Constant speed source and position control - Revision history

Apm: /* Related */ added link to Retractile cascades

2025-12-15T10:00:44Z

Related: added link to Retractile cascades

← Older revision		Revision as of 12:00, 15 December 2025
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	* [[Mechanical-electrical analogies]]		* [[Mechanical-electrical analogies]]
	* [[Intercrystolecular snapping modes]] & [[Snapback]]		* [[Intercrystolecular snapping modes]] & [[Snapback]]
	* [[Reversible computation]]		* [[Reversible computation]] & [[Retractile cascade]]s
	* [[Tracing trajectories of component in machine phase]]		* [[Tracing trajectories of component in machine phase]]
	* [[Digital control over reversibly composable units of matter]]		* [[Digital control over reversibly composable units of matter]]

Apm: added: == Fast crashing events ==

2025-10-31T11:30:16Z

added: == Fast crashing events ==

@@ Line 57: / Line 57: @@
 – smaller in deflections <br>
 More analysis needed. Just a note for caution. <br>
 == Why constant (angular)speed rather than constant force/moment? ==

Apm: added headline == The two scary events in electrical case and mechanical analogy ==

2025-10-31T11:20:53Z

added headline == The two scary events in electrical case and mechanical analogy ==

← Older revision		Revision as of 13:20, 31 October 2025
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	there needs to be a focus on avoiding high energy dissipation events. <br>		there needs to be a focus on avoiding high energy dissipation events. <br>
	particularly: [[Intercrystolecular snapping modes]] <br>		particularly: [[Intercrystolecular snapping modes]] <br>

			== The two scary events in electrical case and mechanical analogy ==

	'''In electrical systems these high energy dissipation events correspond to the "scary events" of:'''		'''In electrical systems these high energy dissipation events correspond to the "scary events" of:'''

Apm: added == Slow crushing events ==

2025-10-31T11:19:41Z

added == Slow crushing events ==

@@ Line 12: / Line 12: @@
 '''In the mechanical case of our focus the analogies are:'''
-* not holding/retaining a force (or moment) causing a speed (or angular speed) excursion
+* not holding/retaining a force (or moment) causing a speed (or angular speed) excursion <bR>(also known as "free wheeling"; ever seen a large ships anchor chain out of control?)
-* suddenly stopping a speed (or angular speed) causing a force (or moment
+* suddenly stopping a speed (or angular speed) causing a force (or moment) excursion (aka: fast "crashing" and slow "crushing")
 => the result usually being just high energy dissipation as <br>
 [[superelasticity]] of [[crystolecules]] can absorb these excursions. <br>
 And extreme mechanical excitations can dissipate the energy in a high frequency ring down.
 Snapping events combine both types of scary event. <br>
@@ Line 30: / Line 32: @@
 One basically can count one as a form of the other. <br>
 There is no clear border. <br>
 == Why constant (angular)speed rather than constant force/moment? ==

Apm at 11:01, 31 October 2025

2025-10-31T11:01:30Z

← Older revision		Revision as of 13:01, 31 October 2025
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	due to densely packed nanomachinery operating at higher frequencies (~MHz) <br>		due to densely packed nanomachinery operating at higher frequencies (~MHz) <br>
	there needs to be a focus on avoiding high energy dissipation events. <br>		there needs to be a focus on avoiding high energy dissipation events. <br>
			particularly: [[Intercrystolecular snapping modes]] <br>

	'''In electrical systems these high energy dissipation events correspond to the "scary events" of:'''		'''In electrical systems these high energy dissipation events correspond to the "scary events" of:'''

Apm: big improvements,added content, added linebreaks

2025-10-31T11:00:41Z

big improvements,added content, added linebreaks

← Older revision		Revision as of 13:00, 31 October 2025
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	In advanced [[gem based APM]] systems both for use and production <br>		In advanced [[gem based APM]] systems both for use and production <br>
	due to densely packed nanomachinery operating at higher frequencies (~MHz) <br>		due to densely packed nanomachinery operating at higher frequencies (~MHz) <br>
	there needs to be a focus on avoiding high energy dissipation events.		there needs to be a focus on avoiding high energy dissipation events. <br>

	'''In electrical systems these high energy dissipation events correspond to the "scary events" of:'''		'''In electrical systems these high energy dissipation events correspond to the "scary events" of:'''
Line 17:		Line 17:
	And extreme mechanical excitations can dissipate the energy in a high frequency ring down.		And extreme mechanical excitations can dissipate the energy in a high frequency ring down.

	Snapping events combine both types of scary event.		Snapping events combine both types of scary event. <br>
	– First the force or moment (from bending or vdW forces) is no longer held,		– First the force or moment (from bending or vdW forces) is no longer held, <br>
	– then possibly (but not necessarily) the to-high-speeds-accelerated part slams into a wall without any gentle breakig first.		– then possibly (but not necessarily) the to-high-speeds-accelerated part slams into a wall without any gentle breakig first. <br>
	… exciting lots of complex mechanical modes to high energy		… exciting lots of complex mechanical modes to high energy <br>
	Without the slamming and thus a more smooth back and forth wiggle ring-down		Without the slamming and thus a more smooth back and forth wiggle ring-down <br>
	eventually the same amount of energy is dissipated in the end.		eventually the same amount of energy is dissipated in the end. <br>
	Same amount of problematic heat gets generated. It just takes a little while longer.		Same amount of problematic heat gets generated. It just takes a little while longer. <br>
	Just a little because at the nanoscale		Just a little because at the nanoscale <br>
	the space between the high energy mechanical modes		the space between the high energy mechanical modes <br>
	and the low energy phonon modes is small.		and the low energy phonon modes is small. <br>
	One basically can count one as a form of the other.		One basically can count one as a form of the other. <br>
	There is no clear border.		There is no clear border. <br>

	~~Since for may things like mechanical control logic~~		== Why constant (angular)speed rather than constant force/moment? ==
	~~there is no real load at the end of the driven kinematic chain,~~
	~~using a~~ constant ~~force~~ (or constant moment~~) dive would not a non held force (a scary free wheeling sate).~~

	~~It would also sort of correspond to not constraining~~ the ~~abstract 1D coordinate~~ of the kinematic chain ~~to the [[machine phase]].~~		Since for may things like mechanical control logic <br>
	~~I.e. Constant~~ force ~~source on on an unheld load can be seen as leaving towards out of [[machine phase]]~~.		there is no real load at the end of the driven kinematic chain, <br>
			using a constant force (or constant moment) dive would not a non held force (a scary free wheeling sate). <br>

	~~Thus constant a speed drive~~ would ~~be more~~ of ~~a default for many cases~~ of ~~low load~~ [[~~crystolecule~~]] ~~based mechanical nanosystems~~.		It would also sort of correspond to not constraining the abstract 1D coordinate of the kinematic chain to the [[machine phase]]. <br>
	~~Analog to using constant current~~ source ~~when driving LED diodes~~ as ~~beyond their voltage they act like almost like electrical shorts~~.		I.e. Constant force source on on an unheld load can be seen as leaving towards out of [[machine phase]]. <br>

	~~With the caveat that in the case~~ of ~~high load systems and~~ a ~~constant force/moment source can be used.~~		Thus constant a speed drive would be more of a default for many cases of low load [[crystolecule]] based mechanical nanosystems. <br>
	~~The systems resistance then arbitrarily adjusts the actual speeds/frequencies.~~		Analog to using constant current source when driving LED diodes as beyond their voltage they act like almost like electrical shorts. <br>
	~~To save spatial part~~ of ~~the~~ [[~~machine phase~~]] ~~property~~.
	~~One still can (and needs~~ to~~) track the abstract coordinate motion(s).~~
	~~If click count tracked~~ as ~~such then while~~
	~~one loses the synchronicity and precision in time,~~
	~~one still does not lose the information in which step of the process the current state is~~.

	Holding a force/moment also corresponds to keeping the charge constant.		=== Caveat ===
	This probably can be used to extend on the helpful mechanical electrical analogies.
			With the caveat that in the case of high load systems and a constant force/moment source can be used. <br>
			The systems resistance then arbitrarily adjusts the actual speeds/frequencies. <br>
			To save spatial part of the [[machine phase]] property. <br>
			One still can (and needs to) track the abstract coordinate motion(s). <br>
			If click count tracked as such then while <br>
			one loses the synchronicity and precision in time, <br>
			one still does not lose the information in which step of the process the current state is. <br>

			Weaker form of machine phase? <br>

			== Position control (as in [[machine phase]])==

			Holding a force/moment also corresponds to keeping the charge constant. <br>
			This probably can be used to extend on the helpful mechanical electrical analogies. <br>

			Defining a motion in machine phase by trajectory <br>
			– not just in space <br>
			– but in time too <br>
			is done by specifying x(t)and <br>
			by simple basic derivation v(t) = d/dx x(t) <br>
			one gets a constant speed source situation. <br>
			The electrical correspondence being: i(t) = d/dx q(t) <br>
			See main page: [[Tracing trajectories of component in machine phase]] <br>

			----
			Given a certain fixes capacity a fixed charge means a fixed voltage U = Q/C <br>
			Given a certain fixes sping-softness a fixed position means a fixed force F = x/(1/k) = k x <br>

	== Related ==		== Related ==

Apm: basic page

2025-10-31T10:40:51Z

basic page

New page

{{stub}}

In advanced [[gem based APM]] systems both for use and production <br>
due to densely packed nanomachinery operating at higher frequencies (~MHz) <br>
there needs to be a focus on avoiding high energy dissipation events.

'''In electrical systems these high energy dissipation events correspond to the "scary events" of:'''
* short circuiting a capacitor causing a current excursion
* open circuiting an inductor causing a voltage excursion
=> result being high energy dissipation at best and irreversible damage at worst

'''In the mechanical case of our focus the analogies are:'''
* not holding/retaining a force (or moment) causing a speed (or angular speed) excursion
* suddenly stopping a speed (or angular speed) causing a force (or moment
=> the result usually being just high energy dissipation as <br>
[[superelasticity]] of [[crystolecules]] can absorb these excursions. <br>
And extreme mechanical excitations can dissipate the energy in a high frequency ring down.

Snapping events combine both types of scary event.
– First the force or moment (from bending or vdW forces) is no longer held,
– then possibly (but not necessarily) the to-high-speeds-accelerated part slams into a wall without any gentle breakig first.
… exciting lots of complex mechanical modes to high energy
Without the slamming and thus a more smooth back and forth wiggle ring-down
eventually the same amount of energy is dissipated in the end.
Same amount of problematic heat gets generated. It just takes a little while longer.
Just a little because at the nanoscale
the space between the high energy mechanical modes
and the low energy phonon modes is small.
One basically can count one as a form of the other.
There is no clear border.

Since for may things like mechanical control logic
there is no real load at the end of the driven kinematic chain,
using a constant force (or constant moment) dive would not a non held force (a scary free wheeling sate).

It would also sort of correspond to not constraining the abstract 1D coordinate of the kinematic chain to the [[machine phase]].
I.e. Constant force source on on an unheld load can be seen as leaving towards out of [[machine phase]].

Thus constant a speed drive would be more of a default for many cases of low load [[crystolecule]] based mechanical nanosystems.
Analog to using constant current source when driving LED diodes as beyond their voltage they act like almost like electrical shorts.

With the caveat that in the case of high load systems and a constant force/moment source can be used.
The systems resistance then arbitrarily adjusts the actual speeds/frequencies.
To save spatial part of the [[machine phase]] property.
One still can (and needs to) track the abstract coordinate motion(s).
If click count tracked as such then while
one loses the synchronicity and precision in time,
one still does not lose the information in which step of the process the current state is.

Holding a force/moment also corresponds to keeping the charge constant.
This probably can be used to extend on the helpful mechanical electrical analogies.

== Related ==

* [[Machine phase]]
* [[Mechanical-electrical analogies]]
* [[Intercrystolecular snapping modes]] & [[Snapback]]
* [[Reversible computation]]
* [[Tracing trajectories of component in machine phase]]
* [[Digital control over reversibly composable units of matter]]