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MOTION CONTROL > NEWS > Press Releases
04/30/05 - Motor Control IC Provides Precision Velocity Control for Brushless Servo Motors
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 Lincoln, MA – Performance Motion Devices, Inc. (PMD) announces the MC73110 Motor Control IC with precision velocity loop for brushless-servo motors. This compact and intelligent single-axis IC operates in internal velocity profile mode, velocity mode with an external velocity command signal, or torque mode with an external torque command signal. The MC73110 is ideal for use in applications such as semiconductor automation, medical automation, and applications with high performance, low-cost brushless motor amplifiers.
The MC73110 uses advanced-motion-control features such as velocity feedback from either an encoder or via a direct-input analog tachometer signal. A velocity scalar term, along with a sophisticated averaging velocity estimator, enables precision velocity control of motor speed and acceleration across a wide range of profiles. MC73110 can also be combined with a velocity integrator loop when position loop control characteristics are required.
Utilizing an on-chip A/D converter, the MC73110 digitizes analog current feedback and provides multiple current sensing methods to maximize motor performance. Only a MOSFET or IGBT triple half-bridge is needed to implement a full-featured brushless-dc-motor-controller. In addition to velocity loop, the MC73110 performs all other functions including PID current loop compensation, trajectory generation, commutation, encoder input and Hall sensor input. Other features include: six-step and sinusoidal commutation, analog or digital command input, profile generation and six-signal symmetric PWM (pulse width modulated) waveform generation. It can be operated as a standalone intelligent motion IC or via serial commands as a programmable axis controller.
Chuck Lewin, CEO and President of PMD comments; "Accurately controlling the velocity of a brushless motor is one of the most important motion control applications in the business today. Doing this at a low cost, and in a convenient 64-pin package, has made the MC73110 one of our hottest new products."
The MC73110 is packaged in a compact 64-pin TQFP (thin quad flat pack) and operates from 3.3 V. More technical information available at:
http://www.pmdcorp.com |
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