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Keyvisual: PWM generator for the dynamic control of vehicle actuators using pulse width modulation
TEST SYSTEMS

PWM Generator

PWM generator for the dynamic control of vehicle actuators using pulse width modulation

Unique Benefits

  • Generating variable power PWM signals up to 10 A
  • Current measurement at the actuator as monitoring function
  • Supporting the SENT protocol according to SAE J2716

System Properties

  • Fully integrated control on the hardware and software sides
  • Adjustable frequency range from 1 Hz to 10 kHz
  • Complete control via high-speed CAN bus
  • Small size and simple assembly

Customer Benefit

  • Fully integrated PID control of vehicle actuators with position sensors
  • Ideal to control VTG and Wastegate on the turbocharger
  • Ideal to control throttle and AGR valve on the combustion engine
  • Test bench proven
  • Simple handling

Functional Description

The PWM generator was specially designed to control flaps, actuators, valves, and smaller DC motors. It is suitable for use in electrical cabinets. A particular feature is the H-bridge power output that enables reversed PWM output signals to change the rotational direction of the actuator.

All settings can be made via CAN high-speed interface (automotive CAN 500K). The PWM generator has an integrated position feedback (0 – 5V) for controlling the actuator. For prospective requirements, a SENT interface according to SAE J2716 has been integrated and can be configured via an internal USB interface.

Due to an integrated learning mode, the limit positions of the actuator can easily be identified. The operating state of the actuator on the test bench can be monitored at any time using the integrated current measurement.