Method capable of feeding back locked-rotor signal of claw-pole stepping motor

A stepper motor and claw pole technology, which is applied in the direction of motor generator control, electrical components, and control/drive circuit connection, etc., can solve the problem that stepper motors do not have a stall feedback function, affect user experience, and have complex structures and other problems, to achieve the effect of eliminating over-step rotation, simplifying the structure, and halving the number of coils

Pending Publication Date: 2021-06-22
ZHONGSHAN HUILIPU MOTOR
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Problems solved by technology

[0002] Existing stepper motors do not have a stall feedback function, so when controlling the swing angle of the damper, especially the control of the swing angle of the air-conditioning damper, the stepper motor needs to execute the set number of rotation pulses, so when the damper is not fully opened When the close command is received under the condition that the damper is completely closed, the remaining rotation pulses still need to be executed, or when the opening command is received when the damper is not completely close

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  • Method capable of feeding back locked-rotor signal of claw-pole stepping motor

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Embodiment Construction

[0018] A further detailed description will be made below in conjunction with the accompanying drawings and embodiments of the present invention:

[0019] Such as figure 1 As shown, a method that can feed back the locked-rotor signal of the claw-pole stepping motor, the steps are as follows:

[0020] Step a, the control device 2 sends a damper opening or closing control signal to the stepper motor subdivision drive circuit 3;

[0021] Step b, the stepper motor subdivision drive circuit 3 sends a PWM modulation signal to the stepper motor body 1 to generate a sine wave drive current to make the stepper motor body 1 rotate, and detect the operating current of the stepper motor body 1; wherein the stepper motor body 1 is a two-phase stepping motor, and the stepping motor subdivision drive circuit 3 converts the original unipolar pulse mode to generate a similar sine wave current to drive the main body of the stepping motor 1, so as to realize the smooth rotation and opening and c...

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Abstract

The invention discloses a method capable of feeding back a locked-rotor signal of a claw-pole stepping motor. The stepping motor is provided with a stepping motor subdivision driving chip, when an air door opening or closing instruction is received, the stepping motor subdivision driving chip outputs a subdivision PWM modulation signal to a stepping motor coil, so that the stepping motor obtains a sine wave current, and gentle rotation is achieved. Meanwhile, when it is detected that the working current of the stepping motor is larger than the maximum set value, an air door is completely opened or closed, so that rotation of the stepping motor is blocked, the stepping motor subdivision driving circuit stops outputting the PWM modulation signal to the stepping motor, and vibration noise generated by stepping of the air door motor is eliminated; and by adopting the method, the number of coils in the motor is halved, the structure of a user main control board is simplified, and the manufacturing cost is reduced.

Description

[technical field] [0001] The invention relates to a method capable of feeding back a locked-rotor signal of a claw pole type stepping motor. [Background technique] [0002] Existing stepper motors do not have the stall feedback function, so when controlling the swing angle of the damper, especially the control of the swing angle of the air-conditioning damper, the stepper motor needs to execute the set number of rotation pulses, so when the damper is not fully opened When the closing command is received under the condition that the damper is completely closed, the remaining rotation pulses still need to be executed, or when the opening command is received when the damper is not completely closed, the remaining rotation pulses still need to be executed after the damper is fully opened, As a result, the motor appears over-step rotation; at the same time, most of the existing stepping motors used for air-conditioning dampers are driven by rectangular pulse waves, and the rotati...

Claims

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Application Information

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IPC IPC(8): H02P8/36H02P8/12H02K11/33
CPCH02P8/36H02P8/12H02K11/33
Inventor 蓝小荔周念祖尹传胜吴招军王守生王宇
Owner ZHONGSHAN HUILIPU MOTOR
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