Method and device for monitoring a meshing process of a meshing pinion of a starter motor
AssigneeRobert Bosch GmbH
InventorsSimon Casey, Tony Rocco
Life of this patent
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Abstract
A method for monitoring a meshing process of a meshing pinion of a starter motor for a vehicle drive, in which an armature of the starter motor is moved by a magnet, has the following steps: detecting a solenoid signal when a solenoid of the magnet is energized in order to obtain a signal profile, in particular a current profile; generating a differential profile by differentiating the signal profile; determining zero crossings in the differential profile; and monitoring the meshing process on the basis of the determined zero crossings.
Claims14
A method for monitoring a meshing process of a meshing pinion of a starter motor for a vehicle drive, in which an armature of the starter motor is moved by a magnet, comprising:
- detecting a solenoid signal when a solenoid of the magnet is energized, and obtaining a signal profile of the solenoid signal, the signal profile representing a current profile;
- generating a differential profile by differentiating the signal profile;
- determining (i) a number of zero crossings in the differential profile and (ii) a course direction of the ascertained zero crossing;
- and
- determining a curve of the signal profile based on the number and the course direction of the zero crossings, wherein a quality of the meshing process is determined based on the curve of the signal profile.
A method for monitoring a meshing process of a meshing pinion of a starter motor for a vehicle drive, in which an armature of the starter motor is moved by a magnet, comprising:
- detecting a solenoid signal when a solenoid of the magnet is energized, and obtaining a signal profile of the solenoid signal, the signal profile representing a current profile;
- observing the signal profile to generate an observation profile;
- determining (i) a number of zero crossings in the observation profile and (ii) a course direction of the ascertained zero crossing;
- and
- determining a curve of the signal profile based on the number and the course direction of the zero crossings, wherein a quality of the meshing process is determined based on the curve of the signal profile.
A device for monitoring a meshing process of a meshing pinion of a starter motor for a vehicle drive, in which an armature of the starter motor is moved by a magnet, comprising:
- a sensor configured to (i) detect a solenoid signal when a solenoid of the magnet is energized, and (ii) generate a signal profile of the solenoid signal, the signal profile representing a current profile;
- and
- a processor configured to:
- generate a differential profile by differentiating the signal profile;
- determine (a) a number of zero crossings in the differential profile and (b) a course direction of the ascertained zero crossing;
- and
- determine a curve of the signal profile based on the number and the course direction of the zero crossings, wherein a quality of the meshing process is determined based on the curve of the signal profile.
A device for monitoring a meshing process of a meshing pinion of a starter motor for a vehicle drive, in which an armature of the starter motor is moved by a magnet, comprising:
- a sensor configured to (i) detect a solenoid signal when a solenoid of the magnet is energized, and (ii) generate a signal profile of the solenoid signal, the signal profile representing a current profile;
- and
- a processor configured to:
- observe the signal profile to generate an observation profile;
- determine (a) a number of zero crossings in the observation profile and (b) a course direction of the ascertained zero crossing;
- and
- determine a curve of the signal profile based on the number and the course direction of the zero crossings, wherein a quality of the meshing process is determined based on the curve of the signal profile.
Dependencies are inferred from the claim text.