9 posts
Current projects
Working notes rather than finished papers: what we simulated, what came out, and what still does not add up. Written as the work happened.
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May 2022
Control theory of mutual synchronization in networks of delay-coupled phase-locked loops
Gain and phase margins assume an entraining reference. Mutual coupling changes the transfer function itself.
synchronizationphase-locked loopsPLLcontrol theorytransfer function
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May 2022
Ising Machines
Mapping combinatorial optimisation onto networks of coupled oscillators, and what sub-harmonic injection locking, inertia and delay do to the answer.
Ising machinesKuramoto modelsynchronizationphase-locked loopsPLL
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May 2022
Synchronization of rhythm in human human, human machine and machine machine interactions
What a room full of people clapping and a network of clocks have in common, and where the analogy stops.
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18 December 2018
On the differences between universal emergent time (UEC) and universal coordinated time (UTC)
Today's time standards feed a reference forward. What would a standard look like if the reference emerged from the network instead?
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14 December 2018
Howto run independent voltage noise sources (IID and GWN) in LTSpice using Bv-sources
LTSpice has no built-in noise source for transient runs. Bv-sources with white() get you independent, band-limited Gaussian noise.
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27 July 2018
Spice simulation of self-organized synchronization with LTC6900 oscillators
Two mutually delay-coupled DPLLs at 1 MHz in LTspice, and how the circuit parameters map onto the phase model.
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10 July 2018
Science Slam @Elbhangfest in Dresden, 2018/06/23
Ask an audience to clap for an encore and they synchronize. Ask them to do it a billion times a second and you need a different idea. (English and German)
synchronizationself-organized synchronizationScience SlamElbhangfest
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10 July 2018
Spice simulations of digital phase-locked loop systems
Testing DPLL architectures down to the transistor level before soldering anything.
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30 June 2017
Self-organized synchronization in electronic systems
The concept, the phase model, the prototype network, and what happens when clocks are heterogeneous.
synchronizationself-organizedphase-locked loopsPLLKuramoto model