# Perceptual control theory
## MicroSim spec
- **Recommended sim type:** [[Control_system|control system]]
- **Microsimmability score:** 78/100
- **Layout:** drawing region (canvas) on top; control region (sliders/buttons) below.
### Parameters (tunable controls)
- `Reference signal`
- `Gain`
- `Disturbance`
### What animates
An agent acts to keep a perceived variable at its reference value despite disturbances.
### Learning objective
Explain behavior as the control of perception toward a reference [[Signal|signal]].
## Links (Wikipedia order)
<!-- injected from _registry/childlinks/Perceptual_control_theory.json (2026-07-30T02:09:12Z) -->
`Adaptive_control` · `Anthropology` · `Aristotle` · [[Artificial_intelligence]] · `Automation_and_Remote_Control` · `Behavior` · [[Black_box]] · [[Block_diagram]] · `Bode_plot` · `Causal_model` · `Claude_Bernard` · `Closed-loop_controller` · `Closed-loop_transfer_function` · `Coefficient_diagram_method` · `Cognitive_psychology` · `Cognitive_revolution` · [[Cognitive_science]] · `Control_loop` · `Control_reconfiguration` · [[Control_theory]] · `Controllability` · [[Cruise_control]] · [[Cybernetics]] · `Developmental_psychology` · `Digital_control` · [[Digital_signal_processing]] · `Distributed_control_system` · `Distributed_parameter_system` · `Edward_Thorndike` · [[Electric_motor]] · `Embedded_system` · `Energy-shaping_control` · `Ethology` · `Experimental_psychology` · `Fourier_transform` · `Fractional-order_control` · [[Frequency_response]] · [[Fuzzy_control_system]] · `Fuzzy_logic` · `Generative_model` · `H-infinity_loop-shaping` · `Hankel_singular_value` · [[Homeostasis]] · `Homeostat` · `Hybrid_computer` · `Industrial_control_system` · `Information_processing_(psychology)` · `Intelligent_control` · `Introspection` · `Inverse_kinematics` · `Inverted_pendulum` · `John_B._Watson` · `John_Dewey` · [[Kalman_filter]] · `Krener's_theorem` · [[Laplace_transform]] · `Lead–lag_compensator` · `Least_squares` · `Linguistics` · `Long-term_potentiation` · [[Lyapunov_stability]] · [[Machine_learning]] · [[Mechatronics]] · `Medical_cybernetics` · `Method_of_levels` · `Minor_loop_feedback` · [[Model_predictive_control]] · `Motion_control` · `NATO` · `Natural_selection` · [[Negative_feedback]] · `Neuron_(journal)` · [[Neuroscience]] · `New_York_City` · `Nonlinear_control` · [[Norbert_Wiener]] · [[Observability]] · [[Optimal_control]] · [[PID_controller]] · `Performance` · [[Positive_feedback]] · `Programmable_logic_controller` · [[Quantization_(signal_processing)]] · [[Real-time_computing]] · `Reflex` · [[Robotics]] · `Robust_control` · `Root_locus_analysis` · `Routledge` · `SCADA` · `Servomechanism` · `Setpoint_(control_system)` · [[Signal-flow_graph]] · `Sociology` · `Stability_theory` · `State-space_representation` · `State_observer` · `Steady_state` · `Stimulus_(psychology)` · `Stochastic_control` · `Synapse` · `Synaptic_plasticity` · [[System_dynamics]] · [[System_identification]] · [[Systems_biology]] · `Teleology` · [[Transfer_function]] · `Visual_perception` · `Walter_Bradford_Cannon` · [[Wayback_Machine]] · `Wilhelm_Wundt` · `William_James` · `William_T._Powers` · [[Z-transform]]
> p5.js MicroSim stub · part of Systems Science · [Wikipedia source](https://en.wikipedia.org/wiki/Perceptual_control_theory)
> Relation: subfield of systems science.
## Concept summary
Perceptual control theory (PCT) is a model of behavior based on the properties of [[Negative_feedback|negative feedback]] control loops.
## Build checklist
- [ ] Claim it: set `status: in-progress` + `lease` + `leased_at`
- [ ] Write the child page explaining the concept (tie it back to systems science)
- [ ] Finalize parameter ranges and defaults
- [ ] Implement the p5.js sketch (drawing + control regions)
- [ ] Add caption + the learning objective on the page
- [ ] Set `status: done`
## p5.js sketch
```javascript
// MicroSim: Perceptual control theory
let controls = {};
function setup() {
// createCanvas(...); create sliders for the parameters above.
}
function draw() {
// background(...); read controls; render control system; respond live.
}
```
---
Back to Systems Science · Wikipedia: [Perceptual control theory](https://en.wikipedia.org/wiki/Perceptual_control_theory)
---
<!-- SEMIOTIC-PROFILE:START -->
## Semiotic profile
> *The semiotic universals this article invokes, machine-derived from the crossref — **unverified** (born so). Populated 2026-07-06 for the Systems room.*
**Universals (5):** 🟢 control loop (8) · 🟡 system (8) · 🟡 science (5) · 🟢 signal (3) · 🟢 feedback (2)
**Enter by sign:** Systems Semiotic Gateway · Alphabetum · Icon Registry · ← Systems Portal
<!-- SEMIOTIC-PROFILE:END -->
## Wikipedia : Wikitube
**Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Perceptual_control_theory) : [Wikitube](https://en.wikitube.io/wiki/Perceptual_control_theory)
## Previous hub tags
Tree parents: [[Control_theory]] · [[Cybernetics]] · [[Systems_science]].
Legacy hubs: none.
---
*Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*