Performance Motion Devices (Lincoln, MA) offers the Magellan™ family of motion control integrated circuits (ICs) with 7-segment s-curve profile generation. Available in 1-, 2-, 3-, and 4-axis versions, the programmable chips provide the control required to eliminate oscillation and reduce vibration for smoother motion and higher throughput. The 7-segment s-curve profiles reduce the change in acceleration, resulting in less wear and tear on the system and faster transfer times.

Other selectable profile modes are supported, including trapezoidal, velocity contouring, and electronic gearing. The ICs accept input parameters such as position, velocity, and acceleration from the host and generate a corresponding trajectory. Standard functions such as timers, PID control, and input/output management can be programmed. Communication occurs via a host microprocessor using and 8- or 16-bit parallel bus, CANbus 2.0B, or an asynchronous serial port.

Features include programmable PID filter with velocity and acceleration feedforward, 32-bit position error, dual bi-quad filters, 50-μsec loop time, and multi-chip synchronization. Trace capabilities provide designers with on-the-fly data storage for analyzing system performance, tuning servo filters, and performing maintenance and diagnostics. An advanced instruction set supports more than 130 commands. The chips are packaged in a 144-pin TQFP, and in a 100-pin TQFP, and operate at 3.3V.

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Motion Control Technology Magazine

This article first appeared in the June, 2007 issue of Motion Control Technology Magazine.

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