Dc brushless motor controller includes power conversion circuit, microcontroller (MCU or DSP or other processors) and signal input and output circuit, the controller store the controller's work program, it can accurately control, through the detection of DC motor position sensor, Effective control of the motor (such as motor start and stop, speed control, direction control, displacement control) control dynamic real-time monitoring, effective protection of the motor, to solve the motor dynamic real-time monitoring, inaccurate control, unreliable protection of the technical problems.
The driver mainly includes a drive circuit that is a power amplifier circuit, which amplifies the control signal output from the controller to drive the motor, and there are overcurrent, overvoltage and undervoltage protection circuits in the general drive circuit.
Photoelectric encoder is the most widely used DC motor position detection sensor at present. It is a kind of sensor that converts the mechanical geometric displacement on the output shaft into pulse or digital quantity by photoelectric conversion.
The photoelectric encoder is composed of grating disk and photoelectric detection device. The grating disk is in a certain diameter
A number of rectangular holes are opened equally on the round plate. Because the optical code disc is coaxial with the motor, when the motor is rotating, the grating disc rotates with the motor at the same speed, and the detection device composed of electronic components such as light-emitting diodes detects and outputs a number of pulse signals, which can be reversed by calculating the number of output pulses per second by the photoelectric encoder
Map the current motor speed. In addition, in order to determine the direction of rotation, the code disk can also provide two pulse signals with a phase difference of 90o.