Dr. Suresh Reddy: Engineering Leader in Vehicle Dynamics and Control Systems

Vehicle Dynamics, Control & Auxiliary Systems

Vehicle dynamics (suspension, ride quality/stability), vehicle auxiliary, control systems (traction, braking, auxiliary) and diagnostics

Diesel Electric Locomotive (generic)

GE Evolution Series Locomotive Control Architecture

Areas of experience/expertise:

• Vehicle body, wheel, axle, tire and suspension dynamics modeling

• Vehicle stability/ride quality dynamics (e.g. locomotive hunting)

• Marine propulsion systems (propellers, thrusters) and dynamics

• Wheel slip/adhesion/traction control design and stability

• Traction & dynamic braking maximization

• Blended (electric + mechanical/pneumatic) braking control

• Vehicle auxiliary systems (e.g., cooling, braking, auxiliary power)

• Vehicle Control system architecture

• Control of electric powertrains and charging systems

• Modeling and simulation of systems and control

• Model based software development

• Software In the Loop/Hardware In the Loop (HIL)/Power HIL verification/validation

Relevant Experience (at CAT, GE)

People/program/tech leadership through full development cycle:

• GE Evo series locomotive control system architecture, engine, cooling and auxiliary systems and controls

• GE locomotive vehicle system and control desktop/HIL simulations, and software automation from Matlab/Simulink

• Caterpillar Inc's firs AC electric drive for mining trucks - requirements/capability analysis between vehicle performance & electric drive systems

• Caterpillar Inc's blended braking (dynamic + hydraulic/mechanical) for 795F AC mining trucks with 1st AC electric drive

People/program leadership for several development phases:

• Caterpillar Inc's 793F AC, MT4400D AC, 794 AC and 795F AC trolley requirements/capability analysis between vehicle performance & electric drive systems

Tech leadership/execution for several development phases:

• GE's first AC locomotive and train dynamics modeling for traction and braking control & traction/adhesion maximization, and wheel slip protection through control and mechanical means

• Root cause analysis and resolution of wheel slip instability driven reliability issues

• GE's high adhesion and 1st steerable truck (bogie) dynamics modeling for hunting stability, and ride quality improvements with suspension parameter changes

• Hybrid bus and mining truck modeling, to guide GE drive system designs

• Electric frac packaging analysis for trailer loading and transportability considerations

• Marine propulsion and thruster dynamics analysis and related load profile considerations

Training/competency development:

• Adjunct Professor at Gannon University, teaching graduate students, system modeling and control systems, including vehicle dynamics/control

• Caterpillar Inc electrification learning series coordination, including vehicle electric drive traction/dynamic braking control

Key Product R&D Experience (at Caterpillar Inc, GE, Fronius USA)

GE (1st AC) AC4400CW Locomotive

GE ES44AC Locomotive (Tier 2 emissions)

GE (1st) Steerable Truck (bogie)

Hybrid Bus (generic)

Mining truck (generic)

GE High-Adhesion Truck

Engine Control Unit

Control Panels

CAT® 795F AC Mining truck

CAT® 795F AC with Trolley

CAT® 794 AC Mining Truck

CAT® 793F AC Mining Truck

CAT® MT4400D AC Mining Truck

Electric Frac trailer

(Illustrative Example only)

CAT® Marine Hybrid System

[Vehicle Powertrains, Charging Systems & related control systems covered on a separate page - link]

[Vehicle Powertrains, Charging Systems & related control systems covered on a separate page - link]

GE AC6000 Locomotive

Images of industries and products used are illustrative of Dr Reddy's research and development in various companies - they are meant to be illustrative, but not necessarily identical

Sources of images of products:

GE Locomotives - Model from katousa and Lionel; Generic diesel electric locomotive - arb.ca.gov; control architecture diagram - self prepared; GE Locomotive truck/bogie - Model from Walthers (steerable truck), renderhub.com (high ad truck); GE Locomotive engine control unit - parts sales websites (ebay, 100outlets.com); GE Locomotive Control panel - GE Evolution locomotives by Sean Graham White; Hybrid bus - wikipedia image (illustrative), Mining truck generic - 3dhorse.com; CAT mining trucks - CAT press releases and product websites; E-frac: Enquestenergysolutions.com (illustrative); Marine hybrid system - Cat press release

Relevant Patent Grants

1. US86263682 “Electric drive power response management system and method”, Caterpillar Inc, Granted: Jan 7, 2014; Filed: Sept 7, 2010

2. US6507789B1 “Gear transmission condition monitoring method and apparatus”, General Electric Company, Granted: Jan 14, 2003; Filed: July 18, 2000

3. US6208097B1 “Traction vehicle adhesion control system without ground speed measurement”, General Electric Company, Granted: Mar 27, 2001; Filed: Dec 6, 1999

4. US6449564B1 “Apparatus and method for monitoring shaft cracking or incipient pinion slip in a geared system”, General Electric Company, Granted: Sept 10, 2002; Filed: Nov 23, 1998

Individual Awards

Caterpillar Inc. – Chairman Award (2007)

GE Transportation – New Engineer of the Year (1999)

GE Transportation – 6 Sigma Project of the year (1999)

GE Corporate R&D – Special Grant Award (1997)

GE – Managerial Award - DOT Proposal (1994)

Project/Team Awards

GE Transportation - Managerial Award (Selection and deployment of Matlab/Simulink)

GE Transportation – Best Design for Six Sigma Project of the year (Locomotive Adhesion Enhancements) (1999)

GE – Managerial Award (Locomotive ride quality) (1995)

GE - Managerial Award (AC locomotive team) (1993)