In this context, the present work aims to present a test rig that allows to study the BDS dynamics and power loss characteristics. Furthermore, the test rig offers major advantages over the utilization of traditional engine cells. Measurements obtained in such testing environments have a high level of uncertainty due to the uncontrollable irregu- larities that characterize the phiysical phenomena occuring into the ICE. The designed test rig allows the reproduction of a realistic and controllable testing environment. The use of two electric motors for the dynamic simulation of   the

2405-8963 © 2016, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved. Peer review under responsibility of International Federation of Automatic Control.

10.1016/j.ifacol.2016.10.509

Table 1. Nomenclature

AC = air conditioning

AT = automatic tensioner

b = belt

bp = transition between belt and pul- ley

BSG = belt-starter generator

CS = crankshaft

eBSG/CS   = error  of  belt-starter generator

and crankshaft control

FpAT  = force applied on automatic belt tensioner

idk  = direct current (k = BSG, CS) iqk = quadrature current (k =

BSG, CS)

IDL = idler

IBSG/CS   = current on belt-starter generator and crankshaft

ICScont  = control current on crankshaft

Jpi, Cpi, Kpi = rotational inertia, viscous

damping and stiffness of i-th pulley(i = AC, BSG,CS,IDL)

Jbi, Cbi, Kbi = rotational inertia, viscous damp-

ing and stiffness of the arc of contact of i-th pulley (i  = AC, BSG,CS,IDL)

JpAT , CpAT , KpAT  = rotational inertia, viscous damp-

ing and stiffness of the auto- matic tensioner pulley

Kek  = electromagnetic motor constant (k = BSG, CS)

Ldk  = direct inductance (k =

BSG, CS)

Lqk  = quadrature  inductance  (k   =

BSG, CS)

maAT , CaAT , KaAT  = mass, viscous damping and stiff-

ness of the arm of the automatic tensioner

Mk  = torque applied by the motor on the k-th shaft (k = BSG,  CS)

Mpi =    torque    applied     by     the belt   on   i-th   pulley(i   = AC, BSG,CS,IDL)

MCS  = output  torque  from crankshaft motor

MBSGact/cont/ref  = actual,    control    and    reference

torque on belt-starter  generator