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The Nuts & Bolts


 


 

Safety

Our primary focus is safe operations. Over many years the commercial lawn care industry has developed a robust set of safety standards for outdoor power equipment. Nomad is fully compliant with all of the relevant components of these safety standards.


Concept & Design

Nomad is a commercial mower designed to be fully autonomous; it does not require a bounding wire. Its autonomy allows it to work either as part of a crew or independently. The highly redundant sensor suite includes inertial guidance technology, LiDAR, stereo cameras, ultrasonic sensors and the latest GPS (GNSS) technology. These combined sensors ensure the mower delivers the highest productivity as it stays true to its planned path at all times - even under trees. Nomad is gas-powered and the primary traction is provided through hydraulic ground drive motors within rims fitted with conventional turf tires. For the best traction and path planning flexibility, Nomad has four-wheel drive and four-wheel steer. The steering is provided independently at each wheel that can rotate through 360° allowing a very tight turn radius. The mowing deck is a conventional three-spindle deck containing three 20.25” blades. The height of the deck is controlled by a linear actuator enabling accurate mowing height between 1.5” to 5.5”.


Cutting Width Transformation

To maximize productivity, Nomad can change mowing widths. In most mowing situations, Nomad is a four-wheel drive, four-wheel steer mower with a 60” mowing deck. However, if the most productive mowing path requires a narrower profile to get through gates or to maneuver between trees and fences, then Nomad can autonomously reduce mowing path widths down to 30”. This flexibility is unique in the industry and will provide the onboard brain an additional layer of options for maximizing productivity.



Image: Nomads 60" fat mowing width


Image: Nomads 30" skinny mowing width


Specifications

Engine

Engine : 38HP Kohler 999cc Command PRO® EFI engine

Emissions Compliance: Not Certified in CA EU Stage V EPA Phase III China Phase II Fuel Capacity: Gasoline 6 gallons HYDRAULICS

Pump : Axial piston demand pump 32GPM

Reservoir : 7 gallons

Heat Exchange: 40720 BTU’s per hour

Control: 4 custom cartridge proportioned valve manifolds

Wheel Motors: 100ccm Geroler with brake

Hydraulic Fluid: Premium Biodegradable, safe for turf use.


Additional Sensors

Fuel level, Hydraulic oil level, Oil temp into the exchanger, Oil temp out of the exchanger, Hydraulic pressure high side, Hydraulic pressure tank, Battery voltage, Alternator charge 10 synchronized, SAE Class 2 amber LED safety lights


Deck

Plate Thickness: Galvanized powder coat, 80-Grade 7-Gauge

No Deck Discharge: High lift mulching blades

Anti-Scalp Wheels: Qty 6 in deck heavy-duty caster rollers

Blade Tip Speed: 18,300+ ft/min (5,577.8 m/min)

Blade Type: 3 x 20.5 in x 0.25 in thick heat-treated steel

Height of Cut: 1.5"- 5.5"in 0.25"increments

Spindle Bearings: Maintenance-free


Mower Frame

Carrier Frame: 2" x 1" x 11 gauge

Tires: Carlisle Multi Trac C/S 18 x 8.5

Ground Speed: Transit 9 mph (15km/h) in any direction


Operational Limits

Max speed: 9 mph (15km/h)

Nominal Cutting Speed: 4.5 mph (7.25km/h)

Max Slope: 15° operational, slow transit 25°(in Fat mode)

Max Accel: 0 - 9mph 15s (0-15km/h 15s) up 15° slope

Max Cutting Width: Fat 60” (1.5m)

Min Cutting Width: Skinny 30” (0.76m)

Min Width for Access: 31.5” (clear 36” gate) Skinny mode

Time for Fat/Skinny Mode Change: 15s (max) automated change


Our Story

The entire team at Zupt (www.Zupt.com), including our engineers and surveyors, brainstormed where to take Zupt's proven intellectual property. Zupt’s background is in the integration of complex positioning, navigation and imaging technology in high-risk offshore operations working to water depths of over 2 miles for the last 15 years. Applying our knowledge from this background, Zupt knew they could build a “brain” to allow an all-terrain vehicle to work autonomously in all conditions. As a result, ZAPT, Zupt Autonomous Products and Technology, was launched.



 

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