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                                                                         All these systems have to be mounted
                                                                         within the existing engine compartment.
                                                                         The mobility criterion of the existing
                                                                         vehicle is to be retained in this upgraded
                                                                         system. The upgraded system is
                                                                         electronically interfaced by means of
                                                                         a Main Controller Unit (MCU) with
                                                                         engine control unit and transmission
                                                                         control unit. The systems interact with
                                                                         each other on a J1939 protocol wherein
                                                                         all control commands, system health
                                                                         checks, interlocks and diagnostics data
                                                                         are interfaced. The MCU interfaced with
                                                                         a telemetry system for wireless control
                                                                         of the powerpack. A GUI is provided for
                                                                         the operator to monitor and operate the
                                                                         system. A number of technical difficulties
                                                                         were overcome by CVRDE during the
Testing of Autonomous Navigation at MFFR                                 realisation of this powerpack. This is the

                                                                         first electronically controlled powerpack
accelerator, brake, etc.) through a set by appropriate electronic signals, without of this class in India.
of EMAs. The feedback from the DBW the intervening need for an electro-  The 400 hp ECPP was integrated in a
controller and from the localisation mechanical DBW system. Along with the BMP-II vehicle and was extensively field
sensors is used for the closed loop control 400 hp powerpack (with electronically validated at MFFR during November-
of the vehicle to ensure that it follows the controlled engine, automatic transmission December 2015. During the successful
specified GPS way points.                   and brake system) the required auxiliaries field validation of the 400 hp ECPP, it
Various obstacle detection strategies (viz. cooling system, air filtration system, was found the response and the handling
and navigation algorithms were developed etc.) were also developed.      characteristics of the vehicle were better as
and implemented for the ANS module.                                      compared to a manually operated BMP-II
Integration, testing and demonstration                                   vehicle.
of the autonomous navigation system on
MUNTRA-S were successfully completed
in June 2014 at MFFR.                       Salient Features of the 400 hp Electronically

Electronically Controlled Engine            Controlled Power Pack

Powerpack Make Cummins

    The existing BMP-II vehicle is fitted   Engine power             394 hp @ 2100 rpm
with a 300 hp (UTD-20) powerpack with       Engine torque            1700 Nm @ 1350 rpm
manual transmission and steering system.    Engine type              Inline 6 cylinder, 4 stroke
For this UGV project, the interface to the  Cubic capacity           8.9 l
engine was through the EMAs attached        Idle speed               600-800 rpm
to the vehicle driving controls (steering,  Transmission
accelerator, brake, etc.). This introduces  Make                     Allison
latency in the response of the UGV. To      Max gross input power    400 h
overcome this latency, a direct electronic  Gross input torque       1423 Nm
interface to the engine/transmission is     Input speed              2300 rpm
necessary.                                  No of gears              4 forward and 2 reverse
                                            Brakes                   Multiple wet, oil cooled
    Therefore, a 400 hp powerpack (engine   PTO                      60 kW
and transmission) was specially designed    Torque convertor         TC-700
and developed to meet this requirement
of the MUNTRA project.

     This Electronically Controlled Power
Pack (ECPP) can be directly controlled

18 March-April 2018 							                                          Unmanned Ground Vehicles: Present and Future
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