Segway Inc.'s Human Transporter (HT) models

Segway RMP (RMP Series) Titanium and Black-color Robotic Mobility Platforms (OS 12.1-14.1)
Released 10/04

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Back when I was a postdoc in California, on a sunny afternoon walking across the Quad at Stanford University it was not unusual to see some primitive R2D2-like robot struggling to get around with smiling students and their laptops closely in tow.

Thus it's not surprising to me that in the 2003-2004 time period, scientists who work in robotics began buying HTs and converting them to other sorts of robots (the Segway HT is itself already a robot, of course). Engineers at LLC would work closely with these customers to help them succeed. Eventually the company decided to market pre-made mobility platforms (the robot version of "feet") so engineers, scientists, professors and students around the world could add their robot to the top of a Segway HT. Currently there are four different versions of the RMP that are derived from the p Series, the i Series and even a monster RMP with wheels from the XT. Interestingly, only two of the four models have the capacity to balance with the dynamic stabilization technology Segway LLC is known for. The simplest (RMP 50) model and the monster (RMP 400) model have three and four wheels respectively and hence don't need the two wheel balancing feature.

The Segway LLC website's RMP product description:
The Segway Robotic Mobility Platform (RMP) takes the performance and engineering prowess demonstrated in the Segway Human Transporter (HT) and makes it available in a durable package for robotics applications. The Segway RMP is an extremely reliable and customizable transportation platform that is suitable for moving heavy payloads in tight spaces over a variety of terrain. The Segway RMP product line uses the same components that enabled a Segway HT rider to travel more than 4,000 miles across the United States. These components were designed and tested to be highly reliable and durable -all while maintaining a reasonable cost. Each Segway RMP model is electric and emits only a slight harmonic hum when the drive motors are active. It also has an onboard charging system and is controlled via a simple USB or CAN serial bus interface. Custom interfaces are also available. The Segway RMP base is well sized to augment or replace human power in a variety of applications. Its motors are capable of producing 2 HP continuously and can peak at 4-5 HP as needed-powerful enough to carry a human-sized payload. Segway RMP models are available in a variety or battery and tire/wheel combinations and offer a range of up to 15 miles / 24 km and payload capability of up to 400 lbs / 181 kg. The Segway RMP runs on one to four NiMH or li-ion battery packs. Each Segway RMP can be powered by any electrical energy source provided it produces 52 volts. In fact, the Segway RMP may be outŪtted with a compact gas generator to charge the batteries while in use. Segway RMPs have a propulsion base that is found in other Segway products currently in the marketplace. Some models include support frames for custom sensing devices and computing hardware, casters for statically stable operation, or connection points for attaching one Segway RMP to another. Modular capability within the Segway RMP product line enables a small number of units to be reconfigured as needs change. The Segway Robotic Mobility Platform is available for delivery to commercial customers now.

RMP Models and Specifications

Segway RMP 50
RMP 50The Segway RMP 50 is a lower-cost ($7000), statically stable platform for use on flat surfaces and at slower speeds. It’s great for lower power applications such as use in teaching labs or for indoor surveillance.

Speed 0 - 4 mph / 0 - 6 kph   Stabilization Static

Range 5 - 6 miles / 8 - 10 km   Weight 70 lbs / 32 kg

Dimensions 22 x 28 x 17 in / 56 x 71 x 43 cm

Segway RMP 100
RMP 100The Segway RMP 100 ($16,000) is derived from the p Series line of Segway HTs. It’s smaller, lighter, and narrower—a good fit for indoor applications where maneuverability, a tight turning radius and 100-150 lbs / 45-68 kg capacity is needed. Dynamic stabilization helps the Segway RMP 100 climb over obstacles that would normally impede the performance of a caster-based platform.

Speed 0 - 6 mph / 1 - 10 kph   Stabilization Dynamic

Range 8 - 12 miles / 13 - 19 km   Weight 125 lbs /57 kg

Dimensions 24 x 24 x 27 in / 61 x 61 x 69 cm

Segway RMP 200
RMP 200 The Segway RMP 200 ($18,000) was the frst model manufactured and is being used by more than 20 universities to develop a variety of autonomy technologies including mapping, leader-follower pairs, obstacle avoidance and path planning. Like the Segway HT i Series models, the Segway RMP 200 utilizes dynamic stabilization to balance and overcome obstacles, can carry up to 200 lbs / 91 kg and can travel at speeds up to 8 mph w/ 13 kmh. For an additional $2,000 it's also available with two ATV tires like those used on the RMP 400.

Speed 0 - 10 mph / 1 - 16 kph   Stabilization Dynamic

Range 12 - 15 miles / 19 - 24 km   Weight 140 lbs / 64 kg

Dimensions 25 x 29.5 x 24 in / 64 x 75 x 61 cm

Segway RMP 400
RMP 400The Segway RMP 400 ($40,000) is the most powerful within its breed. Powered by 4 lithium-ion battery packs and rolling on four ATV tires, the Segway RMP 400 is workhorse capable of carrying up to 400 lbs while maintaining impressive tractive ability over the most challenging terrain.

Speed 0 - 18 mph / 0 - 29 kph   Stabilization Static

Range 10 - 15 miles / 16 - 24 km   Weight 240 lbs / 109 kg

Dimensions 30 x 44 x 24 in / 76 x 112 x 61 cm

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