Method for setting a polyphase electric stepper motor
First Claim
1. A method for setting an electric motor with respect to a reference position corresponding to a mechanical stop transmitted, through a gear system of a reduction gear, to an electric multi-phase motor with sequential power supply for step-by-step operation, the method comprising reading in a determined time window, during a sequence of non-feeding of at least one of the phases of the motor, a change in induced voltage Δ
- Ti in a phase that is not fed and comparing said change with a standard change Δ
Ts, in order to stop feeding of said motor on the sequence in the event of an offset.
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Abstract
A method for setting an electric motor, which includes, during a non-powering sequence of at least one of the motor phases, measuring on a predetermined time window, the induced voltage (Ti) in the non-powered phase and in comparing its mean value to a threshold value (Ts) to stop powering of the motor on the current sequence if the measured mean value is less than the threshold value.
22 Citations
8 Claims
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1. A method for setting an electric motor with respect to a reference position corresponding to a mechanical stop transmitted, through a gear system of a reduction gear, to an electric multi-phase motor with sequential power supply for step-by-step operation, the method comprising reading in a determined time window, during a sequence of non-feeding of at least one of the phases of the motor, a change in induced voltage Δ
- Ti in a phase that is not fed and comparing said change with a standard change Δ
Ts, in order to stop feeding of said motor on the sequence in the event of an offset. - View Dependent Claims (2)
- Ti in a phase that is not fed and comparing said change with a standard change Δ
- 3. A method for setting an electric motor with respect to a reference position corresponding to a mechanical stop transmitted through a gear system of a reduction gear and an electric multi-phase motor with sequential power supply for step-by-step operation, the method comprising measuring in a determined time window, during a sequence of non-feeding of at least one of the phases of the motor, wherein an induced voltage Ti in the phase that is not fed and comparing an average value with a threshold value Ts, in order to stop the feeding of said motor on the sequence in progress if the average measured value is lower than said threshold value.
Specification