehicle is introduced in this paper. Based on the shift control strategy of no clutch motion and power compensated by motor, the engine speed needs to be precisely controlled. A high realistic plant model is established and verified in AMESim environment. Then the plant parameters are identified in stepwise...
The variable-geometry scramjet inlet can improve the aerodynamic performance of hypersonic vehicle by moving the movable lip to capture more airflow, which causes the uncertainties of model structures and parameters in the meanwhile. This paper presents a multi-model switching control system to tackle the strong nonlinearity and interaction characteristics. According to the working conditions, we...
The fear of climate change encourages countries to work internationally on common plans to try stop the world wide temperature rise, as was seen in 2015 on the “United Nations Framework Convention on Climate Change, 21st Conference of the Parties”. The main objective is to avoid emission of greenhouse gases. Traffic is one major source of greenhouse gas emissions, however this sector offers deployment...
Real-time and automatic tracking emissions of vessels can help the maritime traffic department and environmental monitoring department to study quantitatively and provide foundation for setting pollution reduction measures, and defining policies for management departments. Traditionaly method is based on fuel consumptions of vessels which need the cooperation of vessel operators; it is hard to realised...
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