3 research outputs found

    Robust Immersive Telepresence and Mobile Telemanipulation: NimbRo wins ANA Avatar XPRIZE Finals

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    Robotic avatar systems promise to bridge distances and reduce the need for travel. We present the updated NimbRo avatar system, winner of the $5M grand prize at the international ANA Avatar XPRIZE competition, which required participants to build intuitive and immersive robotic telepresence systems that could be operated by briefly trained operators. We describe key improvements for the finals, compared to the system used in the semifinals: To operate without a power- and communications tether, we integrated a battery and a robust redundant wireless communication system. Video and audio data are compressed using low-latency HEVC and Opus codecs. We propose a new locomotion control device with tunable resistance force. To increase flexibility, the robot's upper-body height can be adjusted by the operator. We describe essential monitoring and robustness tools which enabled the success at the competition. Finally, we analyze our performance at the competition finals and discuss lessons learned.Comment: M. Schwarz and C. Lenz contributed equall

    Center of Mass Compliance Control of Humanoid using Disturbance Observer

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ) -- ์„œ์šธ๋Œ€ํ•™๊ต๋Œ€ํ•™์› : ์œตํ•ฉ๊ณผํ•™๊ธฐ์ˆ ๋Œ€ํ•™์› ์ง€๋Šฅ์ •๋ณด์œตํ•ฉํ•™๊ณผ, 2023. 2. ๋ฐ•์žฌํฅ.๋กœ๋ด‡์˜ ์ž‘์—… ํ™˜๊ฒฝ์ด ์ธ๊ฐ„์˜ ์ผ์ƒ๊ณผ ์ ์  ๊ฐ€๊นŒ์›Œ์ง์— ๋”ฐ๋ผ, ์ธ๊ฐ„์˜ ์•ˆ์ „์„ ๋ณด์žฅํ•  ์ˆ˜ ์žˆ๋Š” ์œ ์—ฐ ๋™์ž‘ ์ œ์–ด ๋ฐฉ์‹๋“ค์ด ์—ฐ๊ตฌ๋˜์–ด ์™”๋‹ค ํŠนํžˆ ํœด๋จธ๋…ธ์ด๋“œ ๋กœ๋ด‡์— ์žˆ์–ด์„œ๋Š”, ์ธ๊ฐ„์˜ ์•ˆ์ „์„ ๋ณด์žฅํ•˜๊ธฐ ์œ„ํ•ด ์œ ์—ฐ ๋™์ž‘์„ ์ƒ์„ฑํ•จ์— ๋”ํ•ด ์œ ์—ฐ ๋™์ž‘ ๊ณผ์ •์—์„œ ๋กœ๋ด‡ ๋˜ํ•œ ์•ˆ์ •์ ์œผ๋กœ ๊ท ํ˜•์„ ์œ ์ง€ํ•  ์ˆ˜ ์žˆ์–ด์•ผ ํ•œ๋‹ค. ์ถ”๊ฐ€๋กœ ํœด๋จธ๋…ธ์ด๋“œ ๋กœ๋ด‡์ด ์ˆ˜ํ–‰ ์ค‘์ธ ์ž‘์—… ํ˜น์€ ํ™˜๊ฒฝ์— ์ ํ•ฉํ•  ์ˆ˜ ์žˆ๋„๋ก ๋…๋ฆฝ์ ์œผ๋กœ ์œ ์—ฐ ๋™์ž‘์„ ์ƒ์„ฑํ•˜๊ณ  ์ง๊ด€์ ์œผ๋กœ ์ด๋ฅผ ์ œํ•œํ•  ์ˆ˜ ์žˆ์–ด์•ผ ํ•œ๋‹ค. ๋ณธ ๋…ผ๋ฌธ์—์„œ๋Š” ํ˜‘๋™ ์ž‘์—…์„ ์œ„ํ•œ ํœด๋จธ๋…ธ์ด๋“œ ๋กœ๋ด‡์˜ ๋ฌด๊ฒŒ ์ค‘์‹ฌ ์œ ์—ฐ ๋™์ž‘ ์ œ์–ด ์•Œ๊ณ ๋ฆฌ ์ฆ˜์„ ์ œ์•ˆํ•œ๋‹ค. ์ œ์•ˆํ•˜๋Š” ์•Œ๊ณ ๋ฆฌ์ฆ˜์€ ์ƒํƒœ ๊ด€์ธก๊ธฐ์™€ ์™ธ๋ž€ ์–‘์„ฑ ํ”ผ๋“œ๋ฐฑ์— ๊ธฐ๋ฐ˜ํ•œ๋‹ค. ํœด๋จธ๋…ธ์ด๋“œ ๋กœ๋ด‡์˜ ๋ฌด๊ฒŒ ์ค‘์‹ฌ ์ œ์–ด ์„ฑ๋Šฅ ๋ชจ๋ธ์— ๊ธฐ๋ฐ˜ํ•˜์—ฌ ์ƒํƒœ ๊ด€์ธก๊ธฐ๋ฅผ ์„ค๊ณ„ํ•˜์˜€๊ณ  ์ด๋ฅผ ํ†ตํ•ด ๋ฌด๊ฒŒ ์ค‘์‹ฌ์— ๋ฐœ์ƒํ•œ ์™ธ๋ž€์„ ๊ด€์ธกํ•œ๋‹ค. ๊ด€์ธก๋œ ์™ธ๋ž€์€ ์ฐธ์กฐ ๋ฌด๊ฒŒ ์ค‘์‹ฌ ๊ฒฝ๋กœ์— ์–‘์„ฑ ํ”ผ๋“œ๋ฐฑ๋˜์–ด ํœด๋จธ๋…ธ์ด๋“œ ๋กœ๋ด‡์˜ ์œ ์—ฐ ๋™์ž‘์„ ์ƒ์„ฑํ•œ๋‹ค. ์ด๋ฅผ ํ†ตํ•ด ๋ฌด๊ฒŒ ์ค‘์‹ฌ ์ขŒํ‘œ๊ณ„์—์„œ ์ถ• ๋ณ„๋กœ ๋…๋ฆฝ์ ์ธ ์œ ์—ฐ์„ฑ์„ ๊ตฌํ˜„ํ•˜๊ณ  ๊ตฌํ˜„๋œ ์œ ์—ฐ์„ฑ์„ ํ†ตํ•ด ์™ธ๋ž€์— ๋Œ€์‘ํ•˜์—ฌ ๋กœ๋ด‡์ด ๊ท ํ˜•์„ ์œ ์ง€ํ•  ์ˆ˜ ์žˆ๋‹ค. ์ œ์•ˆํ•˜๋Š” ์•Œ๊ณ  ๋ฆฌ์ฆ˜์˜ ์„ฑ๋Šฅ์„ ํœด๋จธ๋…ธ์ด๋“œ ๋กœ๋ด‡ DYROS-JET ๋ฅผ ํ™œ์šฉํ•œ ๋™์—ญํ•™ ์‹œ๋ฎฌ๋ ˆ์ด์…˜๊ณผ ์‹ค์ œ ๋กœ๋ด‡ ์‹คํ—˜์„ ํ†ตํ•ด ๊ฒ€์ฆํ•˜์˜€๋‹ค.As the task environment of robots became closer to human , compliant motion control methods that can ensure human safety have been studied. In particular, for the humanoid robot, compliant motion control must also be able to stably maintain the balance In addition, compliant motion control should be able to independently create and intuitively limit the compliance so that compliant motion control can be suitable for the task of humanoid. In this paper, a center of mass (CoM) compliance control algorithm of humanoid robots for collaborative works is proposed. The proposed algorithm is based on the state observer and positive feedback of observed disturbance. With the state observer based on humanoid CoM control performance model, disturbance in each direction can be observed. The positive feedback of disturbances to the reference CoM trajectory enables compliant motion. The main contributions of this algorithm are achieving compliance independently in each axis and maintaining balance against external force. Through dynamic simulations and real robot experiments of Humanoid robot DYROS-JET, the performance of the proposed method was demonstrated.์ œ 1 ์žฅ ์„œ ๋ก  1 ์ œ 1 ์ ˆ ์—ฐ๊ตฌ ๋ฐฐ๊ฒฝ ๋ฐ ๋™๊ธฐ 1 ์ œ 2 ์ ˆ ๊ด€๋ จ ์—ฐ๊ตฌ 1 ์ œ 3 ์ ˆ ์—ฐ๊ตฌ์˜ ๋‚ด์šฉ 2 ์ œ 4 ์ ˆ ๋…ผ๋ฌธ์˜ ๊ตฌ์„ฑ 3 ์ œ 2 ์žฅ CoM ์œ ์—ฐ ๋™์ž‘ ์ œ์–ด๊ธฐ 4 ์ œ 1 ์ ˆ CoM ์ œ์–ด ์„ฑ๋Šฅ ๋ชจ๋ธ 4 ์ œ 2 ์ ˆ ์ œ์–ด ํ”„๋ ˆ์ž„์›Œํฌ์˜ ํ๋ฆ„๋„ ์†Œ๊ฐœ 5 ์ œ 3 ์ ˆ ์ œ์–ด ํ”„๋ ˆ์ž„์›Œํฌ์˜ ์ˆ˜ํ•™์  ๋ชจ๋ธ๋ง 6 ์ œ 3 ์žฅ ๋™์—ญํ•™ ์‹œ๋ฎฌ๋ ˆ์ด์…˜ 9 ์ œ 1 ์ ˆ ๋กœ๋ด‡ ๋ฐ ์‹œ๋ฎฌ๋ ˆ์ด์…˜ ํ™˜๊ฒฝ ์„ค๋ช… 9 ์ œ 2 ์ ˆ CoM ์œ„์น˜ ์ธก์ • 11 ์ œ 3 ์ ˆ ์œ ์—ฐ์„ฑ ๋…๋ฆฝ ์ œ์–ด ์‹œ๋ฎฌ๋ ˆ์ด์…˜ 12 ์ œ 4 ์ ˆ ์ถฉ๋Œ ์™ธ๋ž€ ์‹œ ์•ˆ์ • ๊ท ํ˜• ์ œ์–ด ์‹œ๋ฎฌ๋ ˆ์ด์…˜ 14 ์ œ 4 ์žฅ ์‹ค ํ—˜ 19 ์ œ 1 ์ ˆ ๋กœ๋ด‡ DYROS-JET ์„ค๋ช… 19 ์ œ 2 ์ ˆ ์ถฉ๋Œ ์™ธ๋ž€ ์‹œ ์•ˆ์ • ๊ท ํ˜• ์ œ์–ด ์‹คํ—˜ 22 ์ œ 3 ์ ˆ ์œ„์น˜ ์ถ”์ข… ๋ง‰ํž˜ ์™ธ๋ž€ ์‹คํ—˜ 28 ์ œ 5 ์žฅ ๊ฒฐ ๋ก  33 ์ฐธ๊ณ ๋ฌธํ—Œ 35 Abstract 39์„

    Battery Management Systems for Firefighting Robots Using Simulation Modeling

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    The battery management systems for firefighting robots are intended to enable firefighting robots to increase operating time and to effectively extinguish a fire while managing the amount of water in a fire hose and cooperating sub-robots. To increase the operating time by managing the traction power of the firefighting robot, a novel automatic T-valve device and sub-robots were designed and added to fire hoses. The main goal of the battery management systems for firefighting robots is to lower the weight of the fire hose and to increase traction power by working with sub-robots. Whenever a firefighting robot wants to move to other spaces, the battery management systems will remove the water from fire hoses and draw the empty fire hoses by using sub-robots; thus, they are able to help the main firefighting robot to carry lighter hoses and to operate for a longer time. As a result, the battery management systems for firefighting robots enable the firefighting robot to successfully extinguish a fire for a longer time and to efficiently reach the desired destinations. The demonstration will be modeled by a computer simulation program, called AnyLogicยฎ, which can model a fire and fire areas and apply the battery management systems to robots in each fire site
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