Project Robotics - March 2009 - (Page 13) sponsor advertisement toshiBa Motor Controller and driVer iCs aVailaBle at digi-key from digi-key, Toshiba has developed a motor controller and driver iCs with its leading-edge BiCMos and BiCd (Bipolar + CMos + dMos) processes. The BiCd process combines the analog advantages of bipolar devices with the digital and low-power consumption benefits of MosfeTs as well as the highpower capabilities of dMos devices. The family consists of brushed dC motor drivers, brushless dC motor controller/ drivers, stepping motor drivers, and combination motor drivers. These four types of motor controller and driver iCs are available for a broad range of applications. CLiCk here for additioNaL iNforMatioN hurt to do an overall simulation of the design concept. This will help ensure that, when completed, a complex system can do the job for which it was intended. siMulation realities unfortunately, that isn’t always the case. as Mentor graphics VoluMe 1 13 || nuMBer 1 design experts scott Cooper, Mike donnelly, and darrel Teegarden observe in their introduction to how to Model Mechatronic systems using Vhdl-aMs1, “although use of computer models is a key for successful design of complex systems, [we] have observed that engineers are often reluctant to invest the time and energy required to develop such models.” They believe there are two reasons for this situation. for one, until relatively recently there were no standardized modeling formats available for such work. for another, there is a preconceived notion on the part of most designers that simulation technologies are difficult to use productively, and that building models is even more difficult. The lack of a standardized modeling format was solved by an ieee standard, the Vhdl-aMs hardware description language. described as rich-featured and powerful, it lets users develop useful models and create meaningful simulations without having to become experts in the language. Then too, it promotes model reuse by allowing users to store models, easily adapt them, and run them on various compatible simulators. as to overcoming preconceived notions, it’s hoped that the following example based on material from the Cooper-donnellyTeegarden work previously cited will help convince designers that modeling is not too difficult. Vhdl-aMs Modeling a Vhdl-aMs model consists of two different types of program statements: an entity statement and at least one architecture statement. The entity statement defines the interfaces of the device being modeled in so far as they are relative to the simulation. Through the interface, the model can communicate with other models via its ports (pins). any external 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;212402670;32989198;m?http://dkc1.digikey.com/us/en/ph/Toshiba/Driver.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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