Development platform for motor control design

26 March 2003 Design Automation

International Rectifier has introduced to the market a development system to expedite motor control design. Designed to support its accelerator design platform for high performance applications such as aerospace flight control, automotive drive train control, automated assembly machine, precision material handling and machining equipment motor control, the company claims that this development system shortens design time from tens of weeks to just days.

The accelerator design platform comes with all hardware and software integrated to achieve a design flow that requires no coding to configure the motor control algorithms and proven designs for analog and power stages. The design platform includes IR's motion control mixed signal chip set, an FPGA-based configurable digital signal processor using parallel processing and customisable peripherals, high voltage ICs for gate drive and current sensing analog functions, and IGBT-based power inverter stage.

The IRACS201 development system is capable of executing an advanced field oriented control (FOC) and PWM algorithm loop in less than 4 µs, while a high performance programmable DSP-based control loop takes as much as 15 to 20 µs. Peripherals can be customised to fit specific application requirements such as an interface for an encoder or resolver, sine PWM or space vector PWM.

Co-designing the peripherals with IR's high voltage gate drive and current sense ICs enables fast parallel processing architecture, resulting in a closed-loop torque control bandwidth greater than 5 kHz, rivalling analog bandwidth with digital flexibility.

The bundled software includes a Windows-based configuration tool, ServoDesigner, that is used to map the internal registers to configure motor type, motion peripherals, control mode, and tune control parameters, and monitor/diagnose internal signal waveform.

For more information contact Avnet Kopp, 011 809 6100, [email protected], www.avnet.co.za

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