Traction Control Strategy

How it works: Traction Control Strategy

Find out how your system works with the 3D – Intelligence technology.

GRIPONE include several control strategies. All of them are connected to the 3D-INTELLIGENCE control system, but each strategy works following a specific algorithm.

If you want to describe the traction control strategy in few words, you can say that the user fixs a target value of spinning (in GRIPONE S3 it is rapresented by SLIP TARGET %). When the spinning of rear tyre is greater than this value, the strategy start to reduce the power. When the spinning of rear tyre come back to normal (under the value) the strategy stop to reduce the power.

Itself the strategy of traction control looks quite simple but the reality is a bit different. The system uses a “target” to estimate the safe amount of spinning of rear tyre. The target value, used from traction control, is not fixed: it change 200 times per second, based on many parameters like tyre load, leaning angle, speed, drag force. The 3D-INTELLIGENCE elaborate signals from speed sensors and from the inertial platform IMU to estimate the condition of the bike (like leaning angle, load on tyre, drag, etc.) and gives the informations to the traction control strategy. The strategy itself uses the informations to change properly the target value.

The target value changes according the condition of the bike. When the conditions make the spinning (of rear tyre) dangerous, the target value drop down. When the conditions make the spinning (of rear tyre) useful to accelerate, the target value increase. The reduction of power (applied by the traction control) is calculated by the difference between target value and spinning value. Bigger is the “error” and bigger is the reduction of power.