An approach to control a hydrostatic dynamometer for the Hardware-In-the-Loop (HIL) testing of hybrid vehicles has been developed and experimentally tested. The hydrostatic dynamometer used, which is capable of regeneration, was specifically designed and built in-house to evaluate the fuel economy and control strategy of a hydraulic hybrid vehicle. The control challenge comes from the inertia of the dynamometer being only 3% of that of the actual vehicle so that the dynamometer must apply, in addition to any drag torques, acceleration/deceleration torques related to the difference in inertias. To avoid estimating the acceleration which would be a non-causal operation, a virtual vehicle concept is introduced. The virtual vehicle model generates a reference speed profile which represents the behavior of the actual vehicle if driven on the road. The dynamometer control problem becomes one of enabling the actual vehicle-dyno shaft to track the speed of the virtual vehicle, instead of directly applying a desired torque. A feedback/feedforward controller was designed based upon an experimentally validated dynamic model of the dynamometer. The approach was successfully tested on a power-split hydraulic hybrid vehicle with acceptable speed and torque tracking performance.
|Original language||English (US)|
|Title of host publication||Active Control of Aerospace Structure; Motion Control; Aerospace Control; Assistive Robotic Systems; Bio-Inspired Systems; Biomedical/Bioengineering Applications; Building Energy Systems; Condition Based Monitoring; Control Design for Drilling Automation; Control of Ground Vehicles, Manipulators, Mechatronic Systems; Controls for Manufacturing; Distributed Control; Dynamic Modeling for Vehicle Systems; Dynamics and Control of Mobile and Locomotion Robots; Electrochemical Energy Systems|
|Publisher||American Society of Mechanical Engineers|
|State||Published - 2014|
|Event||ASME 2014 Dynamic Systems and Control Conference, DSCC 2014 - San Antonio, United States|
Duration: Oct 22 2014 → Oct 24 2014
|Name||ASME 2014 Dynamic Systems and Control Conference, DSCC 2014|
|Other||ASME 2014 Dynamic Systems and Control Conference, DSCC 2014|
|Period||10/22/14 → 10/24/14|
Bibliographical notePublisher Copyright:
Copyright © 2014 by ASME.
Copyright 2020 Elsevier B.V., All rights reserved.