Motor control device and its setting method

Abstract

The control device for motor includes following modules: a logging module possesses a table corresponding to rotation speeds, and the table possesses multiple prearranged values of rotation speed; receiving a control signal of referenced rotation speeds, a control module measures the control signal in order to generate a corresponding referenced measurement value; moreover, the logging module records and stores the referenced measurement value in the table to correspond with one of the prearranged values.

Description

technical field [0001] The invention relates to a control device and its setting method, in particular to a motor control device and its setting method. Background technique [0002] Motors have been widely used to drive various electronic devices such as fans. In order to maintain the performance of the motor, proper control is required to maintain the correct motor speed. [0003] Such as figure 1 As shown, a known motor control device 1 includes a controller 10 , a converter 14 and a rotational speed measuring device 15 . The controller 10 includes an analog-to-digital conversion unit 11, a recording unit 12, and a processing unit 13. The controller 10 controls the operation of a motor 2. The converter 14 converts a speed control signal 141 sent in from the outside by a pulse width A modulation (Pulse Width Modulation, PWM) signal is converted into a voltage signal 111 , and the analog-to-digital conversion unit 11 measures the voltage of the voltage signal 111 and gene...

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Problems solved by technology

[0005] Since the motor 2 is produced, the rotation speed correspondence table 120 is pre-stored in the recording unit 12, and the recording unit 12 is a read only memory (ROM), so the contents of the rotation speed correspondence table 120 cannot be Change again, so when the operating environment of the control device 1 changes (for example, the temperature rises or falls) or when there is an error between the actual operating value of the internal mechanism components and the specification, the converter 14 or the analog-to-digital conversion unit 11 often produces The voltage signal 111 or the voltage value 112 is not the actual operating value predetermined by the user. For example, the highest value of the rotational speed control signal 141 is originally set to make the motor 2 run at the highest speed. However, because the converter 14 internal The mechanism component makes the output voltage signal 111 have an error, which further causes the voltage value 112 read by the speed correspondence table to also have an error, and finally does not correspond to the maximum speed

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