ADS-7000

ADS-7000 Automatic Driving System - 1
ADS-7000 Automatic Driving System - 2
ADS-7000 Automatic Driving System - 3
ADS-7000 Automatic Driving System - 4
ADS-7000 Automatic Driving System - 5

Automatic Driving System

Automatically operates a vehicle on a chassis dynamometer, using highly accurate servo tracking characteristics. Repeatability and accuracy exceed capabilities of the most experienced human drivers.

Designed for vehicle-emission, fuel-consumption, and emission-endurance testing, ADS-7000:

  • Drives nearly any vehicle type including CVT, LEV, direct-injection, hybrid, and electric vehicles
  • Operates manual and automatic-transmission vehicles
  • Automates testing under harsh or extreme conditions inappropriate for human drivers

Sophisticated "learning function" automatically determines the positional relationship between each actuator and the vehicle. Once data is stored, vehicles of the same model can be tested without performing the learning function.

Easy to install and operate, ADS 7000 includes a mechanical unit, control system, and remote controller. Actuators in the mechanical unit control the throttle, brake, clutch, gearshift, and ignition key.
The PC-based control system provides:

  • Editors for entering vehicle model data, driving schedules, gearshifts, ignition schedule, and other test parameters
  • Real-time graphic-numeric displays
  • Overall test sequence control
     

When integrated with measuring equipment, chassis dynamometer, and test cell computer, ADS-7000 allows fully automatic, unmanned laboratory operation.

 

 

Segment: Automotive Test Systems
Division: Mechatronics
Base product

    Applications

    • Vehicle emissions and fuel consumption R&D testing on chassis dynamometers
    • Prolonged endurance and/or high-speed test runs
    • Testing under severe climatic conditions or other conditions which might exhaust or cause
      danger to a driver
    • Fully automatic, unmanned laboratory operation

     

    Features  

    • Equal or superior to the most experienced human drivers in accuracy and repeatability
    • Equipped to handle nearly any vehicle:
      • CVT, LEV and direct-injection engine vehicles
      • Next generation hybrid and electric vehicles
      • Floor-shift manual or automatic-transmission vehicles M/T or A/T - up to seven gears
      • Right-or left-handed drive vehicles simply by rotating the arm 180°
    • Learning function automatically determines:
      • Relationship between gas pedal movement, speed, and acceleration
      • Relationship between brake stroke and deceleration
      • Relationship between gas pedal movement and engine RPM
      • Gas pedal play
    • Adjusts automatically to driving position and vehicle characteristics
    • Feed-forward control minimizes tracking lag. Feedback control compensates for moment-to-moment variations in vehicle characteristics

     

    High-quality CRT displays

    • Analog gauges for engine revolution and vehicle speed
    • Strip-chart display of actual vs. scheduled speed
    • Over-speed and over-engine-revolution limits
    • Throttle, brake-pedal, and gear-shift positions
    • Vehicle speed errors
    • Easy-to-use editor allows creation of driving schedules. Gearshifts may be specified by time or speed
    • Provides AK interface to host computer over Ethernet LAN or RS-232
    • Installs in minutes in any type of vehicle
    • Improves efficiency of chassis laboratory facilities by allowing round-the-clock operation through fully automated, unmanned laboratory operation
       

    System Modules

    Mechanical Unit

    Uses actuators to control throttle, brake, clutch, gearshift, and ignition key. Can be adjusted for left-or right-hand drive simply by rotating the arm 180°. Available in three configurations to support:

    • Both manual and automatic transmission vehicles
    • Only automatic transmission vehicles (2 types)

    One person can quickly and easily install the unit with these steps:

    • Fasten mechanical unit to seat frame
    • Fasten actuators to gas, brake and clutch pedals
    • Fasten actuator to gearshift knob (adjusted to neutral)
    • Put key actuator in ignition keyhole
    • Connect RPM sensor to engine
    • Initiate automatic adjustment function (takes approximately 3 minutes)

    Weighs approximately 30 kg (66 lbs) and can be separated into parts weighing less than 10 kg (22 lbs) each.

    Control System

    Provides over-all system control. Includes the following components in a 19-inch rack cabinet:

    PC-based computer sets vehicle and test conditions, adjusts positional relationships of mechanical unit, and controls all operations from learning mode to test operation:

    • Easy-to-use editors allow entry of speed tables, shift patterns, command tables, and vehicle/engine parameters.
    • High-resolution CRT provides real-time displays during testing.
    • Communication to MEXA 7000, chassis dynamometer, and VETS vehicle emissions-test system allow fully automatic, unmanned operation of the test cell.

    Controller controls actuators and test sequence, using feed-forward and feedback control. 

    DC servo driver provides power to servomotors for accelerator, brake, clutch, gearshift selector and starter.

    Remote Controller
    Performs installation adjustments and checks positional relationship of pedal actuators and gearshift lever. Includes these functions:

    • Mount
    • Auto Adjust
    • Manual Adjust
    • Adjust Check
    • Key Adjust
    • Gearshift check

    Supported gearshift positions include N and 1 to 7 for manual transmission vehicles; N/D/D3/2/L for automatic transmission vehicles.

     

    ADS-7000 Basic Specifications
    (See Options for additional features)

    Main Components

    Control system
    CRT, keyboard, mouse
    Infrared remote controller

    Supported Vehicles

    Standard passenger cars and light-duty trucks:

    • Gasoline, diesel, direct-injection engines

    • Spontaneous manifold, turbo charger, super charger

    • LEV

     

    Configurations

     
    1. M/T and A/T vehicles:
       
      M/T vehicle: - from three - to seven-speed
      A/T vehicle: N/D/D3/2/L
      Operate Axis A, B, C, X, Y and S for accelerator, brake, gearshift and starter. 
       
    2. Only A/T vehicles:
       
      Floor-shift: N/D/D3/2/L
      Column-shift: N/D/D3/2/L
      Operate Axis A, B, Y and S for accelerator, brake, gearshift and starter.
     

    Mechanical Unit

    Weight: 30 kg / 66 lb. Separates into parts weighing
    10 kg / 22 lb each.

    Actuators

    Stroke

    Operating Force

    Accelerator

    200 mm

    160 N

    Brake

    200 mm

    220 N

    Clutch

    200 mm

    410 N

    Selector

    200 mm

    220 N

    Gearshift

    250 mm

    220 N

    Ignition Key Starting torque 170 N · cm; rated torque of 40 N · cm. Two-position operation: start and stop.

    Installation Time

    Approximately 4 minutes plus 3 minutes for automatic adjusting.

    Functions

    Driving Functions

    Operates test-vehicle accelerator, clutch and brake pedals
    Selects and shifts to each gear
    Operates ignition key to start and stop engine

    Control Modes

    Vehicle speed vs. time (saved on hard disk)
    Command table (saved on hard disk)
    Stroke control of accelerator and brake

    Control Method

    Feed-forward + PI (proportional-plus-integral)

    Learning Function

    Auto Axis Adjust - Learns positions for gearshift and pedal stroke.

      

    Manual Adjust - Learns positions for pedal stroke and manual gearshift.

      

    Axis Adjust Check - Checks position for gearshift and pedals.

      

    Engine Adjust - Learns start position of engaged clutch, acceleration, and engine revolution during start-up.

    Standard Driving Schedules

    EPA, ECE and Japanese driving schedules included with system.

    Custom Driving Schedules

    Created using graphical editor or learned by collecting data while driving vehicle on the chassis dynamometer.

    Max. time: 8000 s
    Min. time: 0.1 s
    Max. number of gearshift changes: 4000

    Editing functions

    Vehicle data
    Target speed pattern
    Gearshifts-by speed or time
    Start-up timing
    Engine start and stop
    External digital outputs

    Safety Functions

    Alarm and Emergency Stop - Throttles to zero, shifts gear to neutral position, disengages clutch, turns engine key off.

    Power Failure - Completely releases throttle actuator.

    Operating Procedures

     
    1. Select driving pattern w/function key or mouse.
    2. Start operation with function key, mouse or external command - ends automatically as programmed.
    3. Stop operation (if desired) with function key, mouse or external command.
    4. Once on-line, select driving pattern and start and stop operation with commands from the host computer.
     

    Operating Parameters

    Ambient Conditions

    Mechanical unit:
    0-45°C (option: -10 to -20°C), 30-90% RH, non-condensing

    Control unit:
    10-35°C, 45-80% RH, non-condensing

    Power

    200/220/230/240V AC, 50 Hz, single phase, 3.0 kVA or
    110/115/120V AC, 60 Hz, single phase, 3.0 kVA

    Inputs/Outputs

    Frequency inputs for dynamometer speed and engine RPM
    Digital and analog inputs for external control
    Digital outputs for status
    Analog output for chart recorder

    Host Communication

    RS-232C or Ethernet LAN using AK protocol:

    Operation commands:19 types
    Inquiry commands: 29 types
    Setting commands: 24 types

     

    Options

    • Support for CVT, hybrid, and/or electric vehicles
    • 3-position operation of ignition key Ignition On, Ignition Off, and Engine On
    • Additional control modes
    • Manifold pressure control: PI variable gain control method
    • Engine revolution control: Feed-forward + PI control
    • Step-up control by speed, RPM, external signals
    • Manual Driving Unit - allows manual remote control of:
      • Accelerator - one rotation and ten rotation potentiometer (0-100%)
      • Brake - one rotation potentiometer (0-100%)
      • Gearshift - control with buttons
      • Ignition key - on and off control
      • Uninterruptible power supply

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