scholarly journals Simulation Model and Method for Active Torsional Vibration Control of an HEV

2018 ◽  
Vol 9 (1) ◽  
pp. 34 ◽  
Author(s):  
Biqing Zhong ◽  
Bin Deng ◽  
Han Zhao
Keyword(s):  
Simulation Model ◽  
Vibration Control ◽  
Active Control ◽  
Torsional Vibration ◽  
Dynamic Models ◽  
Control Method ◽  
Vehicle Body ◽  
Bench Test ◽  
Torsional Angle ◽  
Hybrid Electric

Hybrid electric vehicles (HEV) might cause new noise vibration and harshness (NVH) problems, due to their complex powertrain systems. Therefore, in this paper, a new longitudinal dynamic simulation model of a series-parallel hybrid electric bus with an active torsional vibration control module is proposed. First, the schematic diagrams of the simulation model architecture and the active control strategy are given, and the dynamic models of the main components are introduced. Second, taking advantage of the characteristics of hybrid systems, a method of determining the key dynamic parameters by a bench test is proposed. Finally, in a typical bus-driving cycle for Chinese urban conditions, time domain and frequency domain processing methods are used to analyze vehicle body jerk, fluctuation of rotational speed, and torsional angle of the key components. The results show that the active control method can greatly improve the system’s torsional vibration performance when switching modes and at resonance.

scholarly journals Cooperative Control Method of Active and Semiactive Control: New Framework for Vibration Control

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Kazuhiko Hiramoto
Keyword(s):  
Vibration Control ◽  
Active Control ◽  
Cooperative Control ◽  
Control Method ◽  
Design Method ◽  
Control Object ◽  
Control Device ◽  
Semiactive Control ◽  
Control Input ◽  
Control Approach

A new control design framework for vibration control, the cooperative control of active and semiactive control, is proposed in the paper. In the cooperative control, a structural system having both of an actuator and a semiactive control device, for example, MR damper and so forth, is defined as the control object. In the proposed control approach, the higher control performance is aimed by the cooperative control between the active control with the actuator and the semiactive control with the semiactive control device. A design method to determine the active control input and the command signal to drive the semiactive control device based on the one-step prediction of the control output is proposed. A simulation example of a control system design for a benchmark building is presented to show the effectiveness of the proposed control framework.

scholarly journals Active Control Method for Torsional Vibration of DFIG Drive Chain Under Asymmetric Power Grid Fault

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 155611-155618 ◽  
Author(s):  
Shiji Tian ◽  
Zhongyi Li ◽  
Hui Li ◽  
Yihua Hu ◽  
Min Lu
Keyword(s):  
Active Control ◽  
Torsional Vibration ◽  
Control Method ◽  
Power Grid ◽  
Asymmetric Power ◽  
Drive Chain ◽  
Active Control Method

scholarly journals Research on Gear Shifting Process without Disengaging Clutch for a Parallel Hybrid Electric Vehicle Equipped with AMT

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Hui-Long Yu ◽  
Jun-Qiang Xi ◽  
Feng-qi Zhang ◽  
Yu-hui Hu
Keyword(s):  
Electric Vehicle ◽  
Control Strategy ◽  
Hybrid Electric Vehicle ◽  
Dynamic Models ◽  
Bench Test ◽  
Mechanical Transmission ◽  
Transient States ◽  
Parallel Hybrid Electric Vehicle ◽  
Parallel Hybrid ◽  
Hybrid Electric

Dynamic models of a single-shaft parallel hybrid electric vehicle (HEV) equipped with automated mechanical transmission (AMT) were described in different working stages during a gear shifting process without disengaging clutch. Parameters affecting the gear shifting time, components life, and gear shifting jerk in different transient states during a gear shifting process were deeply analyzed. The mathematical models considering the detailed synchronizer working process which can explain the gear shifting failure, long time gear shifting, and frequent synchronizer failure phenomenon in HEV were derived. Dynamic coordinated control strategy of the engine, motor, and actuators in different transient states considering the detailed working stages of synchronizer in a gear shifting process of a HEV is for the first time innovatively proposed according to the state of art references. Bench test and real road test results show that the proposed control strategy can improve the gear shifting quality in all its evaluation indexes significantly.

Application of a Proportional Feedback Controller for Active Control of a Vibration Isolator

2005 ◽  
Vol 24 (3) ◽  
pp. 181-190 ◽  
Author(s):  
Yun-Hui Liu
Keyword(s):  
Vibration Control ◽  
Active Control ◽  
Control Method ◽  
Active Vibration Control ◽  
Feedback Signal ◽  
Total System ◽  
Vibration Isolator ◽  
Active Vibration ◽  
Proportional Controller ◽  
The Voice

This paper proposes the application of a proportional controller to active vibration control incorporated with a passive vibration isolator to suppress its resonant oscillation at its natural frequency. Vibration acceleration acquired from an accelerometer is fed to the controller as a feedback signal. The processed signal from the controller is transmitted to the voice coil actuator in order to control the vibration. Firstly, based on the theoretical equations which govern the vibrational system, the physical mechanism of active control in the total system is studied. Then, vibration on a stiff foundation and passive isolator is measured in order to understand the efficiency of the traditional vibration control method. Finally, an experiment on active vibration control is performed to study the suppression efficiency of the oscillation of the passive vibration isolator. The experiment results show that 99% of the vibration energy can be cancelled by active control.

Torsional Vibration Control of a Hooke’s Joint Driven Flexible Shaft System

2014 ◽  
Author(s):  
Samuel F. Asokanthan ◽  
Xiao-Hui Wang ◽  
Seung-Hoon Baik
Keyword(s):  
Vibration Control ◽  
Torsional Vibration ◽  
Control Method ◽  
Controller Design ◽  
Velocity Ratio ◽  
Analytical Models ◽  
Time Varying ◽  
Varying Coefficients ◽  
Time Varying Coefficients ◽  
Hooke’S Joint

Torsional vibration control of a rotating mechanical system which incorporates a Hooke’s joint is investigated by pole assignment techniques. Linearized analytical models for the torsional system are established for the purposes of controller design. The resulting two-degree-of-freedom rotational system which contains time varying coefficients is parametrically excited due to an inherent non-linear velocity ratio across the Hooke’s joint. The controller is designed via full state feedback and observer based feedback in the transformed domain, using Lyapunov transformation. This transformation reduces the original time-varying system to a form suitable for controller design. A dual-system approach is employed to calculate the observer gain matrix for the time-varying system. Numerical simulation results show that the proposed control method is effective for suppressing torsional vibration of a Hooke’s joint driven system.

Active Vibration Control for the Measurement of Fluidelastic Effects

2003 ◽  
Vol 125 (2) ◽  
pp. 165-170 ◽  
Author(s):  
Se´bastien Caillaud ◽  
Emmanuel de Langre ◽  
Franck Baj
Keyword(s):  
Vibration Control ◽  
Flow Velocity ◽  
Active Control ◽  
Control Method ◽  
Active Vibration Control ◽  
Two Phase ◽  
Single Input Single Output ◽  
Fluidelastic Instability ◽  
Active Vibration ◽  
Active Control Method

A new method based on active vibration control is proposed to investigate fluidelastic coupling effects beyond fluidelastic instability. This active control method allows to extend the range of flow velocity explored for single input-single output control systems. The method is applied on a flexible tube inserted in a rigid bundle in water and air-water cross-flows. This structure becomes unstable for high flow velocities, fluidelastic forces then causing the damping of the fluid-structure system to fall towards zero. The active control method allows to carry out tests beyond the fluidelastic instability. The flow velocity range explored is doubled in two-phase flow.

scholarly journals Partial Frequency Assignment for Torsional Vibration Control of Complex Marine Propulsion Shafting Systems

2019 ◽  
Vol 10 (1) ◽  
pp. 147
Author(s):  
Meilong Chen ◽  
Huajiang Ouyang ◽  
Wanyou Li ◽  
Donghua Wang ◽  
Siyuan Liu
Keyword(s):  
Vibration Control ◽  
Natural Frequency ◽  
Torsional Vibration ◽  
Control Method ◽  
Excitation Frequency ◽  
Frequency Assignment ◽  
Effective Control ◽  
Partial Frequency ◽  
Structural Modifications ◽  
Ship Propulsion

With the large-scale and complexity of ship propulsion shafting, it is more difficult to analyze and control the torsional vibration of shafting. Therefore, an effective control method for the torsional vibration of shafting is of great significance in the field of ship engineering. The main strategy of torsional vibration control adopted in this paper is to keep the natural frequency of a shaft system away from the excitation frequency through structural modifications. In addition, because the basic parameters of much of the equipment in engineering applications cannot be changed, this restriction cannot be ignored when seeking solutions related to structural modifications. This paper studies the partial eigenvalue assignment for the torsional vibration control of complex ship propulsion shafting using the gradient flow method, which can shift a “dangerous” natural frequency to a safe value, while satisfying complex physical constraints. The models of a ship propulsion system and a diesel generator set are established to demonstrate several different desired modification schemes and constraint conditions in practice. In particular, close frequencies are shifted. The numerical simulation results demonstrate that it is effective and feasible to make a partial frequency assignment of torsional vibration, which provides a reliable approach for the control of torsional vibration for complex shaft systems in practical engineering.

Active Vibration Control Methods of Axially Moving Materials - A Review

2004 ◽  
Vol 10 (4) ◽  
pp. 475-491 ◽  
Author(s):  
Jianjun Wang ◽  
Qihan Li
Keyword(s):  
Transfer Function ◽  
Vibration Control ◽  
Active Control ◽  
Control Method ◽  
Active Vibration Control ◽  
Control Methods ◽  
The Past ◽  
Active Vibration ◽  
Axially Moving ◽  
Active Wave

In this paper we provide a review of the state of the art for active vibration control of axially moving materials (string and beam, etc.) in the past ten years, with particular regard to the subjects of some important active control methods of axially moving strings. First, an introduction is given to explain the aims and scope of this paper. This is followed by a comprehensive discussion of the active wave control methods presented by many investigators in the past ten years, including feedback control methods (such as the modal control method, the direct velocity feedback control method and the control method via transfer function formulation), active wave control methods combining transfer function, boundary control methods using the Lyapunov function, the variable structure control method, the adaptive control method, the vibration control of an axially moving beam and the active control of a moving material with arbitrarily varying length, etc. Finally, we conclude with a discussion of several issues for future research in this area.

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