PORTAL_Control_theory

## Images <figure class="wt-gifplate"> <img src="https://commons.wikimedia.org/wiki/Special:FilePath/Buck_switching_regulator_with_feedback_control.gif" alt="Feedback Regulation" loading="lazy" decoding="async"> <figcaption><strong>Feedback Regulation</strong> — Watch voltage oscillate around a target value, correcting itself. This is negative feedback.<br> <span class="wt-credit">Wikimedia Commons · <strong>licence pending verification</strong> (run <code>g17_gif_verify.py</code> on a networked lane) · <a href="https://commons.wikimedia.org/wiki/File:Buck_switching_regulator_with_feedback_control.gif">Details</a></span></figcaption> </figure> *Room plate for [[Control_theory]]. The interactive builds live below; this is the room's one still-motion establishing shot.*  The canonical spine of [[Control_theory]]: its full tree-verified child structure, publishable to Obsidian as the scaffold for route objects (microsims, songs, semiotics, cardsets, games, streams, transcripts) keyed to this hub.  ## Play every microsim on this page <p class="microsim-gallery-note">Every microsim linked from this portal, embedded live. <strong>54 players</strong> — 18 threejs · 36 p5js. 6 are staged but not yet deployed and show as placeholders.</p> <ul class="microsim-gallery"> <li class="microsim-card" data-lib="threejs"> <iframe src="https://wikitube-3d-microsims.netlify.app/Catastrophe_theory.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Catastrophe theory — threejs microsim"></iframe> <div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Catastrophe_theory">Catastrophe theory</a></div><div 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class="microsim-card" data-lib="p5js"> <iframe src="https://editor.p5js.org/sciencenibber/full/4HJeXX2SZ" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Z-transform (p5.js) — p5js microsim"></iframe> <div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Z-transform">Z-transform (p5.js)</a></div><div class="ms-sub">p5js · <a href="https://editor.p5js.org/sciencenibber/full/4HJeXX2SZ" target="_blank" rel="noopener">open in the p5 editor</a> · on <a href="https://en.wikitube.io/wiki/Z-transform">Z-transform</a></div></div> </li> <li class="microsim-card is-pending" data-lib="threejs"> <div class="ms-placeholder">Staged, not yet deployed — <code>Set_theory.html</code></div> <div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Set_theory">Controls -> what each maps to</a></div><div class="ms-sub">threejs · awaiting CDN deploy · on <a href="https://en.wikitube.io/wiki/Set_theory">Set theory</a></div></div> </li> <li class="microsim-card" data-lib="threejs"> <iframe src="https://wikitube-3d-microsims.netlify.app/Decision_theory.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Decision theory — threejs microsim"></iframe> <div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Decision_theory">Decision theory</a></div><div class="ms-sub">threejs · <a href="https://wikitube-3d-microsims.netlify.app/Decision_theory.html" target="_blank" rel="noopener">open full-screen</a></div></div> </li> <li class="microsim-card is-pending" data-lib="threejs"> <div class="ms-placeholder">Staged, not yet deployed — <code>Dynamic_programming.html</code></div> <div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Dynamic_programming">Dynamic programming</a></div><div class="ms-sub">threejs · awaiting CDN deploy</div></div> </li> <li class="microsim-card is-pending" data-lib="threejs"> <div class="ms-placeholder">Staged, not 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[[WT!Three_js_Microsim_Master_Class|three.js]] and [[WT!P5_js_Microsim_Master_Class|p5.js]].   *Microsims from the articles linked below:* <div class="wt-simrow"> <div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/Autopilot.html" data-title="Autopilot"></div> <div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Electric_motor.html" data-title="Electric motor"></div> <div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Resistor.html" data-title="Resistor"></div> <div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Capacitor.html" data-title="Capacitor"></div> <div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Inductor.html" data-title="Inductor"></div> <div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Diode.html" data-title="Diode"></div> <div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Transistor.html" data-title="Transistor"></div> <div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Alternating_current.html" data-title="Alternating current"></div> <div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/acoustics/Loudspeaker.html" data-title="Loudspeaker"></div> <div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/matter/Nuclear_reactor.html" data-title="Nuclear reactor"></div> <div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/acoustics/Resonance.html" data-title="Resonance"></div> </div>   ## Canonical link structure — 482 tree-verified children Hub article: [[Control_theory]] · tree harvested 2026-07-29T22:35:33Z · every entry below is in this hub's harvested child tree (v09-gated). Unbuilt links are intentional forward-refs: the populate scaffold. **A** — [[Absolute_value]] · [[Abstract_algebra]] · [[Active_optics]] · [[Actuator]] · [[Adaptive_control]] · [[Adaptive_system]] · [[Adolf_Hurwitz]] · [[Aerospace_manufacturer]] · [[Affine_geometry]] · [[Aleksandr_Lyapunov]] · [[Alexander_Bogdanov]] · [[Alexander_Lerner]] · [[Alexey_Lyapunov]] · [[Alfred_Radcliffe-Brown]] · [[Algebra]] · [[Algebraic_equation]] · [[Algebraic_geometry]] · [[Algebraic_number_theory]] · [[Algebraic_topology]] · [[Ali_H._Nayfeh]] · [[Allenna_Leonard]] · [[Analytic_geometry]] · [[Analytic_number_theory]] · [[Anatol_Rapoport]] · [[Andrey_Kolmogorov]] · [[Anthony_Wilden]] · [[Applied_mathematics]] · [[Arithmetic]] · [[Arithmetic_geometry]] · [[Artificial_intelligence]] · [[ArXiv]] · [[Audio_power_amplifier]] · [[Audio_signal]] · [[Automation]] · [[Automation_and_Remote_Control]] · [[Autopilot]] **B** — [[Backstepping]] · [[Bandwidth_(signal_processing)]] · [[Bang–bang_control]] · [[Barbara_J._Grosz]] · [[Bayesian_probability]] · [[Behavioural_sciences]] · [[Bibcode]] · [[BIBO_stability]] · [[Biocybernetics]] · [[Biological_system]] · [[Biomedical_cybernetics]] · [[Biorobotics]] · [[Biosemiotics]] · [[Block_diagram]] · [[Bode_plot]] · [[Bond_graph]] · [[Bounded_function]] · [[Brain–computer_interface]] · [[BSI_Group]] · [[Buckminster_Fuller]] · [[Béla_H._Bánáthy]] **C** — [[C._West_Churchman]] · [[Calculus]] · [[Cartesian_coordinate_system]] · [[Catastrophe_theory]] · [[Category_theory]] · [[Cell_(biology)]] · [[Centrifugal_governor]] · [[Charles_A._S._Hall]] · [[Charles_François_(systems_scientist)]] · [[CiteSeerX]] · [[Claude_Bernard]] · [[Claude_Shannon]] · [[Cliff_Joslyn]] · [[Closed-loop_controller]] · [[Closed-loop_transfer_function]] · [[Coefficient_diagram_method]] · [[Combinatorics]] · [[Commutative_algebra]] · [[Complex_analysis]] · [[Complex_geometry]] · [[Complex_plane]] · [[Complex_system]] · [[Computational_complexity_theory]] · [[Computational_geometry]] · [[Computational_mathematics]] · [[Computational_neuroscience]] · [[Computer_algebra]] · [[Computer_network]] · [[Computer_numerical_control]] · [[Computer_science]] · [[Connectionism]] · [[Controllability]] · [[Control_(linguistics)]] · [[Control_engineering]] · [[Control_loop]] · [[Control_reconfiguration]] · [[Control_system]] · [[Control_theory_(sociology)]] · [[Control–feedback–abort_loop]] · [[Conversation_theory]] · [[Convex_geometry]] · [[Coupled_human–environment_system]] · [[Cruise_control]] · [[Cybernetics]] · [[Cybernetics_in_the_Soviet_Union]] **D** — [[Dawn_Tilbury]] · [[Dead-beat_control]] · [[Decision_theory]] · [[Describing_function]] · [[Diederich_Hinrichsen]] · [[Differential_equation]] · [[Differential_geometry]] · [[Differential_topology]] · [[Digital_control]] · [[Digital_object_identifier]] · [[Digital_signal_processing]] · [[Diophantine_geometry]] · [[Discrete_geometry]] · [[Discrete_mathematics]] · [[Discrete_time_and_continuous_time]] · [[Distributed_control_system]] · [[Distributed_parameter_system]] · [[Donella_Meadows]] · [[Doubling_time]] · [[Dynamical_system]] · [[Dynamical_systems_theory]] · [[Dynamic_programming]] **E** — [[Earth_system_science]] · [[Economics]] · [[Economic_system]] · [[Ecosystem]] · [[Edsger_W._Dijkstra]] · [[Eduardo_D._Sontag]] · [[Edward_Norton_Lorenz]] · [[Edward_Routh]] · [[Eigenvalues_and_eigenvectors]] · [[Electric_motor]] · [[Electronics]] · [[Elementary_algebra]] · [[Embedded_system]] · [[Emergence]] · [[Energy-shaping_control]] · [[Energy_Conversion_and_Management]] · [[Engineering_cybernetics]] · [[Engineering_mathematics]] · [[Erich_von_Holst]] · [[Eric_Trist]] · [[Ernst_von_Glasersfeld]] · [[Euclidean_geometry]] · [[Evolutionary_computation]] **F** — [[Faina_Kirillova]] · [[Feedback]] · [[Feedback_linearization]] · [[Feed_forward_(control)]] · [[Field-oriented_control]] · [[Field_(mathematics)]] · [[Finite_geometry]] · [[Fire-control_system]] · [[Foundations_of_mathematics]] · [[Fourier_transform]] · [[Fractional-order_control]] · [[Francisco_Varela]] · [[Francis_Heylighen]] · [[Frederic_Vester]] · [[Fred_Emery_(psychologist)]] · [[Frequency]] · [[Frequency_domain]] · [[Frequency_response]] · [[Functional_analysis]] · [[Future_of_mathematics]] · [[Fuzzy_control_system]] · [[Fuzzy_logic]] **G** — [[Gain_(electronics)]] · [[Game_theory]] · [[General_topology]] · [[Genetic_algorithm]] · [[Genevieve_Bell]] · [[Geoffrey_Vickers]] · [[Geomathematics]] · [[Geometric_topology]] · [[Geometry]] · [[George_Dantzig]] · [[George_Klir]] · [[Glossary_of_mathematical_symbols]] · [[Good_regulator_theorem]] · [[Gordon_Pask]] · [[Gordon_S._Brown]] · [[Graph_theory]] · [[Gregory_Bateson]] · [[Group_theory]] · [[Guidance_system]] **H** — [[H-infinity_loop-shaping]] · [[H-infinity_methods_in_control_theory]] · [[Hankel_singular_value]] · [[Harmonic_analysis]] · [[Harold_Stephen_Black]] · [[Harry_Nyquist]] · [[Heinz_von_Foerster]] · [[Hendrik_Wade_Bode]] · [[Hierarchical_control_system]] · [[Hierarchy]] · [[History_of_mathematics]] · [[Homeostasis]] · [[Homological_algebra]] · [[Homotopy_theory]] · [[Howard_T._Odum]] · [[Humberto_Maturana]] · [[Hybrid_computer]] **I** — [[I._A._Richards]] · [[Igor_Aleksander]] · [[Ilya_Prigogine]] · [[Imaginary_number]] · [[Impulse_response]] · [[Industrial_control_system]] · [[Industrial_process_control]] · [[Informal_mathematics]] · [[Information_geometry]] · [[Information_system]] · [[Information_theory]] · [[Input-to-state_stability]] · [[Instability]] · [[Integral_windup]] · [[Integrator]] · [[Intelligent_control]] · [[Internal_model_(motor_control)]] · [[Irmgard_Flügge-Lotz]] · [[ISBN]] · [[ISSN]] **J** — [[Jacques_Charles_François_Sturm]] · [[Jacque_Fresco]] · [[Jakob_Johann_von_Uexküll]] · [[James_Clerk_Maxwell]] · [[James_Grier_Miller]] · [[James_J._Kay]] · [[Jan_Camiel_Willems]] · [[Jason_Jixuan_Hu]] · [[Jay_Wright_Forrester]] · [[Jennifer_Wilby]] · [[John_N._Warfield]] · [[John_R._Ragazzini]] · [[John_Seddon]] · [[JSTOR]] **K** — [[Kalman_filter]] · [[Kathleen_Carley]] · [[Katia_Sycara]] · [[Keith_Glover]] · [[Kenneth_E._Boulding]] · [[Kevin_Warwick]] · [[Krener's_theorem]] **L** — [[Laplace_transform]] · [[Large_numbers]] · [[Lead–lag_compensator]] · [[Least_squares]] · [[Lev_Pontryagin]] · [[Limiting_factor]] · [[Limit_cycle]] · [[Linearization]] · [[Linear_algebra]] · [[Linear_differential_equation]] · [[Linear_function]] · [[Linear_matrix_inequality]] · [[Linear_system]] · [[Linear_time-invariant_system]] · [[Linear–quadratic–Gaussian_control]] · [[Lists_of_mathematicians]] · [[Lists_of_mathematics_topics]] · [[List_of_films_about_mathematicians]] · [[List_of_life_sciences]] · [[List_of_people_in_systems_and_control]] · [[List_of_systems_sciences_organizations]] · [[List_of_systems_scientists]] · [[Living_systems]] · [[Loudspeaker]] · [[Ludwig_von_Bertalanffy]] · [[Lyapunov_function]] · [[Lyapunov_stability]] · [[Lydia_Kavraki]] **M** — [[Machine_learning]] · [[Maleyka_Abbaszadeh]] · [[Management_cybernetics]] · [[Manfred_Clynes]] · [[Manuela_M._Veloso]] · [[Margaret_Boden]] · [[Margaret_Mead]] · [[Marginal_stability]] · [[Marian_Mazur]] · [[Markov_chain_approximation_method]] · [[Mary_Cartwright]] · [[Mass-spring-damper_model]] · [[Mathematical_analysis]] · [[Mathematical_and_theoretical_biology]] · [[Mathematical_chemistry]] · [[Mathematical_economics]] · [[Mathematical_finance]] · [[Mathematical_linguistics]] · [[Mathematical_logic]] · [[Mathematical_model]] · [[Mathematical_optimization]] · [[Mathematical_physics]] · [[Mathematical_psychology]] · [[Mathematical_sociology]] · [[Mathematical_statistics]] · [[Mathematician]] · [[Mathematics]] · [[Mathematics_and_art]] · [[Mathematics_education]] · [[Measure_(mathematics)]] · [[Mechatronics]] · [[Medical_cybernetics]] · [[Mihajlo_D._Mesarovic]] · [[Mike_Jackson_(systems_scientist)]] · [[MIMO]] · [[Minor_loop_feedback]] · [[MMT_Observatory]] · [[Model_predictive_control]] · [[Motion_control]] · [[Multi-agent_system]] · [[Murray_Bowen]] **N** — [[N._Katherine_Hayles]] · [[Natalia_Bekhtereva]] · [[Negative-feedback_amplifier]] · [[Negative_feedback]] · [[Nervous_system]] · [[Networked_control_system]] · [[Neural_network_(machine_learning)]] · [[Neuro-fuzzy]] · [[Nicolas_Minorsky]] · [[Niklas_Luhmann]] · [[Nonlinear_control]] · [[Nonlinear_system]] · [[Norbert_Wiener]] · [[Nuclear_reactor]] · [[Number]] · [[Number_theory]] · [[Numerical_analysis]] · [[Numerical_method]] · [[Nyquist_stability_criterion]] **O** — [[Observability]] · [[Open-loop_controller]] · [[Operations_research]] · [[Optimal_control]] · [[Otto_Mayr]] · [[Outline_of_management]] · [[Overshoot_(signal)]] **P** — [[Perceptual_control_theory]] · [[Performance]] · [[Perturbation_theory]] · [[Peter_Senge]] · [[Petro_Grigorenko]] · [[Philosophy_of_mathematics]] · [[PID_controller]] · [[Pierre-Louis_Lions]] · [[Pierre-Simon_Laplace]] · [[Plant_(control_theory)]] · [[Poincaré_map]] · [[Polar_coordinate_system]] · [[Pontryagin's_maximum_principle]] · [[Positive_feedback]] · [[Positive_systems]] · [[Principia_Cybernetica]] · [[Probability_theory]] · [[Process_variable]] · [[Programmable_logic_controller]] · [[Projective_geometry]] · [[PubMed]] · [[PubMed_Central]] **Q** — [[Qian_Xuesen]] · [[Quantization_(signal_processing)]] **R** — [[Radhika_Nagpal]] · [[Radial_basis_function]] · [[Ranulph_Glanville]] · [[Real-time_computing]] · [[Real_analysis]] · [[Recommender_system]] · [[Recreational_mathematics]] · [[Resonance]] · [[Richard_Bellman]] · [[Rise_time]] · [[Robert_Trappl]] · [[Robotics]] · [[Robust_control]] · [[Root_locus_analysis]] · [[Routh–Hurwitz_theorem]] · [[Rudolf_E._Kálmán]] · [[Russell_L._Ackoff]] · [[Ruzena_Bajcsy]] **S** — [[Sampling_(statistics)]] · [[SCADA]] · [[Scientific_American]] · [[Second-order_cybernetics]] · [[Self-organization]] · [[Self-organized_criticality_control]] · [[Self-oscillation]] · [[Semantic_Scholar]] · [[Semiotics]] · [[Sensor]] · [[Sergei_Kurdyumov]] · [[Servomechanism]] · [[Setpoint_(control_system)]] · [[Settling_time]] · [[Set_theory]] · [[Ship_stability]] · [[Signal-flow_graph]] · [[Simulation]] · [[Simulation_language]] · [[Single-input_single-output_system]] · [[Sliding_mode_control]] · [[Social_system]] · [[Sociocybernetics]] · [[Sociotechnical_system]] · [[Space_Race]] · [[Stability_theory]] · [[Stabilizer_(ship)]] · [[Stable_polynomial]] · [[Stafford_Beer]] · [[State-space_representation]] · [[State_observer]] · [[State_space_(computer_science)]] · [[State_variable]] · [[Statistics]] · [[Steady_state]] · [[Stephanie_Forrest]] · [[Stochastic_control]] · [[Stuart_Kauffman]] · [[Stuart_Umpleby]] · [[Superposition_principle]] · [[Synergetics_(Haken)]] · [[System]] · [[Systemics]] · [[Systems_analysis]] · [[Systems_art]] · [[Systems_biology]] · [[Systems_ecology]] · [[Systems_engineering]] · [[Systems_neuroscience]] · [[Systems_pharmacology]] · [[Systems_philosophy]] · [[Systems_psychology]] · [[Systems_science]] · [[Systems_theory]] · [[Systems_theory_in_anthropology]] · [[Systems_theory_in_archaeology]] · [[Systems_theory_in_political_science]] · [[Systems_thinking]] · [[System_dynamics]] · [[System_identification]] **T** — [[Talcott_Parsons]] · [[Telescope]] · [[Theory_of_computation]] · [[Timeline_of_mathematics]] · [[Topology]] · [[Transfer_function]] · [[Transformation_(function)]] · [[Transient_response]] · [[Transient_state]] · [[Tree_(abstract_data_type)]] · [[Twelve_leverage_points]] · [[Type_theory]] **U** — [[Ulla_Mitzdorf]] · [[Underactuation]] · [[Unit_circle]] · [[Urban_metabolism]] **V** — [[Vadim_Utkin]] · [[Valentino_Braitenberg]] · [[Valentin_Turchin]] · [[Variable_(mathematics)]] · [[Victor_Aladjev]] · [[Viscosity_solution]] · [[Voltage]] **W** — [[W._M._Keck_Observatory]] · [[W._Ross_Ashby]] · [[Walter_Bradford_Cannon]] · [[Walter_Pitts]] · [[Warren_E._Dixon]] · [[Warren_Sturgis_McCulloch]] · [[Watt_steam_engine]] · [[Wavefront]] · [[Wiener_filter]] · [[William_Grey_Walter]] · [[World-systems_theory]] · [[World_War_II]] · [[Wright_brothers]] **Y** — [[Youla–Kucera_parametrization]] **Z** — [[Z-transform]] · [[Zeros_and_poles]] ## Route objects (§10.3 stubs — placeholders declared in `_registry/firebase/`) - **microsim** — `microsim/{library}/Control_theory__{YYYYMMDD}T{HHMM}Z/` - **songs** — `songs/{Band_name}/{Song_name}/Control_theory/` - **semiotics** — `semiotics/{authorizer}/{set}/{Song_name}/{audio_video_id}/Control_theory/` - **cardset** — `cardset/{authorizer}/{set}/Control_theory/` - **games** — `games/quizzes/Control_theory/` - **channel_stream** — `channel_stream/Control_theory/` - **transcripts** — `transcripts/{audio_video_id}/Control_theory/` Hub + children route keys are pre-declared in `_registry/firebase/expansion_matches.csv` (54,000 Related Wikipedia Matches). Minting any leaf passes §10.1 registration.  --- *Repopulated 2026-09-19 · append-only · source: _tools/generate/g34_portal_section_sims.py@36068b13 (players of the linked articles, each URL 200-checked) · 1 added · 0 deletions*