Modeling and Control of A High Speed On/Off Valve Actuator

A modified log-type creep model without hysteresis of the stack piezoelectric actuator is presented. For high-speed micro-/nanopositioning system, the time scale should be less than one second for creep modeling and control in the stack piezoelectric actuator. But creep effect was studied in the frame of minutes in previous works. Meanwhile, parameters of the classical creep models are hard to be determined. By the proposed model, the hysteresis and the creep effect can be separated. A series of experiments have been performed, where different staircase voltages have been applied to the actuator. There are two clear rules to follow in small duration and different heights to determine parameters. Firstly,L0starts from fixed point either in ascending stage or in descending stage and rotates clockwise. Secondly,γconverges to a small vicinity of a constant when the duration is small enough.

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Modeling and Control of Pantograph and Contact Wire for High Speed Train

10.1115/imece2000-1777 ◽

2000 ◽

Author(s):

Marco Muenchhof ◽

Timothy Hindle ◽

Tarunraj Singh

Keyword(s):

Control Strategy ◽

High Speed ◽

Control Strategies ◽

Optimization Techniques ◽

High Speed Train ◽

Modeling And Control ◽

Contact Wire ◽

Closed Form Solutions ◽

Mass Damper ◽

And Control

Abstract The paper focuses on the modeling and control of a catenary-pantograph system. For the catenary system, only the contact wire is considered. Initially, the case of a constant force traveling at a constant velocity along the wire is investigated and closed form solutions are derived. Next, the pantograph dynamics are considered using a simple spring-mass-damper model, where the force is no longer assumed to be constant. The need for control in this case is apparent and motivates two different control strategies. The first control strategy utilizes a feed-forward Fourier series control profile. For the second control strategy, a proportional force feed-back control is added. All control parameters are obtained using constrained optimization techniques. Stability and sensitivity issues are addressed.

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Modeling and control of high speed motors

2012 XXth International Conference on Electrical Machines ◽

10.1109/icelmach.2012.6350223 ◽

2012 ◽

Keyword(s):

High Speed ◽

Modeling And Control ◽

And Control

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Modeling and control of a high-speed discrete event system

Proceedings of 1994 9th IEEE International Symposium on Intelligent Control ◽

10.1109/isic.1994.367819 ◽

2002 ◽

Author(s):

M.-K. Ghabri ◽

P. Ladet

Keyword(s):

High Speed ◽

Discrete Event ◽

Discrete Event System ◽

Modeling And Control ◽

Event System ◽

And Control

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Modeling and control of MEMS with high speed synchronous micromotors and controllers/drivers-on-VLSI-chip ICs

Energy Conversion and Management ◽

10.1016/s0196-8904(02)00076-6 ◽

2003 ◽

Vol 44 (5) ◽

pp. 667-679 ◽

Cited By ~ 5

Author(s):

Sergey Edward Lyshevski

Keyword(s):

High Speed ◽

Modeling And Control ◽

Vlsi Chip ◽

And Control

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Modeling, Motion and Vibration Control for Flexible Rotor Supported by Active Magnetic Bearings

Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C ◽

10.1115/detc2005-85195 ◽

2005 ◽

Cited By ~ 3

Author(s):

Yuichi Nakajima ◽

Takahito Sagane ◽

Hiroshi Tajima ◽

Toru Watanabe ◽

Kazuto Seto

Keyword(s):

High Speed ◽

Magnetic Bearings ◽

Active Magnetic Bearings ◽

Flexible Rotor ◽

Bending Vibration ◽

Modeling And Control ◽

Control Approach ◽

Flexible Rotors ◽

Pass Through ◽

And Control

This paper proposes a new modeling technique and control system design for flexible rotors using active magnetic bearings (AMB) to pass through many critical speeds and fulfill high-speed rotation. To achieve this purpose, it is necessary to control not only motion but also many modes of bending vibration. For the purpose, an extended reduced order physical model that is able to express simultaneously the motion and bending vibration of the flexible rotor, is proposed. Furthermore, a new controller combined PID with LQ control is adapted to control the flexible rotor. Effectiveness of the proposed modeling and control approach for the flexible rotor is verified through simulations and experiments.

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