User's Guide
SLOU395D – July 2014 – Revised June 2017
DRV10983 and DRV10975 Tuning Guide
The DRV10983 and DRV10975 are three-phase sensorless motor drivers, featuring an I2C interface that
allows the user to reprogram specific motor parameters in registers and burn them into the EEPROM to
help optimize the performance for a given application. This document helps customers quickly set up the
DRV10983 and DRV10975, enabling them to experience the devices' powerful performance and flexible
programmability.
Read Datasheet
Watch Quick Start Video
Install GUI
Try I2C Communication
Configure Closed Loop
Current Limit, Lock Detect
PWM Output, AVS and FG
Options
Enable Entering to Closed Loop
Acquire Motor Parameters
Motor Resistance
BEMF Constant
1st Milestone
Motor spinning in
Open-loop
2nd Milestone
Motor Speed Control in
Closed Loop
Connect Motor
Power on
Launch GUI
Exercise Current Control and
Protection
Enable Configuration
Set the Parameters
Configure Startup Setting
Disable Closed Loop
Speed Control by GUI
Fine Tune Start-up Setting
Adjust Lead Angle to Optimize
Efficiency
Exercise Lock Detect and AVS
Function
Figure 1. Sequence of Events
SLOU395D – July 2014 – Revised June 2017
Submit Documentation Feedback
DRV10983 and DRV10975 Tuning Guide
Copyright © 2014–2017, Texas Instruments Incorporated
1
Bench Set Up
1
www.ti.com
Bench Set Up
Before connecting your own motor, read the DRV10983 (SLVSCP6) or DRV10975 datasheet (SLVSCP2),
DRV10983 and DRV10975 EVM user’s guide (SLOU393), and watch the quick start video. Also, install the
GUI software on your computer, and make sure the I2C communication is working. If you have not done
so, please refer to the Quick Start Guide (SLYU022).
2
Acquire Motor Parameter
When a new project is started, the first step is to acquire the motor parameters (see Table 1). The motor
parameters help determine whether it is suitable for the DRV10983 and DRV10975 and what the proper
settings are for this motor. The following sections describe how to measure each parameter. Having a
picture of the motor is also suggested to have an overview of the motor design.
Table 1. Motor Parameter Table
2.1
ITEM
NUMBER
OPERATION
VOLTAGE
Motor1
Motor1
Motor1
Motor1
Motor1
Motor1
NUMBER OF
POLES
MAXIMUM
SPEED (RPM)
MAXIMUM
CURRENT
R (PHASE-CT)
Kt (PHASEPHASE)
LR
CONSTANT
INERTIA
PICTURE
Operation Voltage, Number of Poles, Maximum Speed, and Maximum Current
These four parameters should be provided by the motor specification or the application specifications.
2.1.1
Operation Voltage
Most of the time, operation voltage is fixed with less than 10% error. Some applications adjust motor
speed by adjusting the operation voltage. In this condition, record the maximum operation voltage.
2
DRV10983 and DRV10975 Tuning Guide
Copyright © 2014–2017, Texas Instruments Incorporated
SLOU395D – July 2014 – Revised June 2017
Submit Documentation Feedback
Acquire Motor Parameter
www.ti.com
2.1.2
Number of Poles
The number of poles means the number of poles of the permanent magnet. The number of pole pairs is
the number of poles divided by two.
N
S
S
N
S
N
N
N
N
S
S
N
N
S
S
S
S
N
2 Poles
1 Pole Pair
4 Poles
2 Pole Pairs
12 Poles
6 Pole Pairs
Figure 2. Pole Pairs in Permanent Magnets
If the number of poles is not listed in the motor specification, measure it with the following method:
1. Use a lab power supply and inject current from phase U to phase V. Make sure the current amplitude
is less than the motor rated current.
x
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