找回密码
 立即注册

QQ登录

只需一步,快速开始

打印 上一主题 下一主题
开启左侧

[N76E003] Open-Loop BLDC Motor Control

[复制链接]
跳转到指定楼层
楼主
admin 发表于 2023-10-8 10:44:03 | 只看该作者 回帖奖励 |正序浏览 |阅读模式
  • Application: This example code based on N76E003 for implementing the open-loop BLDC motor controlled
  • BSP Version: N76E003_BSP_Keil_C51_V1.0.6
  • Hardware: NuTiny-N76E003
In this example code, the NuMicro 8051 N76E003 series is used as an example. Based on PWM and GPIO interrupt of N76E003, it can implement open-loop Brushless DC Motor (BLDC Motor). Pulse Width Modulation (PWM) is a technique to change the output energy by modifying the duty cycle. It can apply to modify the motor speed, control valve … etc.

BLDC Motor rectifies by electric device instead of traditional brush. It can increase the reliability and endurance. The advantage of BLDC Motor is smaller volume, higher reliability, and higher endurance than same rated power brush DC Motor. The disadvantage of BLDC Motor is need the electric device like microcontroller for controlling.

Basic BLDC Motor is equipped with the hall sensor to feedback the signal of rotor state. Microcontroller will output the 6 sets PWM control signal for 3 sets MOS upper/lower-arms to control 3-phase motor. And microcontroller needs 3 GPIO for receiving hall signal for detecting the rotor state.

Open-loop controller is a simple mathematical model of system. Because there is no feedback signal to modify itself to ideal state automatically. The robustness of open-loop system is worse than close-loop system. However, if the system does not need the high accuracy, it can implement on open-loop controller.

This example code is based on open-loop controller to control the BLDC motor and modified the motor speed by variable resistor.

You can download the sample code at https://www.nuvoton.com/resource-downlo ... 1220154457
分享到:  QQ好友和群QQ好友和群 QQ空间QQ空间 腾讯微博腾讯微博 腾讯朋友腾讯朋友
收藏收藏 顶 踩
牛卧堂
回复

使用道具 举报

沙发
匿名  发表于 2023-10-14 12:20:37
这里Open-loop 开环是啥意思,哪一个环是开环?
回复 支持 反对

使用道具

高级模式
B Color Image Link Quote Code Smilies |上传

本版积分规则

新唐MCU