Jörn Malzahn, Author at Planet Robotics

Cobots on the Market: Payload vs Velocity

Jörn Malzahn — Mon, 07 Jun 2021 09:49:55 +0000

A few months ago I wrote about payload versus maximum reachability of current cobots on the market. I received plenty of feedback on this plot. Some sounded like: “Thanks for sharing. But your plot misses the information on the velocity that the robot can reach.” Hence, in this post I share with you another plot. ... Read more

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Payload vs Maximum Reach for 57 Cobots

Jörn Malzahn — Thu, 22 Oct 2020 09:39:39 +0000

In this article I share an illustration comparing the Payload vs Maximum Reach for 57 cobots. In my last post I shared some links to websites that list almost each and every cobot that the market currently has offer. Some of the websites provide comparison charts permitting the direct comparison of the listed cobots with ... Read more

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Link-Dump: Compare the Cobots on the Market

Jörn Malzahn — Thu, 15 Oct 2020 06:30:00 +0000

The so-called cobots (collaborative robots) are experiencing growing popularity. This article is to share a few links to compare the cobots on the market. I hope the collection will help newcomers to the collaborative robotic world to quickly get an overview about the brands and robots out there.

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DARPA Robotics Challenge

Jörn Malzahn — Wed, 17 Jun 2015 20:33:00 +0000

Sharing Personal Experiences from the Walkman Garage It’s been slightly more than a week now since the DARPA Robotics Challenge (DRC) Finals. Time enough to process and reflect the experiences made during a busy week at Fairplex. Some of them I wish to share here very quick. I remember well the DARPA Grand Challenges back ... Read more

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Elastic Robot Links: Curse or Blessing? (Part 2)

Jörn Malzahn — Fri, 30 Aug 2013 16:57:00 +0000

In first place, elasticity in the links of robot arms prolongs settling times and deteriorates the positioning accuracy. However, the feasibility of fast and precise end effector positioning for an elastic link arm has been exemplified with ball catching experiments[1] Malzahn, Jörn, Anh Son Phung, and Torsten Bertram. “A Multi-Link-Flexible Robot Arm Catching Thrown Balls.” 7th ... Read more

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Elastic Robot Links: Curse or Blessing?

Jörn Malzahn — Mon, 04 Mar 2013 20:56:30 +0000

It is a demanding challenge to avoid unwanted structural elasticity during the design of lightweight robot mechanisms. Link elasticity aggravates the precise position control of the robot due to configuration dependent static deflections and prolong settling times because of long lasting oscillations. Apart from robotics we find similar design criteria in e. g. in fire-rescue ... Read more

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