Method for operating a hand-guided machine tool, and hand-held machine tool

A method for operating a hand-guided machine tool connectable to a tool, with a drive for driving the tool, a control device and at least one sensor being provided, the sensor having a distance from a reference point associated with the machine tool or the tool greater than or equal to zero, the method comprising the steps of:

• detecting at least one linear acceleration value (ax, ay, az) via the at least one sensor;
• subtracting a gravitational acceleration from the at least one linear acceleration value (ax, ay, az) to form at least one adjusted linear acceleration value (axkorr, aykorr, azkorr);
• integrating the at least one adjusted linear acceleration value (axkorr, aykorr, azkorr) into at least one speed value;
• integrating the at least one speed value into at least one distance value (sx, sy, sz);
• multiplying the at least one speed value by a time constant (τ) to form at least one further distance value;
• adding the at least one distance value to the at least one further distance value to form at least one total distance value (sx, sy, sz);
• filtering at least one of the linear acceleration values or adjusted linear acceleration values (ax, ay, az, axkorr, aykorr, azkorr) or at least one of the speed values;
• comparing the at least one total distance value (sx, sy, sz) with a defined limit value;
• and
• initiating a predefined action when the at least one total distance value exceeds the defined limit value.