Controller for DC brushless motor integrated with a high voltage control system
First Claim
1. a controller for a direct current brushless motor connected to a high voltage control system, comprisinga microprocessor;
- an input/output interface circuit connected between said high voltage control system and said microprocessor;
a rotor position sensing circuit;
an integrated power module;
a current-sensing circuit for sensing current flowing through the motor; and
a power source circuit for supplying power to said microprocessor, said integrated power module, said input/output interface circuit, said current-sensing circuit, and said rotor position sensing circuit;
whereinsaid input/output interface circuit is a step-down circuit for transforming high voltage alternating current control signal into a low-voltage direct current control signal;
an input end of said rotor position sensing circuit is connected to an output end of said integrated power module;
an output end of said rotor position sensing circuit is connected to an input end of said microprocessor;
an input end of said current-sensing circuit is connected to an output end of the integrated power module;
an output end of the current-sensing circuit is connected to an input end of said microprocessor; and
said step-down rectifying circuit comprises a photoelectric isolation means.
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Accused Products
Abstract
Taught herein is a controller for a direct current brushless motor connected to a high voltage control system, comprising a microprocessor and an input/output interface circuit connected between the high voltage control system and the microprocessor; wherein the input/output interface circuit is a step-down circuit for transforming a high voltage control signal into a low-voltage control signal. The controller enables the high voltage control system to cooperate with motor, therefore a user is not necessary to design a new high voltage control system when replacing the conventional AC motor with the DC brushless motor, which saves time, and reduces cost.
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Citations
7 Claims
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1. a controller for a direct current brushless motor connected to a high voltage control system, comprising
a microprocessor; -
an input/output interface circuit connected between said high voltage control system and said microprocessor; a rotor position sensing circuit; an integrated power module; a current-sensing circuit for sensing current flowing through the motor; and a power source circuit for supplying power to said microprocessor, said integrated power module, said input/output interface circuit, said current-sensing circuit, and said rotor position sensing circuit; wherein said input/output interface circuit is a step-down circuit for transforming high voltage alternating current control signal into a low-voltage direct current control signal; an input end of said rotor position sensing circuit is connected to an output end of said integrated power module; an output end of said rotor position sensing circuit is connected to an input end of said microprocessor; an input end of said current-sensing circuit is connected to an output end of the integrated power module; an output end of the current-sensing circuit is connected to an input end of said microprocessor; and said step-down rectifying circuit comprises a photoelectric isolation means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification