DMA0204024B101
Hurst
controlling a Hurst DMA0204024B101 3-phase permanent magnet synchronous motor (PMSM)
Reference DesignMicrochip
LX7720 and SAMRH71F20 PMSM FOC Motor Demo
Reference design for Field Oriented Control (FOC) of a 3-phase PMSM using the rad-hard SAMRH71F20 MCU and LX7720 motor driver with quadrature encoder feedback.
Overview
This reference design document details the implementation of Field Oriented Control (FOC) for a Hurst DMA0204024B101 3-phase permanent magnet synchronous motor (PMSM). The system utilizes the radiation-hardened Microchip SAMRH71F20 MCU (Cortex-M7) as the controller and the LX7720 as the motor driver and sensing interface. The LX7720 drives three MOSFET half-bridges, senses motor phase currents via sigma-delta modulation, and monitors quadrature encoder signals. The SAMRH71F20 executes the FOC algorithm, maintaining a 20kHz PWM loop and a 4kHz torque loop. The document includes hardware configuration details for SAMRH71F20-EK and SAMRH71-TFBGA-EK evaluation kits, pin mapping, and digital filter implementations for current sensing.
Use Cases
- Radiation-hardened motor control for space and satellite applications
- High-reliability precision motion control in harsh environments
- Implementation of FOC algorithms on ARM Cortex-M7 platforms
- Interfacing sigma-delta current sense streams with MCU digital filters
- Developing aerospace-grade actuator and mechanism controllers
Topics
Microchip
LX7720
SAMRH71F20
PMSM
Field Oriented Control
FOC
Motor Control
Radiation Hardened
Hurst DMA0204024B101
Quadrature Encoder
Sigma-Delta Modulator
Aerospace
Referenced Parts
LX7720
Microchip
The LX7720 drives 3 MOSFET half-bridges for the 3 motor phases, senses motor phase currents, and monitors the motor's two-channel quadrature optical encoder
SAMRH71F20
Microchip
demonstration firmware running on a radiation hardened SAMRH71F20 MCU.
SAMV71Q21RT
Microchip
The radiation tolerant SAMV71Q21RT offers more CPU capability, and SNR can be optionally improved for this MCU
| DMA0204024B101 | Hurst | controlling a Hurst DMA0204024B101 3-phase permanent magnet synchronous motor (PMSM) |
| LX7720 | Microchip | The LX7720 drives 3 MOSFET half-bridges for the 3 motor phases, senses motor phase currents, and monitors the motor's two-channel quadrature optical encoder |
| SAMRH71F20 | Microchip | demonstration firmware running on a radiation hardened SAMRH71F20 MCU. |
| SAMV71Q21RT | Microchip | The radiation tolerant SAMV71Q21RT offers more CPU capability, and SNR can be optionally improved for this MCU |