Achieve sensorless motor control in just 5 minutes with LAUNCHXL-F28027F

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"LAUNCHXL-F28027F" is a Texas Instruments (TI) microcomputer-equipped evaluation board designed to immediately start sensorless motor control.

This low-cost evaluation board is equipped with TI's real-time control 32-bit microcontroller TMS320F28027F, and uses InstaSPIN™-FOC to realize sensorless motor control.

Here, we will explain the benefits of introducing a sensorless motor and the evaluation board "LAUNCHXL-F28027F" that allows easy development.

Advantages of introducing sensorless motors

There are four main advantages of using a sensorless motor.

1. Space-saving

Smaller than motors with sensors. Therefore, there is a great advantage in adopting it in places where there is no physical space. Applications with limited mounting space, such as air conditioner compressors, benefit greatly.

2. Reduce work processes

In the case of a sensor-equipped motor, it is necessary to adjust the installation of the rotational position sensor for each individual motor, resulting in an increase in work processes. With sensorless, there is no need to adjust individual motors, so work processes can be reduced.

3. Improved reliability

In general, motors with sensors require more parts, such as protection circuits for sensor failure. Sensorless technology improves reliability by reducing the number of parts.

4. Great cost advantage

Reducing the work process and the number of parts reduces the number of parts, resulting in a large cost advantage.

Issues when adopting sensorless motors

Sensorless motors need to be driven in closed-loop control, using voltage, current, motor parameters, etc. to measure position and velocity. Therefore, designing a sensorless brushless motor requires a high degree of expertise and a long development period.

Adopting a sensorless motor requires advanced control technology using a microcomputer.

What is "InstaSPIN™-FOC" that easily realizes sensorless motor control?

"InstaSPIN™-FOC" is a motor control solution provided by TI.

FOC here refers to Field Oriented Control.

InstaSPIN™-FOC is installed in TI's "C2000 Piccolo" series microcontrollers, and dedicated software is stored in the microcontroller's mask ROM area.

This makes it easy for engineers with little expertise in motor control to develop sensorless motor control.

Below are five features of InstaSPIN™-FOC that enable out-of-the-box sensorless motor control.

1. Automatic analysis of motor characteristics

In order to develop a general sensorless motor control, it is necessary to modify the parameters of the motor characteristics to be driven and fine-tune the program.
For this reason, developing a motor control can take months for an engineer with limited expertise.

TI's InstaSPIN™-FOC is equipped with a function to automatically grasp motor characteristics.
You can analyze the drive motor and grasp the characteristics such as the resistance value and inductance of the motor in a short time.

2. FAST software encoder

It is part of the feedback loop that controls the motor, estimating flux, angle, speed, and torque, and providing information to the motor control block to fine-tune motor control.
Therefore, it is possible to control the motor with high accuracy even against time and temperature changes.

3. Control loop tuning

Automatic tuning of the FOC current controller maximizes torque per ampere for most 3-phase sensorless motors for highly efficient motor control.

4. System flexibility

TI's InstaSPIN™-FOC is user-customizable through an API interface.

for example

Using software encoders as feedback sensors
Using InstaSPIN™-FOC as a Torque Controller
Using InstaSPIN™-FOC as a cascaded speed/torque controller

It is possible to correspond to the use such as.

5. Magnetic field control

The user can manually or automatically control the magnetic field.
Therefore, the torque is higher than the design, the rotor speed is higher than the design value, and the motor control can be optimized.

TI's real-time control microcontroller with InstaSPIN™-FOC function enables easy development of sensor and motor control.

Low-cost evaluation board "LAUNCHXL-F28027F" that allows you to try InstaSPIN™-FOC immediately

The evaluation board "LAUNCHXL-F28027F" includes the following items.

1 "LAUNCHXL-F28027F" board
Mini USB-B cable
Quick Start Guide Isolated

A built-in XDS100v2 JTAG emulator enables real-time in-system programming and debugging via USB.

It also provides software debugging functions required for development.

Code Composer Studio Integrated Development Environment (IDE) v7 full-featured (free)
MotorWare™ software available for free download

Therefore, if you purchase this evaluation board "LAUNCHXL-F28027F", you can start evaluation immediately.

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Application example

sensorless
motor

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Product Summary

LAUNCHXL-F28027F Evaluation Board

Manufacture name	Texas Instruments (TI)
Type name	LAUNCHXL-F28027F
Built-in microcomputer	C2000 real-time control microcomputer TMS320F28027F
Main function	64KB onboard flash, 8 PWM channels, eCAP, 12-bit ADC, I2C, SPI, UART, InstaSPIN-FOC
package	1 "LAUNCHXL-F28027F" board Mini USB-B cable Quick start guide
development software	Code Composer Studio Integrated Development Environment (IDE) v5 full-featured (free) An integrated isolated XDS100v2 JTAG emulator enables real-time in-system programming and debugging over USB.