Lumenier RB2205C-12 2400KV SKITZO Ceramic Bearing Motor
Thread Tools
Old Dec 16, 2012, 05:02 PM
modisc is offline
Find More Posts by modisc
modisc's Avatar
United States, MI, Ann Arbor
Joined Aug 2011
895 Posts
Originally Posted by KenSt View Post
Sensors are the norm and required in many industrial applications for brushless motors. They provide maximum torque at a stalled condition just like a brushed motor and won't switch to the next set of phases until the rotor gets there. Ideal for RC cars.

Sensorless works in RC planes because we don't care if the motor stutters SLIGHTLY at start up and the prop doesn't need maximum torque to start spinning.
Considering the encoder of a servo motor to be a superior form of "sensor", that is why servo motor is able to produce constant torque no matter what is the current speed. am i right?
modisc is offline Find More Posts by modisc
Reply With Quote
Sign up now
to remove ads between posts
Old Dec 17, 2012, 12:51 PM
Beau0090_99 is offline
Find More Posts by Beau0090_99
Registered User
Eden Prairie, MN
Joined May 2008
334 Posts
Correct, the typical industrial servo has a flat speed torque curve until you get to the "knee" where back EMF drives up the current until you run out of DC Bus. Yes, an encoder is pretty handy in commutating a brushless motor. The best thing about that is for precise position control. Unlike a stepper, you can position and hold torque to a count on an encoder.
Beau0090_99 is offline Find More Posts by Beau0090_99
Reply With Quote

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
For Sale Eflite BL-15 3600kv inrunner motors hi2nr Aircraft - Electric - Power Systems (FS/W) 0 Jul 11, 2012 11:08 AM
Sold 2 BL inrunners $25 shipped planewrecker Aircraft - Electric - Power Systems (FS/W) 2 May 10, 2012 04:23 AM
Discussion BL cogging gwinhh Electric Motor Design and Construction 5 May 08, 2012 03:46 PM
For Sale 3 BL outrunners, 1 inrunner. AXI, HET, Hyperion. price drop wrmbrnr Aircraft - Electric - Power Systems (FS/W) 0 Apr 27, 2012 05:12 PM
Discussion Underwater propulsion unit for micro BL inrunner/outrunner piito Micro and Sub-Micro Boats 0 Apr 01, 2012 04:57 PM