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MDPS Mando System Copyright by Hyundai Motor Company All rights reserved MDPS System Structure PCM(ECM) ENG speed Torque Sensor Manual Transaxle Vehicle speed MDPS Control Module • SAS Eliminated • Vehicle speed direct from transaxle Reduction gear (Plastic worm wheel) EPS Motor MDPS Torque Sensor Contact type [Potentiometer] Voltage cross type Main, Sub signals have opposite phase each other Non-Contact type [Linear Hall] Voltage straight type Main, Sub signals have same phase each other MDPS Torque Sensor Hall IC Input shaft Rotor Rotor Stators Hall Sensor Stator [Internal Structure] S N S N S N S [Sensor principle] MDPS Engine Speed & Vehicle Speed Signal PCM(ECM) Eng speed MDPS Control Module Manual Transaxle Vehicle speed Engine speed from PCM(ECM) Vehicle speed from PCM(ECM) MDPS Power Supply & Warning Lamp Engine room junction box (‘MDPS 50A’) MDPS Warning Lamp • IG ON, Engine Stop: Keep ON I/P junction box (‘MDPS 10A’) • Engine Starting : Turns off 2sec later after engine starting in normal condition MDPS Motor • Brush-less type DC motor (vs brush type) - Small size and light weight - Higher rotating speed - More complicated control is required (higher cost) • Max Current: 35A • Max Torque: 1.95Nm • Max Output: 205W Coil Permanent magnet Permanent magnet Stator MDPS MDPS Control Module • System Supplier: MANDO • Thermister to detect the temperature is embedded in control module (Max 120 Celsius) MDPS Communication ... Sub signals have same phase each other MDPS Torque Sensor Hall IC Input shaft Rotor Rotor Stators Hall Sensor Stator [Internal Structure] S N S N S N S [Sensor principle] MDPS Engine Speed & Vehicle... Motor MDPS Torque Sensor Contact type [Potentiometer] Voltage cross type Main, Sub signals have opposite phase each other Non-Contact type [Linear Hall] Voltage straight type Main, Sub signals have... Eng speed MDPS Control Module Manual Transaxle Vehicle speed Engine speed from PCM(ECM) Vehicle speed from PCM(ECM) MDPS Power Supply & Warning Lamp Engine room junction box ( MDPS 50A’) MDPS Warning