Electric motor-based crankshaft stop position control to suppress range extender start vibration in electric vehicle

Guo, Rong; Han, Shihao; Wang, Meng-Jia; Cao, Chong

doi:10.1177/0263092317711598

Cited by 4 publications

(4 citation statements)

References 22 publications

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“…The common sources of random vibrations in UAVs are the electronic components mounted over the UAV systems for maintaining the pavement roughness, acoustic pressure and air disturbance that may lead to vibration. These vibrations have very strong random characteristics, causing the problem of transition from one stable state to another, and leading to the failure state [7, 8]. The issue of altitude estimation is one of the common problems during the flight path which eventually leads to random vibrations.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: A flight control method for unmanned aerial vehicles based on vibration suppression

Wang

Zhang

Gong

et al. 2021

IET Collab Intel Manufact

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The development of unmanned aerial vehicle (UAVs) has gained importance in recent years for various applications like photography, inspection of infrastructure and various agricultural applications. Various researchers have carried out numerous attempts at optimisation control of UAVs and their flight range maximisation. However, a few attempts have addressed structural deformation effects on the reliability and safety of UAVs. In order to study the effect of structural deformation on the reliability and safety of UAVs under normal flight conditions, a certain type of UAV as a research object is discussed and the augmented tracking model based on the original object system by using the Lyapunov function is built up. The performance is observed in terms of rise time and overshoot and it is observed from the simulation outcomes that the system is stable at all design points in the range of 0-9000 m, providing a rise time of 10 s and zero overshoot. From this study, it is revealed that the designed controller can effectively suppress the vibration of the flexible mode while ensuring the stability and tracking performance of the UAV.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: A flight control method for unmanned aerial vehicles based on vibration suppression

Wang

Zhang

Gong

et al. 2021

IET Collab Intel Manufact

View full text Add to dashboard Cite

show abstract

“…In addition, regarding the control method of torsional vibration of the range extender, early research mainly concerned vibration control during the start and stop processes of the engine (Guo and Wang, 2016, 2017a, 2017b; Guo et al, 2009; Hwang, 2013), as well as engine torque compensation control (Andert et al, 2017; Xiong et al, 2020); however, there has been less research on controlling the typical working process of the range extender.…”

Section: Introductionmentioning

confidence: 99%

Analysis and active control of torsional vibration in range extender with internal combustion engine

Meng

Liu

Zhang

et al. 2022

Journal of Vibration and Control

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The noise of extended-range electric vehicles is an industry concern, with the range extender providing the main noise source. Suppressing torsional vibration is important for reducing the noise of the range extender. A new combined model of system dynamics, generator control, range extender control, and active vibration control is proposed. The working state and torsional vibration characteristics of the model were analyzed under typical working conditions for the start, idling, stable operation, and stop stages. Under steady-state working conditions, for example, idling and stable operation stages, the torsional vibration of the range extender is mainly related to the excitation torque fluctuation of the engine, and when switching the operation stage (e.g., from idling to stable operation), it is mainly related to sudden changes in the generator and engine torque. An active vibration control model—including active torque composition controllers for engine torque fluctuation and switching the operation mode—is established. The simulation showed that active control effectively improved the torsional vibration and provided a new concept for controlling torsional vibration.

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“…3 This significant class of problems can cause the transition of the system from one stable state to the failure state. 4 During the flight path, the attitude estimation is the most noticeable problem caused by the random vibrations. The subsystems in the UAV such as MEMS gyros, cameras and accelerometers can be very sensitive to the vibration, and the filtering algorithm cannot always fix the problem, making the attitude estimation useless.…”

Section: Introductionmentioning

confidence: 99%

“…3 This significant class of problems can cause the transition of the system from one stable state to the failure state. 4…”

Section: Introductionmentioning

confidence: 99%

Random vibrations in unmanned aerial vehicles, mathematical analysis and control methodology based on expectation and probability

Аl-Мashhadani

2018

Journal of Low Frequency Noise, Vibration and Active Control

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The analysis of the random vibrations that occur during the flight of the unmanned aerial vehicles is important, as these random vibrations have random characteristic properties and have the ability to decrease the endurance of such systems. The accuracy of data collected from sensors in the unmanned aerial vehicle system is important for the flight control system. The transferring of these data among different sensors such as inertial measurement unit, axis accelerometers, GPS or cameras is usually affected by many factors. One of the important factors is the random vibration, which is usually caused by aerodynamic excitation or air turbulence. The problem of random vibrations has been studied for a long time and explained in many text books. In this study, the author introduces a mathematical analysis for random vibrations that are independent of their sources by considering these vibrations as a random and non-stationary process and designs a control methodology based on expectations and probability theory to reduce the effect of these vibrations. The analysis used in this research is based on the assumptions of practical approximation techniques.

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Electric motor-based crankshaft stop position control to suppress range extender start vibration in electric vehicle

Cited by 4 publications

References 22 publications

RETRACTED: A flight control method for unmanned aerial vehicles based on vibration suppression

RETRACTED: A flight control method for unmanned aerial vehicles based on vibration suppression

Analysis and active control of torsional vibration in range extender with internal combustion engine

Random vibrations in unmanned aerial vehicles, mathematical analysis and control methodology based on expectation and probability

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