Preface After discussing all the mathematical transformations, we come to the final step of FOC control. First, let’s take a look at the Three Phase Inverter shown in the diagram below, which is generally included in the motor driver. The green box typically represents the MCU control calculation. The final complete FOC algorithm The physical […]
Theory For Field Oriented Control -4 Read More »
Preface In the previous section, we discussed the decomposition of feedback signals. In this section, we will delve into the introduction of input signals. PWM to SPWM We need to drive a three-phase inverter circuit, and if we use only switching, we will get a control signal similar to a 6-step square wave, which is
Theory For Field Oriented Control -3 Read More »
Preface In the previous chapter, we introduced the types of motors and briefly described their control methods. In this chapter, we will delve into the mathematical model and FOC control method in depth Control state Here you can refer to the dynamic diagram of the left image, where it can be seen that different current
Theory For Field Oriented Control -2 Read More »
Preface We will be discussing the ‘Y-type winding brushless DC motor’, and will explain the motor type, principle of rotation, control methods, theoretical control, and step-by-step implementation. are shown in the following figure. Principle of Motor Rotation The two circular magnets in the figure below will rotate due to the rotation of the upper magnet,
Theory For Field Oriented Control -1 Read More »
Preface Since we need to develop a UI interface to control the STM32 and thereby control the sensor, we need to understand the STM32 UART transmission. However, I personally do not like using UART to control components because the transmission is not easy to write, and poor implementation can lead to issues such as data
UART傳輸使用STM32 HAL實作TX/RX(STM32F401RE) Read More »
Preface Ambient Light Sensor (ALS) is a type of photosensitive device, mainly used in mobile phones, laptops, tablets and other display panels. Currently, AMS_OSRAM has launched a new ALS SFH 5721 The SFH5721 Digital Ambient Light Sensor combines an array of photodiodes and wide dynamicrange readout channels to enable ambient light and infrared sensing. Features:
AMS_OSRAM Ambient Light Sensor SFH 5721 Read More »
Preface This device features advanced ambient light sensing (ALS) and CIE 1931 tri-stimulus color control (and C light sensing). Each device channel has filters to allow for accurate measurement of the ambient environment, and to measure the color of the environment based on optical characteristics. These are used to calculate chromaticity, illuminance, and color
AMS TCS3430 coding on STM32(Arduino) Read More »
Preface The previous article mainly introduced the initialization and FactoryCalib of AMS TOF TMF8801. In this article, we will discuss how to obtain measurement information and the process. The following flowchart is mainly compiled by me based on the previous article’s flowchart. For those who are unclear, you can refer to this table and compare
AMS Time-of-Flight sensor ( TMF8801 )on STM32 -2 Read More »
Catalogue Introduction to SPI Protocol The SPI protocol is a communication protocol (Serial Peripheral Interface) proposed by Motorola. It is a full-duplex communication protocol with high-speed communication on the peripheral device side. It is widely used between communication devices and MCUs, such as ADCs, LCDs, etc. The three lines of the protocol are SCK, MOSI,
SPI introduction and Coding on STM32 Read More »
Preface A time-of-flight camera (ToF camera) is a range imaging camera system employing time-of-flight techniques to resolve distance between the camera and the subject for each point of the image, by measuring the round trip time of an artificial light signal provided by a laser or an LED.We chose the SparkFun Qwiic Time-of-Flight Sensor TMF8801 module as the driving template, paired with
AMS Time-of-Flight sensor ( TMF8801 ) -1 Read More »
