Motor Control with Resolver

In this design, Renesas provides a stepping motor solution with resolver position control and an alternate BLDC motor solution. The stepping motor solution realizes a high-performance motor drive unit for office automation and industrial applications such as scanners, multi-function printers and automated cash deposit machines. While the BLDC motor solution realizes a high-performance motor drive unit for Automatic Guided Vehicle (AGV), small vehicle, service robot, and assisted bicycle applications.

System Benefits:​

• Accelerate development by using the total solution including sample software.
• Reduce BOM cost by replacing the optical encoder to a resolver.
• Stepping motor solution
  • Realize no step-out by servo control with resolver position information. Enable no step-out margin, maximizing motor torque, downsizing motor (1 size smaller), and reducing BOM cost by reducing the gear (speed reducer).
  • Realize low noise and low vibration by servo control with torque ripple reduction.
• BLDC motor solution
  • Fine movement/stop control is realized by servo control using high-precision position information with the high-resolution resolver.
  • Suppresses rotation unevenness and reduces ripple that makes vibration by increasing the position resolution and improving the speed response.