Truth Tables

Represent combinational logic for decision-making applications

Truth table functions implement combinatorial logic design in a concise, tabular format. Include a truth table inside a Stateflow^® chart or add a Truth Table block directly to your Simulink^® model.

Blocks

Truth Table

Represent logical decision-making behavior with conditions, decisions, and actions

Topics

Use Truth Tables to Model Combinatorial Logic

Express combinatorial logic in tabular form.

Program a Truth Table

Define the logical behavior of a truth table.

View Generated Content for Stateflow Truth Tables

Truth table logic is implemented as flow charts and MATLAB^® functions.

Debug Errors in a Truth Table

Use breakpoints to debug truth tables.

Correct Overspecified and Underspecified Truth Tables

Run diagnostic checks to detect errors in truth table specification.

Map Fault Conditions to Actions by Using Truth Tables

Use truth tables to map fault conditions to their consequent actions.

Related Information

Prevent Algebraic Loop Errors in MATLAB Function and Stateflow Blocks (Simulink)

Featured Examples

Home Climate Control Using the Truth-Table Block

Use the truth table block to control the temperature and humidity using a climate control system. The truth table block defines two possible boolean variables, Hot and Dry. Stateflow® sets these states if input variables reach defined temperature and humidity thresholds. The different state combinations result in different actions. For example, if both Hot and Dry are true, Stateflow executes the actions CoolOn and HumidOn.

Open Model

Detect Faults in Aircraft Elevator Control System

Design a fault detection, isolation, and recovery (FDIR) application for a pair of aircraft elevators controlled by redundant actuators. This model uses the same fault detection control logic as the Avionics subsystem of the Aerospace Blockset™ example HL-20 Project with Optional FlightGear Interface (Aerospace Blockset).