Conduction control table automatic generation instrument based on Hall signal and detection method thereof

Abstract

The invention provides a conduction control table automatic generation instrument based on a Hall signal and a detection method thereof. A display screen and a key control module of the instrument are connected with a main control chip module; a Hall element is connected with the main control chip module; a three-phase port module is connected with the main control chip module through a voltage sensor circuit and a filter circuit; and a power module is connected with the display screen, the main control chip module and the Hall element. The detection method comprises the following steps: 1) starting the instrument after connecting each interface of the instrument; 2) reading signals of a voltage Hall position sensor; 3) reading a voltage polarity signal output by the voltage sensor circuit through the main control chip module; 4) judging whether judgment of a three-phase conduction mode is finished; 5) outputting Hall truth table statements; 6) judging whether six different Hall states are detected; and 7) ending the measurement process, the instrument jumping to an end state and keeping screen output. A conduction control Hall truth table is generated based on the input signal of the Hall element and line voltage input signal.

Description

[0001] Technical field: [0002] The invention belongs to the field of motor control, and in particular relates to an automatic generator of a conduction control meter based on a Hall signal and a detection method thereof. [0003] Background technique: [0004] At present, after the domestic brushless DC motor leaves the factory, the user needs to complete the measurement of the Hall phase sequence control table and generate the phase sequence conduction table. However, the measurement of the existing Hall elements is mostly done in the laboratory, and the test environment is relatively limited. For environments such as motor maintenance and on-site debugging of the motor workplace, the measurement cannot be completed in a timely and convenient manner. Moreover, most of the current measurements need to manually observe the waveform first, and then complete the drawing of the Hall truth table, which has poor detection accuracy and is time-consuming and laborious. [0005] In a...

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Problems solved by technology

The first method needs to add a motor drive power supply, and the effective measurement can only be performed when the rotor reaches a stable state. Every time the measurement is completed, the power line needs to be reconnected to complete the change of the energized phase. The operation is cumbersome and the measurement conditions are harsh. It is not suitable for rapid Maintenance and debugging; the second method needs to open the motor casing and observe the internal rotor position to manually determine the conduction phase of the three-phase motor in the current Hall state, which is even more difficult to implement, and requires a high degree of professionalism for the measurement personnel. It is not convenient for practical application

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