Project Robotics - March 2009 - (Page 18) sponsor advertisement portesCap 20daM linear aCtuators now aVailaBle at digi-key from digi-key, portescap’s 20daM series digital linear actuators are lowcost motion control units that provide an industry-leading linear force up to 108 oz. (30n) and linear step resolution of .001”, .002”, and .004”. The actuators also have 2.5 watts of power for fast response times and precise positioning capability. high linear force and resolution, combined with impressive positioning attributes, makes the portescap 20daM series an ideal linear actuator solution for medical equipment applications such as pumps, pipettes and scanners, instrumentation, hVaC, and robotics. CLiCk here for additioNaL iNforMatioN of the system by making several simplifying assumptions. physical model parameters were identified and mathematical equations were derived by applying the laws of nature to the physical model. Computer simulations allowed the team to explore and understand the equations of motion by analyzing the system in different configurations. Modeling, analyzing and simulating components of the system allowed the team to correctly choose and size components as well as test control schemes without resorting to a trial-and-error approach. prototyping the lot-V after a careful analysis of the simulation results, it was decided that two variations of the platform would be created. The first, loT-V, was a small, sensor-rich prototype that was used to explore and evaluate different sensor solutions and control algorithms. its size allowed testing and exploration with fewer identify, Model, and design The first step in development began with the engineering system investigation process, which is the process used to understand how a system actually works and how it can be improved. This process started with the development of a physical model VoluMe 1 18 || nuMBer 1 safety concerns. it was built using off-the-shelf parts and controlled with an inexpensive ni-daQ pCMCia Card tethered to the robot. The second, hoT-V, was scaled specifically to transport an adult human. it incorporated the lessons learned from the loT-V prototype, in both mechanical and electrical design, to be as safe and modular as possible. The hoT-V is controlled with the ni Compactrio control platform. The Compactrio provides a rugged, high-performance real-time computation package coupled with high-speed, electrically isolated i/o, making it an ideal self-contained control system. Both prototypes utilized ni labVieW and the labVieW simulation Module for algorithm development and deployment. labVieW was absolutely essential to the success of the project due to the ease and speed with which the software could be reconfigured and shared between platforms. algorithms Contents Viewpoint the Cutting edge for haptiC researCh Modeling CoMplex eleCtroMeChaniCal systeMs deVeloping a two-wheeled self-BalanCing transport platforM home page product training Module online ordering suppliers Catalog http://ad.doubleclick.net/clk;212402702;32989198;i?http://dkc1.digikey.com/us/en/ph/Portescap/20dam.html http://ad.doubleclick.net/clk;212362954;32989198;w?http://www.digikey.com http://ad.doubleclick.net/clk;212362954;32989198;w?http://www.digikey.com http://ad.doubleclick.net/clk;212363051;32989198;l?http://digikey.com/PTM/PTMMaster.page?site=us&lang=en http://ad.doubleclick.net/clk;212363300;32989198;i?http://ordering.digikey.com/ordering/addpart.aspx?site=US&source=search http://ad.doubleclick.net/clk;212363091;32989198;p?http://digikey.com/Suppliers/SupplierIndex.page?site=us&lang=en http://ad.doubleclick.net/clk;212363309;32989198;r?http://dkc1.digikey.com/us/en/pdf/Current.html
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