Difference between revisions of "ESC"
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__TOC__ | __TOC__ | ||
ESC | =Introduction= | ||
While most standard | |||
ESC, '''E'''lectric '''S'''peed '''C'''ontrollers, are required for controlling electric motors | |||
While most standard ESC's will work well with fixedwing, rotorcraft have higher requirements | |||
Positive features for rotorcraft: | Positive features for rotorcraft: | ||
* | |||
* | * Faster response to input signal | ||
* | * Higher torque | ||
* | * Accept higher or other input signal (higher PWM input or I2C) | ||
* Less noise | |||
Standard ESC can be used, but with a little work and an alternative firmware they will work better. | Standard ESC can be used, but with a little work and an alternative firmware they will work better. | ||
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= AVR (ATmega) based ESC = | = AVR (ATmega) based ESC = | ||
Simon Kirby develops an alternative firmware for ATmega based brushless motor controller, written in assembly. | Simon Kirby develops an alternative firmware for ATmega based brushless motor controller, written in assembly. | ||
Features: | Features: | ||
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* Forward and reverse commutation supported, including RC-car style reverse-neutral-forward PWM ranges, with optional braking | * Forward and reverse commutation supported, including RC-car style reverse-neutral-forward PWM ranges, with optional braking | ||
==Programmer== | |||
Any ISP programmer will do the job, just some popular: <br/> | Any ISP programmer will do the job, just some popular: <br/> | ||
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[http://shop.myavr.de/Programmer%20und%20Bridges/mySmartUSB%20light.htm?sp=article.sp.php&artID=200006 mySmartUSB light] Noob friendly software. | [http://shop.myavr.de/Programmer%20und%20Bridges/mySmartUSB%20light.htm?sp=article.sp.php&artID=200006 mySmartUSB light] Noob friendly software. | ||
==Related links== | |||
[http://wiki.openpilot.org/display/Doc/RapidESC+Database Hardware compatibility table (Openpilot)]<br/> | [http://wiki.openpilot.org/display/Doc/RapidESC+Database Hardware compatibility table (Openpilot)]<br/> | ||
[https://docs.google.com/spreadsheet/ccc?key=0AhR02IDNb7_MdEhfVjk3MkRHVzhKdjU1YzdBQkZZRlE#gid=0 Hardware compatibility table (google docs)] <br/> | [https://docs.google.com/spreadsheet/ccc?key=0AhR02IDNb7_MdEhfVjk3MkRHVzhKdjU1YzdBQkZZRlE#gid=0 Hardware compatibility table (google docs)] <br/> | ||
[https://github.com/sim-/tgy sim-/tgy] git repository. | [https://github.com/sim-/tgy sim-/tgy] git repository. | ||
= SiLabs based ESC = | = SiLabs based ESC = | ||
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Features: | Features: | ||
* Can be configured for helicopter MAIN motor or TAIL motor operation. Or as MULTIcopter motor operation. | * Can be configured for helicopter MAIN motor or TAIL motor operation. Or as MULTIcopter motor operation. | ||
* Main motor operation has governor functionality and multicopter motor operation has closed loop functionality. | * Main motor operation has governor functionality and multicopter motor operation has closed loop functionality. | ||
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* Many parameters can be programmed, either from PC applications for setup and configuration, or from the TX. | * Many parameters can be programmed, either from PC applications for setup and configuration, or from the TX. | ||
* Supports 1kHz, 2kHz, 4kHz, 8kHz or 12kHz positive or negative pwm as input signal, as well as regular 1-2ms PPM signal. | * Supports 1kHz, 2kHz, 4kHz, 8kHz or 12kHz positive or negative pwm as input signal, as well as regular 1-2ms PPM signal. | ||
The easiest way is to program and set up the esc with the BLHeli setup tool (no surce available :( ). | The easiest way is to program and set up the esc with the BLHeli setup tool (no surce available :( ). | ||
==Programmer== | |||
* [http://www.olliw.eu/2012/owsilprog/ owsilprog] uses a Arduino | |||
* [http://www.silabs.com/products/mcu/Pages/ToolStick.aspx Silicon Labs Toolstick] available at [http://at.mouser.com/ProductDetail/Silicon-Labs/TOOLSTICK850-B-SK/?qs=sGAEpiMZZMuqBwn8WqcFUs%2fwPRHCOTglcuiSRjY%2fEIM%3d Mouser] for 8€ (requires [http://www.hacksmods.com/2012/05/silicon-labs-usb-toolstick-mod-for-blheli-flashing/ little modification]) | |||
[http://www.olliw.eu/2012/owsilprog/ owsilprog] uses a Arduino | |||
[http://www.silabs.com/products/mcu/Pages/ToolStick.aspx Silicon Labs Toolstick] available at [http://at.mouser.com/ProductDetail/Silicon-Labs/TOOLSTICK850-B-SK/?qs=sGAEpiMZZMuqBwn8WqcFUs%2fwPRHCOTglcuiSRjY%2fEIM%3d Mouser] for 8€ (requires [http://www.hacksmods.com/2012/05/silicon-labs-usb-toolstick-mod-for-blheli-flashing/ little modification]) | |||
==Related links== | |||
[http://www.helifreak.com/blog.php?u=144146&blogcategoryid=119 BLHeli Setup tool] | * [http://www.helifreak.com/blog.php?u=144146&blogcategoryid=119 BLHeli Setup tool] | ||
[http://oddcopter.com/2012/07/18/flashing-silabs-escs-with-blheli-firmware/ tutorial on oddcopter.com] | * [http://oddcopter.com/2012/07/18/flashing-silabs-escs-with-blheli-firmware/ tutorial on oddcopter.com] | ||
[https://github.com/bitdump/BLHeli bitdump/BLHeli] git repository | * [https://github.com/bitdump/BLHeli bitdump/BLHeli] git repository | ||
= Open BLDC = | = Open BLDC = | ||
Open hardware | Open hardware and open software brushless controller project. | ||
From small low cost up to 200A continous hardware, but currenty under development. | From small low cost up to 200A continous hardware, but currenty under development. | ||
Anyone wanna help ? :) <br/> | Anyone wanna help ? :) <br/> | ||
==Related links== | |||
[http://open-bldc.org/wiki/Open-BLDC Homepage] <br/> | * [http://open-bldc.org/wiki/Open-BLDC Homepage] <br/> | ||
[https://github.com/open-bldc open-bldc] git repository | * [https://github.com/open-bldc open-bldc] git repository | ||
[[Category:Hardware]] | [[Category:Hardware]] | ||
Revision as of 08:50, 13 January 2014
Introduction
ESC, Electric Speed Controllers, are required for controlling electric motors While most standard ESC's will work well with fixedwing, rotorcraft have higher requirements
Positive features for rotorcraft:
- Faster response to input signal
- Higher torque
- Accept higher or other input signal (higher PWM input or I2C)
- Less noise
Standard ESC can be used, but with a little work and an alternative firmware they will work better.
AVR (ATmega) based ESC
Simon Kirby develops an alternative firmware for ATmega based brushless motor controller, written in assembly.
Features:
- 16MHz operation on most boards
- 16-bit output PWM with full clock rate resolution (~18kHz PWM with a POWER_RANGE of 800 steps)
- 24-bit timing and PWM pulse tracking at full clock rate resolution
- ICP-based pulse time recording (on supported hardware) for zero PWM input control jitter
- Immediate PWM input to PWM output for best possible multicopter response (but NOT where soft start or really any significant current limiting is needed!)
- Accepts any PWM update rate (minimum ~5microseconds PWM low time)
- Optimized interrupt code (very low minimum PWM and reduced full throttle bump)
- Configurable board pin assignments by include file
- Smooth starting in most cases
- Forward and reverse commutation supported, including RC-car style reverse-neutral-forward PWM ranges, with optional braking
Programmer
Any ISP programmer will do the job, just some popular:
usbasp There are tons of cheap chinese copies out there. (use with avrdude)
mySmartUSB light Noob friendly software.
Related links
Hardware compatibility table (Openpilot)
Hardware compatibility table (google docs)
sim-/tgy git repository.
SiLabs based ESC
Some newer ESC are build with a Silicon Labs MCU with a Intel 8051 core.
They have a C2 programming interface and therefore need a special programmer.
Steffen Skaug provides an alternative firmware, written in assembly.
Features:
- Can be configured for helicopter MAIN motor or TAIL motor operation. Or as MULTIcopter motor operation.
- Main motor operation has governor functionality and multicopter motor operation has closed loop functionality.
- Motor operation can be damped for fast motor retardation.
- Many parameters can be programmed, either from PC applications for setup and configuration, or from the TX.
- Supports 1kHz, 2kHz, 4kHz, 8kHz or 12kHz positive or negative pwm as input signal, as well as regular 1-2ms PPM signal.
The easiest way is to program and set up the esc with the BLHeli setup tool (no surce available :( ).
Programmer
- owsilprog uses a Arduino
- Silicon Labs Toolstick available at Mouser for 8€ (requires little modification)
Related links
- BLHeli Setup tool
- tutorial on oddcopter.com
- bitdump/BLHeli git repository
Open BLDC
Open hardware and open software brushless controller project. From small low cost up to 200A continous hardware, but currenty under development.
Anyone wanna help ? :)