General Overview
The DSC system is a Driving Stabilization System and offers the following advantages
- DSC optimizes driving stability when pulling away, accelerating, braking and coasting.
- DSC recognizes and reduces unstable driving conditions such as understeering or oversteering.
- DSC improves traction, especially with Dynamic Traction Control (DTC)
Within the limitations of the laws of physics, DSC helps to keep the vehicle on a safe course.
To do this, DSC must know the following parameters regarding the vehicles driving dynamics
- Yaw rate as a measure of rotary movement of the vehicle around the vertical axis
- Lateral acceleration
- Road speed
- Longitudinal acceleration
In addition, the driver's intentions are recognized via input from
- Steering angle sensor
- Brake pressure sensor
- Throttle setting/ accelerator pedal position
The values are used to establish the actual condition in which the vehicle is currently moving and to compare these values with those calculated by the DSC control module. If the actual values differ from the calculated values, DSC is activated and initiates brake actions or engine control functions.
Advantages
The DSC system counters all dynamically unstable driving conditions within the physical limitations dictated by the laws of physics, to enhance driving comfort and safety.
LDM Overview
The LDM is a control module that is used for drivetrain and brake coordination purposes, plus provides significant improvement with regard to automatic cruise control (ACC or DCC) with a general control function capability ranging from requesting acceleration to requesting braking (integrated function).
Interface: PT-CAN
The LDM serves two primary functions
Scheme 1
- Variant handling - LDM functions are configuration dependent (coding-relevant function)
- LDM safety functions are ensured by a central monitoring and redundancy check.
