Method and device for monitoring an engagement process of an engaging pinion of a starter motor
AssigneeRobert Bosch GmbH
InventorsSimon Casey, Tony Rocco
Life of this patent
Estimating the term…
Abstract
A method for monitoring an engagement process of an engaging pinion of a starter motor for a vehicle drive, in which an armature of the starter motor is moved, includes detecting a magnetic coil signal while current is applied to the magnetic coil of the magnet, in order to obtain a signal profile, particularly a current profile; generating a frequency profile by transforming the signal profile using a time-frequency transform; comparing the frequency profile to at least one reference frequency profile; and monitoring the engagement process based on the comparison.
Claims15
1-14. (canceled)
A method for monitoring an engagement process of an engaging 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 magnetic coil signal when current is applied to a magnetic coil of the magnet, in order to obtain a signal profile;
- generating a frequency profile by transforming the signal profile using a time-frequency transform;
- comparing the frequency profile to at least one reference frequency profile;
- and
- monitoring the engagement process based on the comparison.
A device for monitoring an engagement process of an engaging pinion of a starter motor for a vehicle drive, wherein an armature of the starter motor is moved by a magnet, the device comprising:
- a sensor configured to detect a magnetic coil signal when a current acts on a magnetic coil of the magnet, so as to obtain a signal profile, and
- a processor configured:
- to generate a frequency profile by transforming the signal profile using a time-frequency transform;
- to compare the frequency profile to at least one reference frequency profile;
- and
- to monitor the engagement process based on the comparison.
A device for monitoring an engagement process of an engaging pinion of a starter motor for a vehicle drive, wherein an armature of the starter motor is moved by a magnet, the device comprising:
- a sensor configured to detect a magnetic coil signal when a current acts on a magnetic coil of the magnet, so as to obtain a signal profile, and
- a processor configured:
- to generate an observation profile by observation of the signal profile;
- to compare the observation profile to at least one reference frequency profile;
- and
- to monitor the engagement process based on the comparison.
Dependencies are inferred from the claim text.