A servo system consists of a number of elements (see diagram). One aspect of the system integration process involves matching the servo amplifier to the brushless dc motor. This may seem as simple as selecting the amplifier and motor from the same manufacturer.
BUS OF THE MONTH: Profibus-DP
Control Engineering editors— in the 14th annual process—highlighted the best products of the year, based on technological advancement, impact on the market, and service to industry.Editors selected from among thousands of products mentioned in Control Engineering and Control Engineering Online during year 2000, in nine product categories: Control components; Human-machine interface...
Hannover, Germany—Twenty-five halls will be "in play" to accommodate this year's edition of the "world's largest industrial technology trade show" on April 23-28, 2001. An extra benefit is the fairground's upgraded infrastructure, completed for Expo 2000, the World's Fair. Hannover Fair 2001 combines six "fairs" in its "Power of Industry" theme.
Irvine, Calif. —Two-way diaphragm valves from Burkert are available with intelligent On/Off , continuous proportional, or manual control. Available in either plastic or stainless steel, Types 2030/2031 are designed for automated process control and Types 3232/3233 for manual control applications requiring two-way flow control of ultra-pure, sterile, aggressive, or abrasive gases, slurrie...
KEY WORDSMotors, drives, & motion controlAC variable-speed drivesAC induction motorsAdaptive controlControversial right from their name, "sensorless" ac drives actually use current and voltage sensors to achieve motor control. Even beyond terminology, it's not obvious what sensorless ac drives can or can't do, and where they fit into the big picture.