Prevent Breakdowns using Hysteresis | Simulink tutorial #1 - Relay Logic

This video explains one of the most common defensive logic techniques used in real control systems: hysteresis. Tutorial #1 Using the Simulink Relay block as an example, we will explore: Why simple threshold logic can become unstable What ON/OFF chattering is How hysteresis prevents oscillation How relay logic works internally How to build the same behavior using basic Simulink blocks This type of logic is widely used in automotive systems, embedded control, power systems, and many real-world engineering applications. I currently work as a vehicle control systems engineer, and this channel is intended to share practical control logic concepts used in industry through simple simulations and engineering examples. For future engineers. Sincerely, Donghwa Ryu [ 00:00 ] Intro - What Is Hysteresis? [ 00:18 ] A Simple Battery Voltage Example [ 00:45 ] Why Simple Threshold Logic Fails [ 02:12 ] The ON/OFF Chattering Problem [ 02:52 ] Understanding the Unstable Region [ 03:56 ] How Real Systems Prevent Oscillation & Introducing the Relay Block [ 04:52] Relay Logic and Hysteresis Behavior [ 05:56] Relay Hysteresis Example for Off-road Condition [ 06:51] Understanding the Unstable Region & Relay & Hysteresis [ 08:15 ] Getting Started with Simulink [ 13:50 ] Testing the Built-in Simulink Relay Block [ 16:14 ] Building Hysteresis with Basic Blocks [ 21:49 ] Comparing Both Outputs #Simulink #MATLAB #ControlSystems #Hysteresis #RelayLogic #AutomotiveEngineering #ModelBasedDesign