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Articles:
The Aspects
of Servo Motor Sizing
The
vast majority of automated manufacturing systems involve the use of
sophisticated motion control systems that, besides mechanical components,
incorporate electrical components such as servo motors, amplifiers and
controllers. The
straightforward task for the motion system design engineer is to specify the
smallest motor and drive combination that can provide the torque, speed and
acceleration as required by the mechanical set up. However, all too often
engineers are familiar with the electrical details, but do lack the knowledge
how to calculate the torque requirements of the driven mechanical components.
This will lead in many cases to improperly sized motion control applications.
The impact, economically as well as technically, will be one of the topics in
this article.
Read more...
Selection Criteria for CAN
Higher Layer Protocols
Even though extremely
effective in automobiles and small applications, CAN alone is not suitable for
machine automation, since its communication between devices is limited to only 8
bytes. As a consequence, higher layer protocols such as CANopen for machine
control, DeviceNet for factory automation and J1939 for vehicles were designed
to provide a real networking technology that supports messages of unlimited
length and allow a master/slave configuration.
Read more...
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