Summary of Portescap Turbo Disc stepper motors use a unique magnetisation method for unparalleled stepper performance
This article highlights a high-performance stepper motor featuring a rare earth magnet rotor with proprietary magnetization. This design achieves smaller step angles, low moment of inertia for rapid acceleration, and minimal harmonic distortion. The independent magnetic circuit ensures accurate microstepping, while short SiFe laminations reduce iron losses, enabling high speeds up to 10,000 steps per second with superior torque-to-volume ratios.
Parts used in the Stepper Motor:
- Rare earth magnet
- Proprietary magnetisation method
- Low detent torque design
- Independent magnetic circuit
- SiFe laminations
(PRWEB) October 7, 2004
The rotor consists of a rare earth magnet with a proprietary magnetisation method that provides much smaller step angles than conventional two-phase permanent magnet stepper motors. The unique rotor design provides a very low moment of inertia for outstanding acceleration and dynamic behaviour. Coupled with high peak speeds, this means that any incremental movement is carried out in the shortest possible time, says Dave Beckstoffer, Product Manager. Low inertia also results in high start/stop frequencies, which can solve certain motion challenges without applying a ramp.
The variation in holding torque is reduced because these motors are designed with a low detent torque. The motors exhibit minimal harmonic distortion, with excellent static and dynamic accuracy for any position under any load or speed conditions. An independent magnetic circuit eliminates the coupling between phases ensuring accurate angular resolution in microstep mode. The short magnetic circuit using a small amount of SiFe laminations, significantly reduces iron losses for obtaining more torque at high step rates (up to 10000 step/s). The result is high peak torques, high speeds and high power/volume ratios.
About Danaher Motion
Danaher Motion is a leading global supplier of motion control products, systems and services that improve the efficiency of complex manufacturing operations. Our product innovations have been revolutionising the motion control industry for over 60 years through trusted brand names including Kollmorgen, Pacific Scientific, Thomson, Dover and Portescap. Danaher Motion is a strategic business platform of the Danaher Corporation (NYSE:DHR), a manufacturer of process and environmental controls, tools and industrial components. For more information visit us online at http://www.danahermotion.com
Sales and literature requests :
Portescap
A company of Danaher Motion
Rue Jardinière 157
Case postale
CH-2301 La Chaux-de-Fonds
Switzerland
Office: +41 (0) 32 925 64 00
Fax: +41 (0) 32 925 65 90
- How does the rotor design affect acceleration?
The unique rotor design provides a very low moment of inertia which results in outstanding acceleration and dynamic behaviour. - Can this motor solve motion challenges without applying a ramp?
Yes, low inertia results in high start/stop frequencies that can solve certain motion challenges without applying a ramp. - What reduces the variation in holding torque?
These motors are designed with a low detent torque which reduces the variation in holding torque. - Does the motor ensure accurate angular resolution in microstep mode?
An independent magnetic circuit eliminates coupling between phases ensuring accurate angular resolution in microstep mode. - How do SiFe laminations impact performance at high step rates?
The short magnetic circuit using a small amount of SiFe laminations significantly reduces iron losses for obtaining more torque at high step rates up to 10,000 steps per second. - What benefits result from the proprietary magnetisation method?
This method provides much smaller step angles than conventional two-phase permanent magnet stepper motors. - Does the motor maintain accuracy under varying loads or speeds?
The motors exhibit excellent static and dynamic accuracy for any position under any load or speed conditions. - What is the maximum step rate mentioned for this motor?
The motor achieves high step rates up to 10,000 steps per second.
