Ifb (

%

Current , mA)

FeedForward _Term (mV)

Proportional Gain (mV/mA)

Proportional _Term (mV)

PWM_Command (%)(0-100%)

Isetpoint(Current , mA)

Integral _Gain (ohms/ohms)

100%

PWM DutyCycle (%)

PWM Offset(%)(0-100%)

z-1

Derivative Gain (mV/mA/10ms)

Derivative_Term (mV)

z-1Previous

Ierror

z-1

Rerror(Resistance, ohms)

Rerror_max (Resistance, ohms)

Rerror_min (Resistance, ohms)

Kf_max (Resistance, ohms)

MIN

Coil Voltage Desired

lerror (Current , mA)

Supply_Voltage (Volts, V)

Kf_min (Resistance, ohms)

Kf (Resistance, ohms)Restimate

(Resistance, ohms)

100%

0

INCOVA®

hydraulic control SyStem for excavatorSCo

ntr

ol f

oC

us

ed

• t

eC

hn

olo

gy d

riv

en

inc

ova

®

Material/Personnel Handling Equipment

Earthmoving Equipment

Benefits/features of incova®

Improved efficiency means more work with less fuel

• Perform the same amount of work with 25% less fuel• Generate significantly less heat by reducing valve losses• Optimize total vehicle efficiency by completely integrating the

engine and hydraulic control system• Maximize the vehicle efficiency by utilizing HUSCO’s proprietary

energy recovery system which stores energy from boom gravity lower for reuse later

• Predictive engine loading increases overall vehicle efficiency and lower emissions

Increased productivity means more work in less time

• Reduce work cycle times by up to 10%• Increase function speeds by utilizing independent meter-in/ meter-

out and regenerative metering modes• Maximize the vehicle capabilities by selecting a custom operating

mode to match your application - for example, select the craning mode to lay more pipe.

Increase uptime to maximize the amount of work per vehicle

• Diagnostic information provided via CAN communication to cab display or access data remotely

• Improved fleet management – vehicle information, such as cylinder loads and stresses, oil temperatures, duty cycles can be gathered to enable cost-effective preventative maintenance.

• Reduce downtime – with proven, interchangeable components, vehicle issues can be resolved quickly with minimal service part inventories

Superior controllability enables operator to be more productive

• Excellent fine metering allow operators to have precise control of the vehicle

• Elimination of load holding valves and associated valve coordination problems

• Improved dynamic response• Enables coordinated motion such as X-Y movements and flat

bottom trenching

INCOVA® Applications

Excavators

Tractor Loader Backhoes

Wheel Loaders

Telehandlers

Cranes

Aerial Work Platforms

incova® is an innovative departure from traditional hydraulic spool valve control systems. Instead of being restricted by the fixed relationships of a traditional spool valve, the proprietary INCOVA® system uses four independently controlled EHPVs configured in a Wheatstone-Bridge arrangement with pressure sensor feedback and advanced controls software to continuously optimize the valve control while minimizing hydraulic losses. Independent metering and measuring the pressures deliver higher efficiency regeneration metering modes that are not possible with a spool valve today. INCOVA® provides smooth acceleration, adaptive deceleration and predictable multi-functioning metering without the hydraulic heat losses associated with traditional spool valves. incova® also predictively communicates hydraulic power demands to the engine before the load increases. This allows for proactive engine controls to improve the machine’s load response allowing for increased efficiency and improved emissions.

By mounting the valves directly on the work function, the quantity of hoses, tubes and fittings is reduced significantly providing reductions in mechanical failures, hydraulic leaks and downtime.

Plus, the low leak capabilities of the EHPV® allow the uniquely distributed INCOVA® system to deliver both the control valve and hose burst protection; eliminating the need for load holding valves which significantly improves efficiency.

incova® is more than an incremental improvement to today’s hydraulic control systems; it is a quantum leap forward. For example, INCOVA® significantly reduces the cost of ownership for an excavator by reducing fuel consumption by 25%, improving productivity by 10% and incorporating the capability of remote diagnostics to improve uptime. INCOVA® will also be a key part of an OEM Tier 4 emissions strategy. Nothing comes close to incova® valve technology – setting a new standard for hydraulic controls.

INCOVA® Technology: An advanced system designed for efficiency

HUSCO’s breakthrough INCOVA® (Intelligent Control Valve) technology is an innovative departure from traditional hydraulic spool valve control systems. By eliminating the limitations of traditional valve technology, INCOVA® ushers in a new era in hydraulic control systems. Never before has a technology allowed an equipment OEM to improve vehicle productivity, efficiency, controllability, reliability, safety and flexibility so completely – and so cost-effectively.

A New Era in Hydraulic Control Systems

Material/Personnel Handling Equipment

Earthmoving Equipment

incova® is an innovative departure from traditional hydraulic spool valve control systems. Instead of being restricted by the fixed relationships of a traditional spool valve, the proprietary INCOVA® system uses four independently controlled EHPVs configured in a Wheatstone-Bridge arrangement with pressure sensor feedback and advanced controls software to continuously optimize the valve control while minimizing hydraulic losses. Independent metering and measuring the pressures deliver higher efficiency regeneration metering modes that are not possible with a spool valve today. INCOVA® provides smooth acceleration, adaptive deceleration and predictable multi-functioning metering without the hydraulic heat losses associated with traditional spool valves. incova® also predictively communicates hydraulic power demands to the engine before the load increases. This allows for proactive engine controls to improve the machine’s load response allowing for increased efficiency and improved emissions.

By mounting the valves directly on the work function, the quantity of hoses, tubes and fittings is reduced significantly providing reductions in mechanical failures, hydraulic leaks and downtime.

Plus, the low leak capabilities of the EHPV® allow the uniquely distributed INCOVA® system to deliver both the control valve and hose burst protection; eliminating the need for load holding valves which significantly improves efficiency.

incova® is more than an incremental improvement to today’s hydraulic control systems; it is a quantum leap forward. For example, INCOVA® significantly reduces the cost of ownership for an excavator by reducing fuel consumption by 25%, improving productivity by 10% and incorporating the capability of remote diagnostics to improve uptime. INCOVA® will also be a key part of an OEM Tier 4 emissions strategy. Nothing comes close to incova® valve technology – setting a new standard for hydraulic controls.

INCOVA® Technology: An advanced system designed for efficiency

Distributed Supply

Distributed Return

Pump

EHPVEHPV

EHPVHVC

EHPV

HUSCO’s breakthrough INCOVA® (Intelligent Control Valve) technology is an innovative departure from traditional hydraulic spool valve control systems. By eliminating the limitations of traditional valve technology, INCOVA® ushers in a new era in hydraulic control systems. Never before has a technology allowed an equipment OEM to improve vehicle productivity, efficiency, controllability, reliability, safety and flexibility so completely – and so cost-effectively.

A New Era in Hydraulic Control Systems

Co

ntr

ol f

oC

us

ed

teC

hn

olo

gy d

riv

en

© 2007 HUSCO International

World HeadquartersHUSCO International, Inc. 2239 Pewaukee Road Waukesha, WI 53188 Phone: 1-262-513-4200 Fax: 1-262-513-4240

European HeadquartersHUSCO International, Ltd. 6 Rivington Road Whitehouse Industrial Estate Runcorn, Cheshire, England WA7 3DT Phone: (44)-1928-701888 Fax: (44)-1928-710813

Pacific Rim HeadquartersHUSCO Kayaba Hydraulics (Shanghai) Ltd. No. 235 Jiangtian Road East Song Jiang Industrial Zone Shanghai, 201600 P.R. China Phone: (86)-21-5774-6468 Fax: (86)-21-3774-0186

India HeadquartersHUSCO Hydraulics Private Ltd. Plot A4 - Talegaon Floricul-ture Ind. Estate - MIDC Village - Navlakh Umbre, Talegaon, Puna 410507, India Phone: (91)-211-4305327

Automotive OperationsHUSCO International, Inc. 1116 Universal Boulevard Whitewater, WI 53190 Phone: 1-262-513-4260 Fax: 1-262-513-4514

HUSCO BrazilRua Jaragua 397 sala 702 Porto Alegre RS 90-450-140 Brazil Phone: (55)-51-3388-4367 Fax: (55)-51-3321-4291

WEBSITE: www.huscointl.com EMAIL: incova@huscointl.com