Modular Control - Revision history

Matt Maier at 22:18, 30 January 2012

2012-01-30T22:18:59Z

← Older revision		Revision as of 22:18, 30 January 2012
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	Well-Drilling Rig		Well-Drilling Rig
	Wind Turbine		Wind Turbine

			[[Category: Modular]]

Matt Maier at 05:15, 20 January 2012

2012-01-20T05:15:58Z

← Older revision		Revision as of 05:15, 20 January 2012
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	* Economies of scale. Make a lot of one thing, rather than a few of several different things.		* Economies of scale. Make a lot of one thing, rather than a few of several different things.
	* Faster prototyping. New machines can use the existing standards rather than require their own controller design.		* Faster prototyping. New machines can use the existing standards rather than require their own controller design.

			=Resources=
			* [http://www.isa.org/InTechTemplate.cfm?Section=InTech&template=/ContentManagement/ContentDisplay.cfm&ContentID=722 Linux For Real-Time (programmable logic computer) Control]
			* [http://www.instrumentation.co.za/article.aspx?pklarticleid=4108 PLC and FPGA to solve machine automation problems]

	=Axis Total from Examples=		=Axis Total from Examples=

Matt Maier at 05:21, 18 January 2012

2012-01-18T05:21:51Z

← Older revision		Revision as of 05:21, 18 January 2012
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	* Economies of scale. Make a lot of one thing, rather than a few of several different things.		* Economies of scale. Make a lot of one thing, rather than a few of several different things.
	* Faster prototyping. New machines can use the existing standards rather than require their own controller design.		* Faster prototyping. New machines can use the existing standards rather than require their own controller design.

			=Axis Total from Examples=
			* linear motion axis = stepper motor + 2(on/off sensor)
			* extrude axis = stepper motor
			* melt zone = heater + temp sensor
			* heated surface = heater + temp sensor
			* heated chamber = heater + temp sensor
			* rotary motion axis = stepper motor + on/off sensor
			* hinge joint axis = hydraulic cylinder

	=Examples=		=Examples=
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	* linear motion axis = stepper motor + 2(on/off sensor)		* linear motion axis = stepper motor + 2(on/off sensor)
	* extrude axis = stepper motor		* extrude axis = stepper motor
	* melt ~~chamber~~ = heater + temp sensor		* melt zone = heater + temp sensor
	* 3D printer = 3(linear motion axis) + extrude axis + melt ~~chamber~~		* 3D printer = 3(linear motion axis) + extrude axis + melt zone

	Optional		Optional

Matt Maier: /* Examples */

2012-01-18T05:19:42Z

Examples

← Older revision		Revision as of 05:19, 18 January 2012
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	3D printers are special purpose CNC machines. Locating the toolhead in 3D space requires at least 3 axes of controlled motion. Typically, these are linear axes controlled by stepper motors with one or two end stops. The toolhead itself is usually an extruder where raw material is fed by a stepper motor. Temperature needs to be controlled in the extruder.		3D printers are special purpose CNC machines. Locating the toolhead in 3D space requires at least 3 axes of controlled motion. Typically, these are linear axes controlled by stepper motors with one or two end stops. The toolhead itself is usually an extruder where raw material is fed by a stepper motor. Temperature needs to be controlled in the extruder.

	Some upgrades that are not strictly necessary, but can be useful, are a heated build surface, a heated build chamber, and additional axes. Typically, a 5-axis CNC system (add rotary axis to build surface and z-axis) is the practical limit.		Some upgrades that are not strictly necessary, but can be useful, are a heated build surface, a heated build chamber, and additional axes. Typically, a 5-axis CNC system (add rotary axis to build surface and z-axis) is the practical limit. Also, it is possible to add one or more extruders.

			While thermoplastic noodles are the approach to 3D printer chosen by the open source community, there are dozens of different approaches to 3D printing. The two next-most-popular are methods are gluing powder together with a binder (can be colored!) and fusing polymer together with a laser. These are both more difficult to control, require more specialized hardware, and utilize raw build material that is more difficult to work with (and obtain). Controlling these other systems would still require pretty much the same 3-axis motion, but the toolheads would be different.

	===Thermoplastic 3D Printer Control===		===Thermoplastic 3D Printer Control===
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	Optional		Optional
	* ~~built~~ surface = heater + temp sensor		* heated surface = heater + temp sensor
	* ~~build~~ chamber = heater + temp sensor		* heated chamber = heater + temp sensor
	* rotary motion axis = stepper motor + on/off sensor		* rotary motion axis = stepper motor + on/off sensor

	3D Scanner		==3D Scanner==
	Aluminum Extractor from Clay
	Backhoe		Control of this system will depend on whether or not the scanner needs to move. It probably doesn't, so no control will be necessary (just wave it around the object by hand).
	Bakery Oven
			==Aluminum Extractor from Clay==

			Arguably, this could end up being more of a "facility" than a "machine." Since this system has yet to really even be designed conceptually, there is no way to define a control system for it. However, if it does have moving parts (seems likely) they will probably the same kinds of moving parts as everything else.

			==Backhoe==

			A standard backhoe has 4 axes of hydraulic motion. The arm itself can slew from side to side and has three joints. They don't tend to have any position sensors; the operator's eyes provide the feedback.

			===Hydraulic Backhoe===
			* hinge joint axis = hydraulic cylinder
			* backhoe = 4(hinge joint axis)

			==Bakery Oven==

			Not really sure why this is here. At any rate, it will have one or more controlled heat zones.

			===Oven===
			* heated chamber = heater + temp sensor
			* oven = X(heated chamber)

	Baler		Baler
	Bioplastic Extruder		Bioplastic Extruder

Matt Maier: Created page with "=Rationale= The GVCS already contains several machines that will require relatively complex control systems (at least compared to a tractor). Since the entire GVCS is being desi..."

2012-01-18T05:06:00Z

Created page with "=Rationale= The GVCS already contains several machines that will require relatively complex control systems (at least compared to a tractor). Since the entire GVCS is being desi..."

New page

=Rationale=

The GVCS already contains several machines that will require relatively complex control systems (at least compared to a tractor). Since the entire GVCS is being designed from scratch, it makes sense to integrate the control systems for all the machines in such a way that a single controller can handle the most complex machine to the least complex machine.

Benefits of modular control architecture:
* Less machine down time. Just swap out the malfunctioning control unit with a backup.
* Simpler training. It's easier to train people on one control system than a bunch.
* Easier maintenance/troubleshooting. Identical control units will have identical problems that only need to be documented once.
* Economies of scale. Make a lot of one thing, rather than a few of several different things.
* Faster prototyping. New machines can use the existing standards rather than require their own controller design.

=Examples=

==3D Printer==

3D printers are special purpose CNC machines. Locating the toolhead in 3D space requires at least 3 axes of controlled motion. Typically, these are linear axes controlled by stepper motors with one or two end stops. The toolhead itself is usually an extruder where raw material is fed by a stepper motor. Temperature needs to be controlled in the extruder.

Some upgrades that are not strictly necessary, but can be useful, are a heated build surface, a heated build chamber, and additional axes. Typically, a 5-axis CNC system (add rotary axis to build surface and z-axis) is the practical limit.

===Thermoplastic 3D Printer Control===
* linear motion axis = stepper motor + 2(on/off sensor)
* extrude axis = stepper motor
* melt chamber = heater + temp sensor
* 3D printer = 3(linear motion axis) + extrude axis + melt chamber

Optional
* built surface = heater + temp sensor
* build chamber = heater + temp sensor
* rotary motion axis = stepper motor + on/off sensor

3D Scanner
Aluminum Extractor from Clay
Backhoe
Bakery Oven
Baler
Bioplastic Extruder
Bulldozer
CEB Press
Cement Mixer
Chipper / Hammermill
CNC Circuit Mill
CNC Torch Table
Dairy Milker
Dimensional Sawmill
Electrical Motor / Generator
Gasifier Burner
Hay Cutter
Hay Rake
Hydraulic Motor
Induction Furnace
Industrial Robot
Ironworker
Laser Cutter
Metal Roller
Microcombine
Microtractor
Modern Steam Engine
Multimachine
Nickel-Iron Battery
Nursery
Open Source Car
Open Source Truck
Pelletizer
Plasma Cutter
Power Cube
Press Forge
Rod and Wire Mill
Rototiller
Solar Concentrator
Spader
Steam Generator
Tractor
Trencher
Universal Power Supply
Universal Rotor
Universal Seeder
Universal Welder
Well-Drilling Rig
Wind Turbine