Robot Driver

Robot Driver

The Hofmann Automatic Robot Driver system utilises advanced technology and design techniques to meet the high demand of endurance testing with the precision of control for exhaust emission and performance testing.

The Robot Driver system provides automated control capability for driving vehicles on a chassis dynamometer in a variety of test applications. The modular design and use of carbon fibre materials ensures the robot is installed in the test vehicle extremely quickly. With an automated learn routine all the vehicle’s driving controls are learnt quickly and effectively. The sophisticated automation system can be fully integrated with our chassis dynamometer control system or as a “Stand Alone” unit providing the user with many benefits including:

  • Rapid installation (3 mins) and auto learn
  • Accurate and repeatable control of the drive cycle
  • Climatic (-40°C /+50°C) as standard
  • Robot control system can also control a full chassis dynamometer providing cost effective upgrade solutions
  • Comprehensive scheduler creation software (drag & drop) for easy creation of drivecyles from simple to complex including calculations and conditional logic capability
  • Operate under vDriver control providing ”Real World” driving situations and operation

 

Applications include:

  • Customer specific and regulatory vehicle testing
  • Vehicle exhaust emission testing
  • Vehicle mileage accumulation testing
  • Climatic / Environmental vehicle testing
  • NVH testing
  • Powertrain testing

The Robot Driver can also be used to drive the vehicle in a variety of test applications including:

  • Regulatory and development emission drive cycles
  • Customer specific drive cycles
  • Climatic (-40/+50°C) test applications
  • NVH test applications
  • Endurance/Mileage accumulation – fully integrated and automated test capability with airspeed fans, automatic fuel filling systems and    data acquisition systems with safety and health monitoring
  • General road simulation vehicle testing
  • Transmission testing

The Hofmann automatic Robot Driver system is designed for control of vehicle gearshift, foot pedals, and ignition functions.

Features include:

  • Advanced algorithm design to provide high repeatability for emission development work
  • Pedal actuator contact force measurement for automated set-up procedures and improved feedback
  • A fully automated, intelligent programme to learn the vehicle’s drive functions, including ignition key control
  • Sophisticated control techniques to provide a “human driver” style for realistic testing

The unit is designed for quick and simple installation using modular assembly and no requirement for fixing the actuators to the pedals.

As a result of the Robot Driver’s control capability and flexibility, it provides:

  • Full “journey simulation” – replay of recorded vehicle driving data from the road or track
  • Customer defined drive cycles using the sophisticated scheduler which includes conditional and logical loops, modular construction and arithmetic functions
  • Regulatory pre-defined drive cycles

The Robot Driver can also be used to drive the vehicle in a variety of test applications including:

  • Regulatory and development emission drive cycles
  • Customer specific drive cycles
  • Climatic (-40/+50°C) test applications
  • NVH test applications
  • Endurance/Mileage accumulation – fully integrated and automated test capability with airspeed fans, automatic fuel filling systems and data acquisition systems with safety and health monitoring

Control may be ‘stand-alone’ or fully integrated with a chassis dynamometer system providing flexible solutions for various test situations. Pedal actuators are available for throttle, clutch and brake – manual, automatic or semi-automatic gearboxes and ignition key actuator. The sophisticated control algorithms ensure accurate control of gear engagement combined with sensitive clutch and throttle balance for optimum driving performance.

Fully automatic set-up capability provides auto-gear position, keyswitch learn, pedal positions and clutch bite point learn. The system has in-built safety protection and automatic emergency shut down in the event of vehicle or system fault.

Important features of the system include:

  • Measurement and control of individual gear engagement force
  • Gear change speed control
  • Auto-learn gear positions
  • Multiple gear configuration for left and right-hand drive vehicles
  • Accommodates automatic, sequential and electronic clutchless systems
  • Synchro protection logic
  • No load once gear is selected
  • Seamless integration with chassis dynamometer system
  • Accurate repeatability to fully confirm with Euro IV/V and US drive cycles

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