How to use FPGAs for quadrature encoder-based motor control applications
By Glen Young, Actel
September 11, 2007 -- pldesignline.com
Precisely tracking speed, acceleration, and position of a motor's rotor is an essential requirement for many motor control applications found in everyday equipment such as fax machines, elevators, and medical equipment. A closed-loop control scheme is able to bring motor feedback information, such as back electromotive force (BEMF) voltage or supply current to the control system. Rotary encoding is a common mechanism for the delivery of accurate speed, acceleration, and position of the motor rotor.
Rotary encoders are commonly deployed in the closed-loop rotor systems used in a wide variety of applications from robotics and high end photographic lenses to opto-mechanical mice and trackballs to rotating radar platforms. A rotary encoder is an electro-mechanical device for converting the angular position of a shaft or axle to a digital code. For many applications and equipment that need to track object location, velocity and accelerations accurately, a rotary encoder offers a cost-effective solution.
Relative and Absolute are two primary types of rotary encoders. A quadrature encoder is in the relative encoder family and is most commonly used in high-speed motor control systems; it also facilitates the ability to determine motor direction.
To read the full article, click here
Related Semiconductor IP
- UCIe Chiplet PHY & Controller
- MIPI D-PHY1.2 CSI/DSI TX and RX
- Low-Power ISP
- eMMC/SD/SDIO Combo IP
- DP/eDP
Related White Papers
- Selection of FPGAs and GPUs for AI Based Applications
- How to use FPGAs to develop an intelligent solar tracking system
- How embedded FPGAs fit AI applications
- How to use snakes to speed up software without slowing down the time-to-market?
Latest White Papers
- Achieving Lower Power, Better Performance, And Optimized Wire Length In Advanced SoC Designs
- The pivotal role power management IP plays in chip design
- What tamper detection IP brings to SoC designs
- Analyzing Modern NVIDIA GPU cores
- RISC-V in 2025: Progress, Challenges,and What’s Next for Automotive & OpenHardware