Training | Resources

arrow_back_ios

Main Menu

arrow_back_ios

Main Menu

See All Acoustic End-of-Line Test Systems See All DAQ and instruments See All Electroacoustics See All Software See All Transducers See All Vibration Testing Equipment See All Academy See All Resource Center See All Applications See All Industries See All Insights See All Services See All Support See All Our Business See All Our History See All Our Sustainability Commitment See All Global Presence
arrow_back_ios

Main Menu

See All Actuators See All Combustion Engines See All Durability See All eDrive See All Production Testing Sensors See All Transmission & Gearboxes See All Turbo Charger See All Industrial electronics See All S&V Signal conditioner See All DAQ Systems See All Power Analyser See All S&V Hand-held devices See All High Precision and Calibration Systems See All Test Solutions See All nCode - Durability and Fatigue Analysis See All ReliaSoft - Reliability Analysis and Management See All Test Data Management See All DAQ Software See All Drivers & API See All Utility See All Vibration Control See All Acoustic See All Current / voltage See All Displacement See All Load Cells See All Pressure See All Strain Gauges See All Vibration See All Torque See All LDS Shaker Systems See All Vibration Controllers See All Power Amplifiers See All Accessories for Vibration Testing Equipment See All Training Courses See All Acoustics See All Asset & Process Monitoring See All Custom Sensors See All Data Acquisition & Analysis See All Durability & Fatigue See All Electric Power Testing See All NVH See All Reliability See All Smart Sensors See All Vibration See All Weighing See All Automotive & Ground Transportation See All Calibration See All Installation, Maintenance & Repair See All Support Brüel & Kjær See All Release Notes See All Compliance See All Our People
arrow_back_ios

Main Menu

See All QuantumX See All LAN-XI See All SomatXR See All MGCplus See All CANHEAD See All Optical Interrogators See All GenHS See All API See All Microphone Cartridges See All Microphone Sets See All Microphone Pre-amplifiers See All Sound Sources See All Acoustic Calibrators See All Special Microphones See All Accessories for acoustic transducers See All Experimental testing See All Transducer Manufacturing (OEM) See All CCLD (IEPE) accelerometers See All Charge Accelerometers See All Rotating See All Non-rotating (calibration) See All Electroacoustics See All Noise Source Identification See All Environmental Noise See All Sound Power and Sound Pressure See All Noise Certification See All Industrial Process Control See All Structural Health Monitoring See All Electrical Devices Testing See All Electrical Systems Testing See All Grid Testing See All High-Voltage Testing See All Vibration Testing with Electrodynamic Shakers See All Structural Dynamics See All Machine Analysis and Diagnostics See All Dynamic Weighing See All Calibration Services for Transducers See All Calibration Services for Handheld Instruments See All Calibration Services for Instruments & DAQ See All On-Site Calibration See All Resources See All Software License Management
INTERNAL USE - Case Study preview university__of__cologne_345

Driving Dynamics Tests on Agricultural Machinery

KLB, GERMANY

Introduction

The Cologne Laboratory for Construction Machines (KLB) is an integral part of the course of studies for mobile work machines at the Cologne University of Applied Sciences. It is involved in numerous research and industrial projects, including an examination and optimization of driving dynamics, driving safety and driving comfort in mobile work machines.

KLB's equipment for these projects includes two six-component measuring wheels manufactured by Kistler. They were purchased through the FHInvest funding program of the German Federal Ministry for Education and Research (BMBF).

The road tests in Fig. 1 are designed to demonstrate the possibilities offered by using these measuring wheels and additional sensors in combination with the catman AP software from HBK for examining driving dynamics in mobile work machines.

The goal of these road tests was to determine the tire parameters of the tractor under different operating conditions. These parameters are needed to perform the simulations. Determining these parameters, especially for large-volume agricultural tires, involves considerable effort. So a process was selected that could be used to determine the relevant tire parameters directly on the vehicle during simple road tests.

link Copy Link
email
See Products
chevron_left
chevron_right

Measurement technology and software

A comprehensive examination of driving dynamics requires a wide range of different sensor equipment and the corresponding software to record and analyze the measurement data. A diagram of the measurement technology used for this examination is shown in Fig. 2. The HBK catman measurement software, the HBK QuantumX measuring amplifier system and the following sensors were used in the tests:

  • Analog sensors for measuring force, displacement, and strain
  • Two Kistler wheel force sensors for wheel loads up to 24 metric tons
  • CAN inertial navigation system
  • CAN speed sensors
  • Video camera

In addition to supporting the QuantumX amplifier system, the catman data acquisition system also makes it possible to acquire measurement data from the Kistler wheel force sensors via an Ethernet interface and video data via a USB or Ethernet interface. Since there is no room in the tractor cab to hold the necessary measuring equipment, it was placed in a control cabinet on the right side of the vehicle (Fig. 3). The QuantumX amplifier, the on-board electronics required for the measuring wheels and the voltage supply are also installed in the control cabinet. All of the measurement equipment is operated from a measurement PC installed in the driver's cab. A second person outside the tractor can access this PC during the road tests via a remote desktop connection. To monitor the road tests as they were being conducted, an option of the catman software was used for visualizing measurement data during the test. An example of this is shown in Fig. 4 for the essential parameters of a measuring wheel, together with a video recording. The tests can be analyzed accurately from a safe distance using this function.

Test implementation

Three different road tests were performed with the measurement technology shown here. The tire pressure, travel speed and ballasting of the tractor were modified in the tests. 

  • Driving over an obstruction on one side to examine the vertical rigidity of the tires when subjected to a ramp-shaped stimulus
  • Braking tests to examine the longitudinal forces depending on the measured slip
  • Examination of the slip angle and lateral rigidity during quasi-steady-state circular travel with increasing lateral acceleration

The tire parameters required for the simulation and the momentum of the vehicle were successfully measured during the road tests. Fig. 5 shows some examples of lateral force curves over the slip angle for different wheel loads on the rear wheel of the tractor. Using HBK measurement technology and catman software, it was easy to set up and operate synchronous data acquisition for different sensors including Kistler wheel force sensors.

Cologne Laboratory for Construction Machines (KLB) at the Cologne University of Applied Sciences

The TH Köln – University of Applied Sciences considers itself a University of Technology, Arts, Sciences. Disciplinarily and culturally diverse, the TH Köln creates social innovation and contributes to solving the challenges of today’s society. As a community of faculty and students, we see ourselves as a learning organization forging new paths. For instance, the TH Köln continues to pioneer new didactic concepts for academic teaching.

More about Cologne Laboratory for Construction Machines (KLB) at the Cologne University of Applied Sciences

Technology used

No more result to load

Modern Slavery Statement     Imprint    Cookie Policy    Privacy Policy    Sitemap    Ethical Business

 

 

© 2024 Hottinger Brüel & Kjær

 

 

close
nCode logo
Graphics Brand

We have moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
ReliaSoft-Logo-webp
Graphics Brand

We have moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
Prenscia HBM-Logo rgb
Graphics Brand

We have moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
HBM-Logo blue rgb
Graphics Brand

We have moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
logo of Brüel & Kjær (BKSV), experts of sound and vibration measurements from HBK
Graphics Brand

We have moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.