Control, sensors, actuators, and project work.
Browse nine technical notes by topic and publication date.
Control methods and feedback systems.
Fuzzy logic, PWM, and PI humidity control from signal concepts through system behavior.
Fuzzy Logic: Fundamentals, Membership Functions, and Control Rules
Fuzzy sets, membership functions, AND/OR/NOT operators, rule bases, Mamdani Max–Min inference, and defuzzification.
Read the full note →1 NOV 2017 · CONTROL SIGNALSPulse Width Modulation: Duty Cycle, Frequency, Motors, and Servo Signals
Timing, average power, motor-drive behavior, current ripple, servo command pulses, timer resolution, and feedback.
Read the full note →27 APR 2017 · PROJECT CONTROLPI Control of Humidity in an Aeroponic System
DHT11 measurement, fan actuation, PI equations, Kp = 2.22, Ti = 280, recorded errors, video, and prototype views.
Read the project note →The hardware and physical effects behind the loop.
Motor, humidity, piezoelectric transducer, and atomizer notes connect component physics to system behavior.
DC Motors: Operating Principle and Speed Control
Back EMF, torque, speed equations, flux control, armature resistance, armature voltage, and PWM drive.
Read the full note →10 NOV 2017 · ULTRASONICSUltrasonic Transducers: Piezoelectric Principle, Construction, and Design
Direct and converse piezoelectric effects, resonance, active layers, backing, matching, materials, and acoustic coupling.
Read the full note →24 MAY 2017 · SENSORSHumidity Sensors: Capacitive Sensing, RH, Error Sources, and Control Use
Capacitor physics, dielectric response, RH, calibration, hysteresis, response time, condensation, placement, and DHT11 context.
Read the full note →8 MAY 2017 · ATOMIZATIONUltrasonic Mist Makers: Atomization, Droplets, and Aeroponic Use
1.6 MHz project context, operating depth, dry-run protection, droplets versus vapor, mist transport, and aeroponic limitations.
Read the full note →Aeroponics as a complete engineering system.
System boundary, control architecture, root-zone delivery, humidity, nutrient solution, pH, EC, reservoir dynamics, and failure modes.
Designing a Controlled Aeroponic System
Control objective, block diagram, mist delivery, fan actuation, sensor placement, electrical interfaces, faults, and commissioning.
Read the project note →4 MAY 2017 · SYSTEM CONTEXTAeroponic Systems: Root-Zone Delivery, Humidity, Nutrients, pH, and EC
Root-zone delivery, reservoir behavior, chemistry monitoring, control variables, and failure modes.
Read the full note →