Sampled-Variable Control Systems TRIZ Cases

Operating maps adjust compressor speed and valve position from demand and condition data to avoid shutdowns and improve HVAC efficiency.

A hierarchical predictive controller uses building thermal mass and free cooling first, cutting energy cost while keeping room comfort stable.

Hierarchical agents and actuators adjust cooling flow, temperature, and pressure to enable precise rack-level hydronics control with lower energy use.

A subnet controller on the HVAC bus disables the compressor during dehumidification to balance humidity control, cooling, and energy use.

Compressor power is compared with a temperature-based expected model to detect refrigerant loss, fouling, and fan faults early.

An external auxiliary duct routes evaporator-cooled air to remote vehicle storage bins, enabling retrofit installation and easier HVAC service.

Computing workloads are used as a heat source, with captured processor heat distributed through a building to improve energy use and add useful output.

An auxiliary controller stores backup application data so a replacement HVAC main controller can auto-load model-specific information without manual entry.

A split HVAC controller and in-room interface let installers select settings remotely and confirm them with visual feedback to avoid wiring errors.

Automatically sensing inserted HVAC wires and testing heating or cooling responses helps verify thermostat installation with fewer user errors.

Assigning controller IDs lets a water heater accept commands from only one active panel, preventing conflicting inputs and sudden temperature changes.

Curved, adjustable louvers spread return and discharge air across the indoor coil to prevent short cycling, cut turbulence, and reduce noise.

When thermostat power or wireless links fail, an HVAC interface module uses stored settings and remote sensor data to maintain safe temperature and humidity.

Automatic fan-driven pressure-drop checking verifies a new HVAC filter, improving replacement timing, efficiency, and equipment life.

Altitude-based airflow and static pressure correction helps HVAC units cut noise, prevent condensate, and improve high-elevation performance.

Location-specific sensor setpoints balance uneven airflow and heat loads to cut cooling energy while keeping equipment within temperature limits.

Mobile-device proximity zones let a thermostat adjust temperature to actual occupancy, avoiding complex programming and wasted energy.

An electronic saturation-compensation loop prevents integrator windup in HVAC extremum seeking control and keeps actuators within limits.

A tabbed HVAC dashboard links humidity, weather, alerts, and help screens to improve control precision, diagnostics, and maintenance.

Dynamic HVAC control adjusts economizer start temperature from real-time load and indoor conditions to capture more cooling hours efficiently.

A two-stage battery-powered HVAC strategy extends stopped-vehicle pre-climatization time while limiting battery discharge and emissions.

Predictive cooling uses workload schedules and thermal inertia to prevent datacenter temperature peaks while cutting cooling energy use.

Real-time outlet temperature feedback adjusts fan speed and operating mode to keep process fluid within a tight target range.

Combining icons and text on the controller display makes airflow settings easier to recognize, re-select, and explain to others.

A base controller plus add-on module lets water heaters gain new features without full controller replacement, cutting cost and retrofit effort.

A data-bus HVAC controller ramps blower airflow to detect cutback onset, improving diagnostics, humidity control, and installation flexibility.

A reset circuit detects abrupt HVAC operating changes and reinitializes extremum seeking control to cut convergence delay and power use.

Water-flow feedback starts or stops the air handler pump and blower to avoid cavitation and prevent cold air from being delivered.

A fan controller cuts evaporator motor voltage when refrigerant flow stops, reducing energy use while maintaining air circulation.

Adaptive control coordinates multiple rooftop units using zone temperature and airflow data to improve ventilation, capacity, and humidity control.

Occupancy-aware climate control uses distributed generator data and thermal storage to cut building energy waste without losing comfort.

A single actuator inside the receptacle releases both lid and tray latches, cutting drawer circuitry, damage risk, and replacement cost.

Sensors, local controllers, and a network controller improve HVAC fault reporting, flexible installation, and energy-efficient operation.

Heartbeat-based subnet monitoring lets HVAC controllers detect inactivity, recover communication, and simplify diagnosis and maintenance.

A controller switches a transport refrigeration compressor between diesel and electric drive based on cargo temperature to cut fuel use and noise.

Extremum seeking and HVAC state logic regulate outdoor air intake without humidity sensors, cutting mechanical cooling demand.

A motor on the slide assembly automates freezer drawer opening while preserving storage volume, heat shielding, and collision protection.

Adjustable droop thresholds delay auxiliary heat until needed, balancing indoor comfort with lower HVAC energy cost.

Periodic monitoring and dynamic strategy adjustment help environmental control balance competing goals while limiting energy use and instability.

Temperature-driven stroke control lets one inverter linear compressor balance freezer and refrigerator cooling while cutting power use.

A touchscreen home screen and layered settings views make complex thermostat controls easier to access, monitor, and adjust.

Reduced initial evaporator fan speed cuts pull-down energy use, then ramps airflow near set-point to maintain cargo cooling.

Manual utility pricing entry lets an HVAC controller shift setpoints during peak-rate periods, cutting energy use without added communication links.

A dedicated quick freezer evaporator and duct intensify cold air for rapid cooling while keeping refrigerator zones separately controlled.

Bidirectional ice maker motor control detects a full ice bin without moving or heating ice, cutting energy use and process complexity.

A finite state controller adjusts outdoor air dampers from thermal signals to cut mechanical cooling load without relying on precise humidity sensing.

A 3-way valve enables simultaneous chamber cooling and refrigerant recovery, improving restart distribution and freezer cycle performance.

A remote user interface and visual indicators help configure one HVAC controller for multiple system types while reducing wiring and setup errors.

A manifest-based memory recovery scheme lets communicating HVAC nodes configure non-communicating devices, easing installation and maintenance.

A bypass expansion path and secondary heat exchange keep refrigerant flow to the compressor stable, improving heating in low outdoor temperatures.

Repeated digit-level detection and changed command recognition shorten indoor unit address setting and improve completion under noise.

A single pressure and temperature sensor in the return header controls multiple cooling elements, cutting sensor count and control complexity.

Return-air temperature feedback lets CRAC units trim compressor or chilled-fluid output, cutting data center cooling energy while holding safe setpoints.

By targeting the loop farthest from pressure setpoint, variable-speed pump control improves coolant flow, temperature stability, and energy use.

Movement-pattern monitoring distinguishes collisions from normal stops, enabling fast furniture motion with rapid deceleration to prevent damage or injury.

When thermostat power or wireless communication fails, an interface module uses remote sensing to keep HVAC equipment operating safely.

A segmented touchscreen HVAC interface replaces operating data with system status when needed, making scheduling and setup easier for non-technical users.

Model-based control balances propane, ethylene, and methane refrigeration loads to maximize LNG facility throughput within operating limits.

A dual evaporator layout and auxiliary fan isolate humidity and odors while giving an enclosed pan its own temperature range.

A sealed modular enclosure uses redundant cooling, airflow control, UPS backup, and fire suppression to cut energy use while supporting Tier 4 reliability.

Actual end-use cooling loads are used to reset chiller, tower, and pump setpoints, cutting energy waste without destabilizing temperatures.

Wireless mesh climate sensors detect harmful rack temperatures and trigger graphical alerts with corrective suggestions to prevent network failures.

Using cationic cotton and anionic dyes, this case enables single-item custom textile patterns with washfast color and minimal dye effluent.

Past occupancy patterns guide room pre-conditioning and air circulation control to improve comfort without wasting energy on empty rooms.