Motor current detection method and system, stirrer and storage medium
A technology of motor current and detection method, which is applied in the direction of measuring current/voltage, measuring device, measuring electric variable, etc., can solve the problem of high cost of current detection, and achieve the effect of saving detection cost and saving the space of the overall structure
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[0053] Example one
[0054] See figure 1 , Is a flowchart of the motor current detection method provided by the first embodiment of the present invention. In this embodiment, the motor to be tested is electrically connected to a master MCU and a slave MCU, and the slave MCU and the motor to be tested are electrically connected With a thyristor, the method includes the steps:
[0055] Step S10, the main MCU performs zero point detection on the motor to be tested in real time, calculates the time delay time according to the current rotation speed and target rotation speed of the motor to be tested, and controls the The thyristor is in the cut-off state and starts timing to get the timing time;
[0056] Specifically, the main MCU detects the zero-crossing point in each phase of the motor in real time through the zero-crossing detection circuit, and when it determines the current zero-crossing point of the motor to be tested, triggers a timer to achieve the timing effect;
[0057] Step ...
Example Embodiment
[0068] Example two
[0069] See figure 2 , Is a flowchart of the motor current detection method provided by the first embodiment of the present invention. In this embodiment, the motor to be tested is electrically connected to a master MCU and a slave MCU, and the slave MCU and the motor to be tested are electrically connected With a thyristor, the method includes the steps:
[0070] Step S11, the main MCU performs zero point detection on the motor to be tested in real time, calculates the time delay time according to the current rotation speed and target rotation speed of the motor to be tested, and controls the The thyristor is in the cut-off state and starts timing to get the timing time;
[0071] Step S21: When the zero-crossing point of the motor to be tested is determined, the main MCU sends a shutdown instruction to the thyristor, and when the thyristor receives the shutdown instruction, the motor to be tested is performed Power off
[0072] Wherein, the shutdown instructio...
Example Embodiment
[0081] Example three
[0082] See image 3 , Is a flowchart of the motor current detection method provided by the third embodiment of the present invention. In this embodiment, the motor to be tested is electrically connected to a master MCU and a slave MCU, and the slave MCU and the motor to be tested are electrically connected With a thyristor, the method includes the steps:
[0083] Step S12, the main MCU performs zero point detection on the motor under test in real time, and when it determines the zero crossing point of the motor under test, starts timing to obtain the timing time;
[0084] Step S22, when the zero-crossing point of the motor to be tested is determined, the main MCU sends a shutdown instruction to the thyristor, and when the shutdown instruction is received by the thyristor, the motor to be tested is performed Power off
[0085] Step S32, when the master MCU determines that the timing time is equal to a time threshold, correspondingly send an excitation signal an...
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