The Design of a Seat Controller for the Half Car Model in Various Vibrating Conditions Using the Seated Human Body Situation

Document Type : Dynamics, Vibrations, and Control

Authors

1 Assistant Professor, Department of Mechanical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran

2 MSc of Mechanical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran.

Abstract

A drivers’ body is continuously under various vibrations, resulting in different physical disorders such as muscle-skeletal defects, neurogenic diseases, cardiovascular problems, gastrointestinal disorders, etc. In this paper, firstly the nonlinear dynamic equations of a seated human body in the half car model are investigated analytically and linearized by means of the Taylor series. Then the obtained equations are analyzed numerically by the state-space method and employed for the design of multivariable controllers using the canonical and similar transformations. Finally, the controller performance of the system is optimized to suppress the transferred vibrations to the human body using the Genetic Algorithm (GA). The results show the RMS of human body acceleration in both the horizontal and vertical directions, to be 2.76m/s2 and 0.27m/s2, with and without the controller, respectively. It decreases to 0.06m/s2 with an optimized controller; which indicates that the controller acts satisfactorily and efficiently mitigates the human body vibrations.

Keywords

Smiley face

References

  1. Lewis, C.H., and Griffin, M.J., “A Review of the Effects of Vibration on Visual Acuity and Continuous Manual Control, Part II: Continuous Manual Control”, Journal of Sound and Vibration, Vol. 56, No. 3, pp. 415-457, 1978.##
  2. McLeod, R.W., and Griffin, M.J., “Review of the Effects of Translational Whole-Body Vibration on Continuous Manual Control Performance”, Journal of Sound and Vibration, Vol. 133 No. 1, pp. 55-115, 1989.##
  3. El Falou, W., Duchene, J., Grabisch, M., Hewson, D., Langeron, Y., and Lino, F., “Evaluation of Driver Discomfort during Long-Duration Car Driving”, Journal of Applied Ergonomics, Vol. 34, No. 3, pp. 249-255, 2003.##
  4. Nitti, R., and De Santis, P., “Assessment and Prediction of Whole-body Vibration Exposure in Transport Truck Drivers”, Journal of Industrial Health, Vol. 48, No. 5, pp. 628-637, 2010.##
  5. Monazam M. Nasiri P., Azam K., and Nasirloo E., “An Investigation of the Effect of Whole Body 64 Vibration with Frequency of 20-25 Hz on Mental Health of Students of Tehran University of Medical Sciences”, Journal of Health and Safety at Work, Vol. 1, No. 2, pp. 23-30, 2012.##
  6. Lakusic, S., Brcic, D., and Lakusic, V.T, “Analysis of Vehicle Vibrations – New Approach to Rating Pavement Condition of Urban Roads. Traffic Transport”, Scientific Journal on Traffic and Transportation Research, Vol. 23, No. 6, pp. 485-494, 2011.##
  7. Kim, K.S., Kim, J., and Kim, K.J., “Dynamic Modeling of Seated Human Body Based on Measurements of Apparent Inertia Matrix for Fore-and-aft/Vertical/Pitch Motion”, Journal of Sound and Vibration, Vol. 330,
    No. 23, pp. 5716-5735, 2011.##
  8. Khani Jazani, R., Saremi, M., kavousi, A., Monazam, M.R., and Abedi, M., “The Effect of Whole Body Vibration on Vehicle Driver’s Reaction Time and Mental and Physiological Workload, Drivers of Passenger Vehicles”, Journal of Analysis of Military and Health Sciences Research, Vol. 10, No. 4,
    pp. 278-284, 2013.##
  9. Blood, R.P., Rynell, P.W., Johnson, P.W., “Vehicle Design Influences Whole Body Vibration Exposures: Effect of the Location of the Front Axle Relative to the Cab”, Journal of Occupational and Environmental Hygiene, Vol. 8, No. 6, pp. 364-374, 2011.##
  10. Badran, S., Salah, A., Abbas, W., Abouelatta., A., “Design of Optimal Linear Suspension for Quarter Car with Human Model using Genetic Algorithms”, The Research Bulletin of Jordan ACM , Vol. 2, No. 2,
    pp. 42-51, 2012.##
  11. Nagarkar, M.P., Vikhe Patil., G.J., Zaware Patil, R.N., “Optimization of Non-linear Quarter Car Suspension– Seat– Driver Model”, Journal of Advanced Research, Vol. 7, No. 6, pp. 991-1007, 2016.##

12 Nasiri, S., Jaafari, H., Habibzadeh, S., Amini, R., “Effects of Uneven Tyre Vibrations on Driver’s Body, 2nd International Conference on Acoustics and Vibration (ISAV2012), Sharif University of Technology, Tehran, 2012 (In Persian).##

  1. Wang, Q., Ren, C., Zhang, L., “Research on Time-Delay Vibration Damping Control of Three Degrees
    Half-Vehicle Suspension System in Idle Condition”, International Journal of Engineering and Advanced Research Technology (IJEART), Vol. 3, No. 4, pp. 5-9, 2017.##
  2. Huang, C.J., Lin, J.S., Chen, C.C., “Road-Adaptive Algorithm Design of Half-Car Active Suspension System”, Journal of Expert Systems with Applications, Vol. 37, No. 6, pp. 4392–4402, 2010.##
  3. Askarzadeh, Z., Moradi, H., “Multivariable Control of Transmitted Vibrations to the Seat Model of the Human Body”, International Journal of Industrial Ergonomics, Vol. 56, pp. 69-83, 2016.##
  4. Abbas, W., Emam, A., Badran, S., Shebl, M., Abouelatta, O., “Optimal Seat and Suspension Design for a Half Car with Driver Model Using Genetic Algorithm”, Intelligent Control and Automation, Vol. 4, pp. 199-205, 2013.##
  5. Abtahi, S.M., Mirrahimi, S.A., “Integrated Control of Active Suspension and Anti-lock Braking System Based on the Nonlinear Improved Sliding Mode Control System”, Scientific Journal of Aerospace Mechanics, Vol. 16, No. 4, pp. 61-70, 2020.##

Files

History

  • Receive Date: 14 October 2020
  • Revise Date: 06 March 2021
  • Accept Date: 09 February 2022
  • Publish Date: 21 January 2022

Share

How to cite

Statistics