Method for detecting a blocking of a rotor of a motor driving an actuator member
AssigneeSafran Electronics & Defense
InventorsBadr Mansouri, Kamal Aouchiche
Life of this patent
Estimating the term…
Abstract
A method of detecting blocking of a rotor of a motor driving an actuator member with movement in translation between a first abutment and a second abutment, the method comprising the steps of, during an angular movement of the rotor, estimating at least a position (X) of the actuator member relative to the two abutments, a travel direction of the actuator member relative to the two abutments, and also a travel speed (V) of the actuator member; and on the basis at least of the estimated position of the actuator member, of the estimated travel direction of the actuator member, and of the estimated travel speed of the actuator member, detecting blocking of the rotor.
Claims13
A method of detecting blocking of a rotor of a motor driving an actuator member to move in translation between first and second abutments that are respectively representative of first and second angular positions of the rotor, the method comprising the steps of:
- in a first step, during angular movement of the rotor, estimating at least a position of the actuator member relative to the two abutments, a travel direction of the actuator member relative to the two abutments, and also a travel speed of the actuator member;
- in a second step, on the basis at least of the estimated position of the actuator member, of the estimated travel direction of the actuator member, and of the estimated travel speed of the actuator member, detecting:
- blocking of the rotor due to the actuator member reaching the first abutment;
- or
- blocking of the rotor due to the actuator member reaching the second abutment;
- or
- blocking of the rotor due to seizing during travel of the actuator member towards the first abutment;
- or
- blocking of the rotor due to seizing during travel of the actuator member towards the second abutment;
- the second step being implemented on the basis of a setpoint data for the mechanical torque to be delivered to the actuator member, said setpoint data being positive and must be less than a maximum mechanical torque threshold when the actuator member is moving towards one of the abutment and said setpoint data being negative and must be greater than a minimum mechanical torque threshold when the actuator member is moving towards the other of the abutment, these mechanical torque thresholds being predetermined so as to avoid mechanical damage to the motor or to the actuator member.
A method of detecting blocking of a rotor of a motor driving an actuator member to move in translation between first and second abutments that are respectively representative of first and second angular positions of the rotor, the method comprising the steps of:
- during angular movement of the rotor, estimating at least a position of the actuator member relative to the two abutments, a travel direction of the actuator member relative to the two abutments, and also a travel speed of the actuator member;
- on the basis at least of the estimated position of the actuator member, of the estimated travel direction of the actuator member, and of the estimated travel speed of the actuator member, detecting:
- blocking of the rotor due to the actuator member reaching the first abutment;
- or
- blocking of the rotor due to the actuator member reaching the second abutment;
- or
- blocking of the rotor due to seizing during travel of the actuator member towards the first abutment;
- or
- blocking of the rotor due to seizing during travel of the actuator member towards the second abutment,
- wherein blocking of the rotor due to seizing during travel of the actuator member towards the second abutment is detected:
- if the position of the actuator member is substantially less than the position of the second abutment and substantially greater than the position of the first abutment;
- and
- if an absolute value of the travel speed of the actuator member is less than a predetermined minimum travel speed threshold;
- and
- if an absolute value of the difference between predetermined maximum torque threshold and torque setpoint for transmitting to the actuator member is substantially zero for at least a predetermined time interval;
- and
- if an order to move the actuator member towards the second abutment is active, which order is representative of a travel direction of the actuator member.
A method of detecting blocking of a rotor of a motor driving an actuator member to move in translation between first and second abutments that are respectively representative of first and second angular positions of the rotor, the method comprising the steps of:
- during angular movement of the rotor, estimating at least a position of the actuator member relative to the two abutments, a travel direction of the actuator member relative to the two abutments, and also a travel speed of the actuator member;
- on the basis at least of the estimated position of the actuator member, of the estimated travel direction of the actuator member, and of the estimated travel speed of the actuator member, detecting:
- blocking of the rotor due to the actuator member reaching the first abutment;
- or
- blocking of the rotor due to the actuator member reaching the second abutment;
- or
- blocking of the rotor due to seizing during travel of the actuator member towards the first abutment;
- or
- blocking of the rotor due to seizing during travel of the actuator member towards the second abutment,
- wherein blocking of the rotor due to seizing during travel of the actuator member towards the first abutment is detected:
- if the position of the actuator member is substantially less than the position of the second abutment and substantially greater than the position of the first abutment;
- and
- if an absolute value of the travel speed of the actuator member is less than a predetermined minimum travel speed threshold;
- and
- if an absolute value of the difference between predetermined minimum torque threshold and torque setpoint for transmitting to the actuator member is substantially zero for at least a predetermined time interval, the predetermined minimum torque threshold being a negative value;
- and
- if an order to move the actuator member towards the first abutment is active, which order is representative of a travel direction of the actuator member.
Dependencies are inferred from the claim text.