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Hybrid powertrain concept evaluation using optimization

Hybrid powertrain concept evaluation using optimization

25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition: Sustainable Mobility Revolution, EVS 2010

作者： Murgovski, Nikolce Fredriksson, Jonas Sjöberg, Jonas Norén, Bengt Department of Signals and Systems Division of Automatic Control Automation and Mechatronics Chalmers University of Technology Gothenburge Sweden Complete Powertrain Powertrain Engineering Volvo Cars Corporation. Dept 97520-PV3B-Gothenburge Sweden

This paper describes automatic evaluation of series-parallel (combined) powertrain models using optimization. The novelty with the approach is the possibility to work with non-transparent industrial vehicle models, hidden for intellectual property reasons. The contribution extends the functionality of a recently developed tool for parallel hybrids, with the ability to operate on combined powertrains. Given the user inputs, which include dynamic vehicle model and driving cycle, the tool first produces a simplified powertrain model in the form of static maps, before dynamic programming is used to find an optimal torque split that minimizes fuel consumption. The main use of the tool is to evaluate the potential of a powertrain configuration. The paper contains an illustration of the tool operation on a non-transparent industrial vehicle model. The only requirement on the model is to provide access to some general variables and that it has a torque split that can be fully controlled.

关键词： Hybrid vehicles

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Pseudo control hedging and its application for safe flight envelope protection

Pseudo control hedging and its application for safe flight e...

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AIAA Guidance, Navigation, and control Conference

作者： Lombaerts, T.J.J. Looye, G.H.N. Chu, Q.P. Mulder, J.A. Delft University of Technology P.O. Box 5058 2600 GB Delft Netherlands German Aerospace Center DLR Münchner Straße 20 82234 Wessling Germany Control and Simulation Division Faculty of Aerospace Engineering Germany Institute of Robotics and Mechatronics Department of System Dynamics and Control Germany

ISBN: (纸本)9781600869624

This paper describes how the previously developed concept of Pseudo control Hedging (PCH) can be integrated in a Fault Tolerant Flight controller (FTFC) as a safe flight envelope protection system of the first degree. This PCH algorithm adapts the reference model for the system output in case of unachievable commands due to control input saturation. As an example, this algorithm has been applied in the pitch rate and velocity control loops of a high fidelity Boeing 747 simulation model where its beneficial influence has been illustrated. The nonlinear adaptive control law used for this example is a triple layered nonlinear dynamic inversion algorithm, based upon the concept of time scale separation. Copyright © 2010 by the authors.

关键词： Flight envelopes

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Modeling of Transversal Dynamics of Stepped Beams in Case of Boundary-Excitation

Modeling of Transversal Dynamics of Stepped Beams in Case of...

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American control Conference

作者： S. Klose U. Konigorski Technische Universitat Darmstadt Institute of Automatic Control Laborartory of Control Engineering and Mechatronics Landgraf-Georg-Str. 4 64283 Darmstadt Germany

ISBN: (纸本)9781424474264

In this paper a dynamic model of a stepped beam excited by an electrodynamical actuator with non-negligible dynamics at one end is derived. As model ansatz the superposition of rigid-body and modal dynamics is chosen. This results in the assumption of separated rigid-body and modal dynamics. The modal part of the beam dynamics is modeled as a cantilever beam with inhomogeneous boundary conditions. The solution of the modal transversal displacement is developed in a fourier series with the eigenfunctions of the spatial eigenvalue problem (EVP) as basis functions. The EVP is solved for a stepped beam by defining spatial-transfer-matrices. It can be seen that the location of the discontinuity in the cross-sectional area is an appropriate degree of freedom for relocating a particular eigenfrequency in combination of amplifying the corresponding eigenmode. Finally, the entire system dynamics with two different stepped beams is measured and the results are compared with the theoretical considerations.

关键词： Structural beams Actuators Eigenvalues and eigenfunctions Fourier series Boundary conditions Gravity Automatic control control engineering mechatronics control design

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Study total least squares method compensate the test error of testing PIGA

Study total least squares method compensate the test error o...

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Chinese control and Decision Conference, CCDC

作者： Fengxia Xu Zhongda Lu Jinfeng Zhang School of Mechatronics Engineering Harbin Institute of Technology 150001 China College of Computer and Control Engineering Qiqihar University 161006 China College of Computer and Control Engineering Qiqihar University Qiqihar China

To study the impact of the instrument test precision caused by the outer gimbal disturbance torque which relevant to structure of instrument, design test of separating outer gimbal disturbance torque of PIGA on three-axes turntable; The test of testing PIGA having position error of three-axes turntable has been analyzed, the reason of arouse three-axes turntable position error is location error and dynamic unbalance disturbance, and the effects on instrument test of two kinds error is researched. Adopt total least squares with noise removing to compensate position error of three-axes turntable is proposed. The test shows that the existing of outer gimbal disturbance torque influencing the testing precision of PIGA, and the compensated effect of using total least squares in test error of PIGA.

关键词： Testing Least squares methods Torque Instruments Error correction Educational institutions Acceleration Accelerometers Computer errors mechatronics

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Motion planning of multiple mobile robots with formation requirement

Motion planning of multiple mobile robots with formation req...

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2010 IEEE International Conference on Information and Automation, ICIA 2010

作者： Liu, Shuang Sun, Dong Zhu, Changan Control and Mechatronics Group University of Hong Kong University of Science and Technology of China Suzhou China Department of Manufacturing Engineering and Engineering Management City University of Hong Kong Hong Kong Hong Kong Department of Precision Machinery and Precision Instrumentations University of Science and Technology of China Hefei China

ISBN: (纸本)9781424457021

This paper presents a motion planning approach to coordinating multiple mobile robots in moving along the designed paths. The robots are required to fulfill the formation requirement during the motions subject to the constraints of velocity/acceleration bounds and mutual collision avoidance. The coordination is achieved by properly planning robots' velocities along the paths, which is modeled as a velocity optimization problem. An objective function to minimize the formation errors is established. A solution to achieve this objective function is obtained by the optimizer of LINGO (a linear interactive and general optimizer). Simulations and experiments are performed on a group of mobile robots to demonstrate the effectiveness of the proposed approach. ©2010 IEEE.

关键词： Motion planning

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Camera parameters auto-adjusting technique for robust robot vision

Camera parameters auto-adjusting technique for robust robot ...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Huimin Lu Hui Zhang Shaowu Yang Zhiqiang Zheng Department of Automatic Control College of Mechatronics Engineering and Automation National University of Defense Technology Changsha Hunan China

How to make vision system work robustly under dynamic light conditions is still a challenging research focus in computer/robot vision community. In this paper, a novel camera parameters auto-adjusting technique based on image entropy is proposed. Firstly image entropy is defined and its relationship with camera parameters is verified by experiments. Then how to optimize the camera parameters based on image entropy is proposed to make robot vision adaptive to the different light conditions. The algorithm is tested by using the omnidirectional vision in indoor RoboCup Middle Size League environment and the perspective camera in outdoor ordinary environment, and the results show that the method is effective and color constancy to some extent can be achieved.

关键词： Robot vision systems Cameras Robustness Entropy Machine vision Algorithm design and analysis Robotics and automation Focusing Computer vision Image processing

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Creative practice based on Freescale processor smart car with photoelectric sensor

Creative practice based on Freescale processor smart car wit...

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International Conference on Communication System Networks and Applications (ICCSNA)

作者： Huang Junhua Li Li Liang Xianlin Zhang Hongbing College of Mechatronics and Control Engineering Shenzhen University China Laboratory and Facility Management Division Shenzhen University China

This paper presents the design of a smart car system based on the Freescale MC9S12SX128 processor. Infrared photoelectric sensor was used to percept the path information. The motor driving system was designed with the MOSFET circuit and controlled by the PID algorithm. With the speed feedback module and steering gear module, the smart car can run along the track steadily and rapidly.

关键词： MOSFET circuits Electron tubes Transmitters DC motors Receivers Interference PD control

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Auxiliary Model-based Stochastic Gradient Algorithm for Multivariable Output Error Systems

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自动化学报 2010年第7期36卷 993-998页

作者： DING Feng LIU Xiao-Ping School of Communication and Control Engineering Jiangnan University Wuxi 214122 P.R. China School of Mechatronics Engineering Nanchang University Nanchang 330031 P.R. China Department of Systems and Computer Engineering Carleton University Ottawa K1S 5B6 Canada

The identification problem of multivariable output error systems is considered in this paper. By constructing an auxiliary model using available input-output data and by replacing the unknown inner variables in the information vector with the outputs of the auxiliary model, an auxiliary model-based stochastic gradient (AM-SG) identification algorithm is presented. Convergence analysis using the martingale convergence theorem indicates that the parameter estimates given by the AM-SG algorithm converge to their true values. The AM-SG algorithm with a forgetting factor is given to improve its convergence rate. The simulation results confirm the theoretical findings.

关键词：多变量输出误差辨识系统自动化系统

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Unknown input-proportional integral observer for singular systems: Application to fault detection

Unknown input-proportional integral observer for singular sy...

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2010 18th Iranian Conference on Electrical engineering, ICEE 2010

作者： Share Pasand, M.M. Aliyari Sh, M. Taghirad, H.D. Department of Systems and Control Faculty of Electrical and Computer Engineering K.N. Toosi University of Technology Tehran Iran Department of Mechatronics K.N. Toosi University of Technology P.O. Box 16315-1355 Tehran Iran

ISBN: (纸本)9781424467600

A new approach to the observer design for descriptor continuous time systems is proposed and its application in the fault diagnosis problem is illustrated. In this observer, two features of disturbance decoupling and fault estimation are combined. Also a more general frame for fault estimation is used. Some numerical examples and simulation results are shown to justify the effectiveness of the algorithm. ©2010 IEEE.

关键词： Fault detection

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Research on Servo Feeding System of Micro WEDM

Research on Servo Feeding System of Micro WEDM

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2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)

作者： R. N.Huang Y.J.Lou GX. Chi Division of Control and Mechatronics Engineering Harbin Institute of Technology Shenzhen Graduate Sc Department of Mechanical Engineering Harbin Institute of Technology Harbin China

This paper presents a servo feeding system of Micro WEDM. It applied incomplete derivation PID controller to reduce overshoot, and adopted adaptive dead-zone inverse compensation to eliminate dead-zone, which caused by piezoelectric ceramics motions in low speed. The result of simulation shows that this method can make the system to recover its linearity and the dead-zone parameters are convergent. And the result of experiment shows that the servo feeding system satisfies the need of Micro WEDM.

关键词： adaptive control incomplete derivation PID controller Micro WEDM servo feeding

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