Linear brake control circuit for brushless DC motor controller

Abstract

The invention discloses a linear brake control circuit for a brushless DC motor controller. The linear brake control circuit comprises a single-chip microcomputer main control circuit, a brushless motor, a storage battery, a rotary handle, a drive circuit, a power tube driver, a steering device, a current limiting and overcurrent detection circuit, a rotary handle brake signal, an under-voltage detection circuit, a speed limiting circuit and a regulated power supply, wherein the brushless motor controlled through the steering device runs; the current limiting and overcurrent detection circuitconveys a signal to the single-chip microcomputer main control circuit when detecting that load is increased, current is increased or the current cannot be controlled; a hall signal detection circuitcan detect a position signal of a hall signal and achieves phase commutation through the single-chip microcomputer main control circuit; and the rotary handle is the rotary handle with a linear brakehandle. The linear brake control circuit is scientific and reasonable in structure and safe and convenient to use, detection of work of the motor is facilitated, braking is facilitated, the brake force can be controlled according to the requirements, the battery is protected, the service life of the battery and the motor is prolonged, and different circuit devices of a whole system can be providedwith required voltage and current.

Description

technical field [0001] The invention relates to the technical field of brushless motor brakes, in particular to a linear brake control circuit for a DC brushless motor controller. Background technique [0002] In recent years, with the rapid development of society and the destruction of our living environment, people's awareness of environmental protection and resource conservation has been continuously improved. Under such opportunities, electric vehicles have received great attention and flourished. Before that, there were brush DC motors. It occupies a dominant position in the electric drive device. The brushed motor is commutated by the cooperation of the mechanical commutator and the brush, which is particularly easy to cause wear and tear, and the components are also relatively complicated. At the same time, the operation stability is poor. Now the brushless DC motor is used in many applications. In the industry, it has the advantages of brushed DC motors, no motor c...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a linear braking control circuit for a brushless DC motor controller, which can effectively solve the problems of the current linear braking control circuit for a brushless DC motor controller proposed in the above-mentioned background technology. For a brushless DC motor, it cannot To provide the required voltage and current for different circuit devices in the whole system, the voltage and current cannot be divided well, which reduces the work efficiency. Secondly, there is generally no speed limit and undervoltage design, so the controller cannot be forced to stop working when the voltage is unstable. , so as to protect the battery, reduce the service life of the battery and the motor, and most of them use electric brakes, and the braking force cannot be controlled according to user requirements.

Images