Methods and apparatus to detect a stall of a stepper motor
AssigneeTexas Instruments Incorporated
InventorsGanapathi Shankar, Varun Garg, Venkata Naresh Kotikelapudi
Life of this patent
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Abstract
An example apparatus includes: memory including machine-readable instructions; programmable circuitry configured to execute the machine-readable instructions of the memory configured to: determine a first value of power transferred to a stepper motor during a first operation of the stepper motor; determine a second value of power transferred to the stepper motor during a second operation of the stepper motor; determine a load angle of power delivered by the stepper motor during the first operation and second operation of the stepper motor based on the first value, the second value, and a stall power; and compare the load angle to a stall threshold to detect a stall of the stepper motor.
Claims20
An apparatus comprising:
- memory including machine-readable instructions;
- programmable circuitry configured to execute the machine-readable instructions, the machine-readable instructions to cause the programmable circuitry to at least:
- determine a first value of power transferred to a stepper motor during a first operation of the stepper motor;
- determine a second value of power transferred to the stepper motor during a second operation of the stepper motor;
- determine a load angle of power delivered by the stepper motor during the first operation and second operation of the stepper motor based on the first value, the second value, and a stall power;
- and
- compare the load angle to a stall threshold to detect a stall of the stepper motor.
At least one non-transitory computer readable storage medium comprising instructions that, when executed, cause programmable circuitry to at least:
- determine a first value of power transferred to a stepper motor during a first operation of the stepper motor;
- determine a second value of power transferred to the stepper motor during a second operation of the stepper motor;
- determine a load angle of power delivered by the stepper motor during the first operation and second operation of the stepper motor based on the first value, the second value, and a stall power;
- and
- compare the load angle to a stall threshold to detect a stall of the stepper motor.
A method comprising:
- determining a first value of power transferred to a stepper motor during a first operation of the stepper motor;
- determining a second value of power transferred to the stepper motor during a second operation of the stepper motor;
- determining a load angle of power delivered by the stepper motor during the first operation and second operation of the stepper motor based on the first value, the second value, and a stall power;
- and
- comparing the load angle to a stall threshold to detect a stall of the stepper motor.
Dependencies are inferred from the claim text.