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Sensotronic Brake Control (SBC) is the name given to an innovative electronically controlled brake system which Mercedes-Benz will fit to future passenger car models. Following on from the Mercedes innovations ABS, ASR, ESP® and Brake Assist, this system is regarded as yet another important milestone to enhance driving safety. With Sensotronic Brake Control electric impulses are used to pass the driver’s braking commands onto a microcomputer which processes various sensor signals simultaneously and, depending on the particular driving situation, calculates the optimum brake pressure for each wheel. As a result, SBC offers even greater active safety than conventional brake systems when braking in a corner or on a slippery surface. A high-pressure reservoir and electronically controllable valves ensure that maximum brake pressure is available much sooner. Moreover, the system offers innovative additional functions to reduce the driver’s workload. These include Traffic Jam Assist, which brakes the vehicle automatically in stop-and-go traffic once the driver takes his or her foot off the accelerator. The Soft-Stop function – another first – allows particularly soft and smooth stopping in town traffic.
Mechatronics – a new term is gaining popularity within the automotive industry and is rapidly developing into the catchword of a quiet technological revolution which in many fields stands century-old principles on their head. Mechatronics brings together two disciplines which in many cases were thought to be irreconcilable, namely mechanics and electronics.
Hence automobile functions which hitherto worked purely mechanically and partly with hydraulic assistance will in future be controlled by high-performance microcomputers and electronically controllable actuators. These either replace the conventional mechanical components or else enhance their function. The mechatronic interplay therefore opens up hitherto inconceivable possibilities to further raise the safety and comfort levels of modern passenger cars. For example: it was only thanks to mechatronics that an electronically controlled suspension system which instantly adapts to prevailing conditions when driving off, braking or cornering -- thus providing a totally new driving experience -- became a reality. In 1999 Mercedes-Benz launched this system under the name Active Body Control (ABC) in the flagship CL coupé, thereby signalling the advent of a new era of suspension technology.
This electronically controlled suspension system will quickly be followed by the electronic brake system: Mercedes-Benz and Bosch have teamed up on this benchmark development project which will shortly enter into series production at the Stuttgart automobile brand under the name Sensotronic Brake Control -- or SBC for short.
It turns the conventional hydraulic brake into an even more powerful mechatronic system. Its microcomputer is integrated into the car’s data network and processes information from various electronic control units. In this way, electric impulses and sensor signals can be instantly converted into braking commands, providing a marked safety and comfort gain for drivers.
Recently, automotive industry pays more attention on the improvement of the safety and comfort of their vehicle models. The new car model of Mercedes- Benz SL 500 justifies this, by incorporating the new technological innovations like Active body suspension (ABS), Electronic Stability Program (ESP), Sensotronic brake control (SBC) etc. Sensotronic brake control is an innovative electro hydraulic brake system which gives maximum safety and comfort on braking.
This Seminar illustrates mechanism and performance characteristic of Sensotronic brake control with the aid of the theory and mechanism of a common hydraulic brake system. In SBC, various factors while braking such as wheel speed, braking force for each wheel, steering angle etc are senses by electronic means. With electronic impulses are used to pass drivers braking commands onto a micro computer, which processes various sensor signal simultaneously, and depends on particular driving situation, calculates optimum pressure for each wheel. As a result SBC offers even greater active safety then conventional braking systems when braking in a corner and slippery surface.

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