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Model Outlin e Engin e Chassi s Bod y Body Electrica l Engin e Chassi s Steering EPS (Electric Power Steering) EPS (Electric Power Steering) – Motor drives the rack directly Rl T R eso l ver T ype Torque Sensors Steering Gear Unit • Burushless Motor Rotational Angle Type Vehicle Speed Sensing Type G R ti (O ll) ? • Reduction Mechanism [Specifications] Rotational Angle Sensor G ear R a ti o (O vera ll) ? No. of Turns Lock to Lock ? Rack Stroke [mm in.)] ? Model Outlin e Engin e Chassi s Bod y Body Electrica l Engin e Chassi s Steering System Diagram System Diagram i BEAN (Instrument Panel Bus) VGRS ECU Skid Control ECU Eng i ne ECU Gateway ECU J/C No. 1 CAN PS Warning J/C No. 2 Torque ECU DLC3 Ligh t EPS ECU Temp. Sensor P/S Boost Converte r Sensors Battery (12V) EPS Motor Drive (28V) Rotation An g le g Sensor Model Outlin e Engin e Chassi s Bod y Body Electrica l Engin e Chassi s Steering Torque Sensor (Resolver Type) Torque Sensor (Resolver Type) – Torque sensor detects the twist of torsion bar, changes it into the electric signal, and outputs it to EPS ECU Main Shaft (Input Shaft) Torsion Ba r Resolver 1 to EPS ECU l Pinion Shaft (Output Reso l ver 2 Pinion Shaft (Output Shaft) Rack Shaft Model Outlin e Engin e Chassi s Bod y Body Electrica l Engin e Chassi s Steering Torque Sensor (Resolver Type) Torque Sensor (Resolver Type) – Torque sensor consists of resolver 1, 2 and torsion bar – Resolver 1 of rotor portion is fixed to main shaft, resolver 2 of rotor portion is fixed to pinion shaft portion is fixed to pinion shaft . Main Shaft (Input Shaft) Torsion Torsion Bar Resolver 1 (Stator Portion) Resolver 1 (Rotor Resolver 2 (Stator Resolver 2 (R t P ti ) Resolver 1 (Rotor Portion) Pinion Shaft Portion) (R o t or P or ti on ) (Output Shaft) Model Outlin e Engin e Chassi s Bod y Body Electrica l Engin e Chassi s Steering Torque Sensor (Resolver Type) Torque Sensor (Resolver Type) – Resolvers of rotor portion generate a relative angle difference of a twist of the torsion bar Main Shaft (Input Shaft) Resolver 1 (Rotor P o rti o n ) Resolver 2 oo) Pinion Shaft (O t t Sh ft) (Rotor Portion) (O u t pu t Sh a ft) Model Outlin e Engin e Chassi s Bod y Body Electrica l Engin e Chassi s Steering Torque Sensor (Resolver Type) Torque Sensor (Resolver Type) – Characteristic of resolver Exciting Coil Detection Coil 1 4 1 2 13 3 4 2 Model Outlin e Engin e Chassi s Bod y Body Electrica l Engin e Chassi s Steering Torque Sensor (Resolver Type) Torque Sensor (Resolver Type) – Detection method of torque sensor Stator Portion Rotor Portion Stator Portion Signal A Signal B Model Outlin e Engin e Chassi s Bod y Body Electrica l Engin e Chassi s Steering Torque Sensor (Resolver Type) Torque Sensor (Resolver Type) – Detection method of torque sensor Stator Portion Rotor Portion Stator Portion Signal A Signal B Model Outlin e Engin e Chassi s Bod y Body Electrica l Engin e Chassi s Steering Torque Sensor (Resolver Type) Torque Sensor (Resolver Type) – Detection method of torque sensor Stator Portion Rotor Portion Stator Portion Signal A Signal B Model Outlin e Engin e Chassi s Bod y Body Electrica l Engin e Chassi s Steering Torque Sensor (Resolver Type) Torque Sensor (Resolver Type) – One resolvor outputs two signals with which the phase lagged 90 degrees to detect a relative angle Resolver (Rotor Portion) Output Signal (V) il t S i gna l A Signal B Resolver (Stator Pti ) t Signal B AUTO P or ti on ) MANUA L [...]...Model Outline Engine Chassis Engine Chassis Body Body Electrical Steering Torque Sensor (Resolver Type) – Resolver of rotor portion outputs the straight signal, when resolver of stator portion stayed Resolver (Rotor Portion) Output Signal (V) Signal A i l t Signal B t Resolver (Stator Portion) P ti ) Model Outline Engine Chassis Engine Chassis Body Body Electrical Steering Torque Sensor (Resolver . Type) – Resolver of rotor portion outputs the straight signal, when resolver of stator portion stayed Resolver (Rotor Portion) Output Signal (V) il t S i gna l A Signal B Resolver (Stator Pti