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Based on the analysis of the bus system dynamics, the five degrees of freedom bus system dynamics equation has been established, using vehicle speed and front wheel angle as input, and sideslip angle, yaw rate, the sprung mass roll angle, the sprung mass roll angular speed, lateral load transfer capacity front axle and rear lateral load transfer capacity as output. According to the linear control...
Vehicle stability control system has evolved significantly over the past three decades. Several control strategies have been implemented to enhance the vehicle stability control performance. However, most of these control strategies have not been focused on improving the transient response for vehicle yaw rate and sideslip angle tracking controller in the presence of uncertainties and disturbance...
Underwater Gliders (UGs) are a type of Autonomous Underwater Vehicle (AUV) that uses buoyancy engines, an energy efficient locomotion, primarily for oceanography. In this paper, control strategies for existing underwater gliders are reviewed. A total of 50 papers indexed by Scopus with keywords control and underwater gliders were reviewed from 1989 to 2014. The majority of gliders use classical controllers,...
The control strategy of torque-split between the shafts for electric vehicle has significant effects on the vehicle power performance. A dynamical model for studying the electric vehicle was established, taking account of not only the position of the accelerator pedal but also the wheel slip ratio. In this paper, a simulation platform of control system of torque-split between the shafts of this vehicle...
This paper proposes a new control strategy and design for auxiliary power source using in Battery Hybrid Electric Vehicle (BHEV) based on acceleration power. The control strategy takes actual speed, acceleration and terminal voltage of supercapacitors (SCs) into account for controlling the energy and power demanded. The detail design of the auxiliary power source and its dynamic control are demonstrated...
This paper presents a VHDL-AMS description of a Space Vector Pulse Width Modulation (SVPWM) and Sinusoidal Pulse Width Modulation control of a permanent magnet synchronous motor (PMSM) and exposes some high-level simulation results allowing a behavioral study with a virtual way. We compared between these two methods to optimize the response time of the Electric Vehicle.
To suppress vehicle rollover and sideslip risk effectively, this paper adopts time AR model to forecast vehicle motion parameters. Based on the forecast parameters, control strategies are established to control the vehicle rollover through the process of control-by-wire steering controller and suppress the vehicle sideslip by means of inhibiting the increase of centroid cornering angle. The way of...
Control for the HEV propulsion system based on dynamic processes is proposed. Parameters of the controller are optimized in order to optimize the dynamic characteristics. For the purpose of solving the problem that the energy consumption will increase while the dynamic characteristics are optimized, fuzzy control is put forward for the HEV. The dynamic characteristic is than improved, and the output...
The characteristic and classification of plug-in hybrid electrical vehicle introduced firstly. Then, a method for design and matching of PHEV and control strategy is introduced, an example of design and matching PHEV is given. Finally, simulate the PHEV model in different working conditions based on Advisor, comparing the simulation results with the protype vehicle, analyzing and illustrating some...
With a Hybrid Electric Bus (HEB) of rear-wheel drive as the study object, a hybrid dynamical system theory is introduced to formulate the powertrain system for HEB. A mode transform driven energy control strategy and coordinated regenerative braking control strategy was designed. Based on the hybrid automata model, the control model for the power-train system of HEB was founded. A hybrid modeling...
Hydrostatic energy-reserving transmission was composed of the hydrostatic pump/motor, high and low pressure accumulator, two-port inserted valve and control system. The mathematical model of hydrostatic pump/motor displacement servo control system and hydrostatic energy-reserving transmission was built. The simulation model of controller was established. The control strategy for Vehicle with hydrostatic...
This paper focuses on the problem of performing a robust transition maneuver for a particular class of tail sitter V/STOL (Vertical/Short Take-Off and Landing) aerial vehicles in which a switch from the hover flight towards the more efficient level flight configuration can be obtained by a change of the attitude. By considering also the presence of wind disturbances, this work proposes a control strategy...
This paper presents the design and simulation tests of a steering assistance for passenger vehicles based on a dynamic state feedback controller. Its main purpose is to avoid unintended lane departure and collisions. The design of the proposed lane keeping system takes into account the road curvature, considered as an exogenous input, into its internal model. The computation of the control law has...
Regenerative Brake System (RBS) is one of key technologies of new energy vehilces. An Electro-Hydraulic Parallel Brake System (EHPBS) is provided based on the conventional vehicle brake system which is an important section of RBS. The hydraulic brake section of the EHPBS is modeled and simulated to analyize the brake pressure control perfomance. In order to compare the solutions of single chunnel...
This paper describes SBW system structure and principle, establishes the dynamistic model of vehicle and SBW system. As is well known, the steering characteristics indicate handling performance on a vehicle and are important for safe driving, in this paper, a strategy to improve vehicle's stability and fast respond is proposed, which is based on ideal transmission ration and utilize yaw rate feedback...
In order to overcome the problems of linear control method, which are unfavorable performance and highly depending on the accuracy of vehicle model, active disturbance rejection control(ADRC) strategy is used to complete active front wheel steering(AFS) control in this paper. According to the general principle of ADRC, a second order ADRC strategy is designed. Under the operation conditions of high...
Fuel economy of city bus is poor, because the urban traffic is congested, the city bus is constantly in the idle condition resulting in fuel consumption is increasing. In order to improve the vehicle fuel economy and protect environment, the energy consumption characteristics of city bus are analyzed, and the energy consumption model is established. The energy-saving mechanism of the idling stop system...
A turning control strategy based on BP neutral network and modified by a PID algorithm is presented in this paper for the dual electric tracked vehicle. Firstly analyzed the tracked vehicle turning dynamics and establish the torque distribution strategy. The BP network is trained by data from the distribution strategy simulation results; the PID algorithm is used to eliminate the dependence of terra...
In a hybrid vehicle with dual power systems such as internal combustion engines working with conventional fuels and electric motors, each system has specific operational characteristics and requirements which these have to be matched with each other and at the same time with the vehicle itself. This dual power system is too complex especially from points of nonlinearity, uncertainty, and switching...
Assistant control is the main work process of automotive electric power steering (EPS) system. The assistant target current was achieved based on the design of straight-line type assist characteristic. The flexible PID control is acted on the motor according to the driver's input torque and the current vehicle speed. Using flexible PID control to track and control the motor current not only solved...
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