Motors & Drives Information

Used with brushless rotary servomotors, MicroFlex resolver input model utilizes DSP technology and resolver-to-digital-converter IC. Performance is optimized via software-configurable anti-resonance filters, and space vector modulation techniques control IGBT power devices. Able to operate in torque or velocity control mode, drive uses sinusoidal, resolver-based commutation and features simulated encoder output. Unit is offered with 3, 6, and 9 A continuous power ratings.

o cost-effective performance upgrade for existing motor installations

o all-digital DSP-based drive technology facilitates optimal set-up

Fort Smith, AR, June 27, 2005 --- Baldor has extended its MicroFlex family of low-cost digital servo drives with the launch of a new model for use with brushless rotary AC servomotors utilizing resolver feedback. The drive provides users with a cost-effective means of increasing the speed and smoothness of existing automation through the application of advanced digital control technology, without having to replace the servomotor. It is also likely to prove popular with OEMs and machine builders designing servo-based systems for use in challenging environments, as resolvers are generally considered more mechanically and electrically robust than encoders, especially at elevated temperatures.

MicroFlex servo drives are all-digital control solutions, using DSP (digital signal processor) technology to maximize performance and minimize cost. The new resolver input model uses a resolver-to-digital-converter (RDC) IC to convert the analog motor feedback signal into digital data immediately prior to processing. The drive's DSP enables users to optimize system performance via software-configurable anti-resonance filters. Instead of employing 'soft' servo loop gains to eliminate noise and vibration by de-tuning the system - which is a compromise often faced when retrofitting a drive to an existing installation - users can set up the filters to optimize dynamic performance and minimize settling times.

# posted by Medical Information : 11:43 PM