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A new type of powertrain system was developed for electric hybrid vehicles. It is mainly composed of engine, first electric motor, first shaft, synchronizer mechanism, second electric motor, planetary gear set and second shaft. The adoption of one planetary gear set and synchronizer mechanism make it can be operated in four different operation modes with high energy efficiency and lower cost, its four operation modes are pure electric driving, hybrid driving, independent engine driving and regenerative braking. These four operation modes can fit the vehicle practical conditions according to order from the control system.

In order to provide a new power train for electric hybrid vehicles that is simple in structure and lower in cost with higher fuel efficiency. A new power train for electric hybrid vehicle was designed with only one motor, one engine and a two speed ratio gear box. It has six different operation modes and can meet the vehicle driving requirements，and can provide pure electric drive, independent engine drive and hybrid drive with two speed ratios.

A new powertrain system was developed for electric vehicle driving application with adoption of one electric motor and one set of planetary gear set. With the control of fork, the sleeve of synchronizer can mesh two different parts on the left and right side; the system can provide pure electric driving, hybrid driving and regenerative braking operation modes to meet vehicle practical conditions. It can reduce both power train structure size and cost with fewer parts.

A new kind of power train was developed for low speed lorry with top speed less than 70km/h. this new hybrid power train is mainly consisted of clutch, transmission, engine, engine controller, vehicle controller, power battery, electric motor, and main differential. The main differential has a set of gear for power input, which is for engine and motor power coupling. This new system can provide pure engine driving, pure motor driving, hybrid driving, and braking energy regeneration according to different conditions, which can save energy and improve efficiency.

A new type power steering system was developed for electric hybrid city bus. It is mainly composed of fluid reservoir, electric motor, steering pump, safety valve, solenoid, pressure sensor, hydraulic cylinder, braking air tank, controller, steering wheel, steering angle sensor, steering control valve, mechanical steering mechanism, steering power cylinder. Its main idea is based on using of pressure from braking air tank to push a cylinder to generate hydraulic pressure. It can provide enough pressure for steering needing timely. And the steering pump does not need working at the time of no steering requirement. The application of a new type power steering system can save energy to improve fuel efficiency.

A new type of electric power train system was designed for fully hybrid electric city bus, which is mainly composed of engine, power coupling mechanism, first motor, second motor, motor controller, power train controller, power battery, and Drive axle. Its main characteristics of power coupling mechanism is adoption of one planetary gear set to realize the function that can be provided by two planetary gear sets. The new power train can be manufactured with lower cost because of its simple structure with higher transmission efficiency and less faults such as oil leakage. The new system can provide five operation modes for city bus, which are hybrid driving, pure electric driving, regenerative braking, grid charging, and stop charging.

A new type test bench was developed for power train used in electric hybrid vehicle. This bench was mainly composed of inertial flywheels, brake, clutch, dynameters, and controller. When testing the power train, the engine, power train, inertial flywheels, brake, clutch and dynameters are connected in series. One end of inertial flywheels is connected with output end of power train; the other end is connected with a clutch. Between the inertial flywheels and clutch, there is a brake for braking of flywheels. The clutch is for connection and disconnection of inertial flywheels and dynameters. This new test bench can perform different power modes with corresponding operation modes set in the main controller.

This study presents an adaptive logic-oriented neural control system for Unmanned Surface Vehicle (USV). An autonomous fuzzy neural controller is constructed by using rudder to regulate both the tracking error and heading error. The proposed approach based on logic-oriented neural network with domain knowledge easily incorporated in advance can be easily interpreted and it can be directly translated into a series of logic expressions formed over a collection of information granules. The proposed neural controller can adapt itself on-line from a direct evaluation of the control accuracy, so there is no need for a supervised training process. The control system is implemented in a model of USV. Simulations for track-keeping control under environmental wind and waves have been investigated. Simulation results presented in the paper demonstrate the effectiveness of the proposed scheme.

A new type hybrid power train system was developed for HEV, which can works as power coupling and transmission mechanism with three input shafts, one output shaft and fixed transmission ratios. The HEV adopting this new device can realize three operation modes: hybrid power driving mode, pure electric propulsion mode and electricity generation mode at vehicle stop condition. It can make engine work at optimum fuel consumption area, utilize motor to provide high start torque and realize modes conversion transform at probable rotation speed. The whole structure of this system is simple and easy manufactured, which can meet vehicle driving requirements at complicated conditions.

In pure electric vehicle and hybrid electric vehicle, the adoption of motor barking for energy recycling make its braking control more complicated. Making good use of braking energy can improve vehicle efficiency. A new method was developed to coordinate the motor regenerative braking and ABS braking. Which identify the road condition with real time basing on wheel speed information from four wheel speed sensors. Then control system decides the braking force provided by ABS system. The residual braking force is produced by motor barking to meet total braking force requirements. The two braking forces are coordinated by control system to perform brake function of vehicle.

The pure electric vehicles and hybrid electric vehicles are being developed and used wildly to save energy and reduce air pollution. In pure electric vehicles and hybrid electric vehicles, most of the steering hydraulic pump and braking sir pump have one electric motor to drive its pump. A new system with one electric motor for these two bumps was developed for application in pure electric vehicles（EVs） and hybrid electric vehicle ( HEVs). Comparison with conventional configuration, this new method can reduce cost and mounting space with compact size and higher energy efficiency. And the test results show that the new system can meet the requirements of HEV operation quite well.

the FEM model of unitary body of HEV city bus was established, and the model accuracy was proved by electric measurement. The Sensitivity analysis of stiffness was conducted to determine variables for optimization design basing on special analysis software tools. At last, the plan was formed to reach design target of light weight with least stiffness change and regulated strength of vehicle body.

The factors affecting regenerative braking performance of brushless DC motor(BLDCM) were analyzed by means of bench test and road test .the BLDCM was used as drive motor in a four –wheel-independent-drive EV. The relation between PWM duty and motor rotation speed, charging current and voltage were determined by test, which can benefit design of control strategy of regenerative braking for electric motor and help to improve energy efficiency.

The ABS, motor, Battery, fly wheels, wheel and roller are used to built test bench to measure coordinate control strategy between ABS braking and regenerative braking. The test bench can also be used to simulate engine brake during vehicle deceleration, and ABS control methods. This can reduce development time and cost effectively.

If static model of brake pipe pressure and torque model were used in brake system analysis and neglect their dynamic performance, it could cause bigger difference between simulation results and real condition. Some main dynamic models from experiments research are presented with brief introductions.

The temperature increment process was measured on test rig for disk brake of some car. And the changing model of disk brake was built using Boltzmann equation. Orthogonal experimental with two factors and three levels were conducted. And the results were analyzed based on quadratic regression method to get parameters of equation. The model can be used in temperature prediction.

To find transient braking factor changing model affected by its three main operation factors. A type of drum brake of passenger car was taken as the testing object, a series of practical tests were conducted in brake dynamometers with combination of orthogonal and recursive methods, a formula described transient friction coefficient of drum brake was deduced from test data on the basis of three main factors which are pressure, speed and temperature, which can reflect the drum brake’s performance changing condition influenced by three main factors.

In hybrid electric vehicles, there is a set of electricity generating system. This system was modified to meet requirements of vehicle-mounted power plant. The new system is mainly composed of engine, generator, planetary gears, motor, battery, transfer case, control system and etc. and the planetary gears mechanism has two sets of planetary, control system includes vehicle controller, engine controller, motor controller, and inventor. This system can perform the functions which include vehicle driving, generating with vehicle ruining and generating with vehicle stopping. It can meet requirements of special purse vehicles.

With development of intelligence technology, people applied all kinds of intelligent algorithms in ship tracking control. Unmanned surface vehicle (USV) raised less attention due to flexible features more complicated motion system and constantly changing according to the environment. In this work, based on previous achievements, a mathematic model of USV and the corresponding Simulink modules are established and then, Line of sight guidance (LOS) scheme is introduced to implement the feasibility of the ship's tracking control. Finally in Matlab, experimental simulations are conducted, which verify performance and accuracy of the proposed methodology.

According to the motion characteristic and hydrodynamics of high-speed deep-V planning, a real-time 6DOF mathematical motion model for the USV was built and the performance was simulated in Matlab/Simulink software tool. Then a fuzzy logic system for autonomous navigation of unmanned surface vehicles is presented. The control system intelligently controls the vehicle to go from origin to destination avoiding the obstacles in its path. Depending on the anticipated danger of the obstacle, the vehicle chooses an angle of divergence which avoids the obstacles and keeps the speed of the vehicle. The proposed control system of the vehicle has two main controllers. The first one is speed controller and the second one is nozzle controller. Compared with the actual sea trial data, the results show that the proposed model and fuzzy controller can better reflect and simulate the maneuverability of the USV under ocean environment.

The main character of pipe route arrangement of a ship is to search a feasible path that connects given locations and avoids all obstacles in an engine room environment scattered with equipments and components, at the same time, the selected route should meet special evaluation conditions. Spatial effect is an important factor in the evaluation of pipelines, but is ignored in most existing optimize algorithms or the given methods are too complicated. Orientation-location distribution algorithm is presented to evaluate the spatial effect of pipe-routing. According to the location and direction of pipeline, different spatial effect coefficients are given and used to cost modification of routes to get the optimum layout. The presented algorithm is simple and feasible.

In order to detect weak fault eigenfrequency submerged in noises environment, a multitaper-based detection method was developed for incipient motor faults. The tradeoff problem between frequency resolution and variance was studied, and the optimal tradeoff value was chosen to be applied on detecting motor faults. By selecting high energy tapers, the root leakage of eigenfrequency was eliminated, and the shape of eigenfrequency was changed to be distinguishable. Simulation studies were conducted and results show that Multi-Taper Method has a more steady and antinoise performance compared with other methods. Finally, an experiment was arranged in laboratory, and the bear faults were put into the motor. By using the method proposed, it is validated that Multi-taper Method is effective for detecting the motor incipient faults.