arrow_back_ios

Main Menu

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

Main Menu

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 High Precision and Calibration Systems See All DAQ Systems See All S&V Hand-held Devices See All Industrial Electronics See All Power Analyzer See All S&V Signal Conditioner See All Acoustic See All Current and Voltage Sensors See All Displacement See All Force sensors See All Load Cells See All Pressure See All Strain Gauges See All Temperature Sensors See All Torque Sensors See All Vibration See All Accessories for Vibration Testing Equipment See All Vibration Controllers See All Measurement Exciters See All Modal Exciters See All Power Amplifiers See All LDS Shaker Systems See All Test Solutions 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 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 BKSV Worldwide Contacts
arrow_back_ios

Main Menu

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 Piezoelectric Charge Accelerometers See All Piezoelectric CCLD (IEPE) accelerometers 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 Vehicle Electrification 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

Throughout history, there have been industrial applications that require a load or force measurement within a system that involves either linear electric or hydraulic smart actuators. To accomplish the load measurement in these applications involved one of two main solutions: hydraulic smart actuators and electric smart actuators.

Hydraulic Smart Actuators

These actuators normally monitor cylinder and system load by measuring the fluid pressure using a pressure transducer.  While this method provides the operator with an understanding of the fluid pressure levels within the system, there is inherent error in measuring the force that the piston applies. Variances in fluid temperature, cylinder size, friction, piston/rod seal geometry, and transverse loads collectively can negatively affect load calculations by as much as 20% or more.

Electric Smart Linear Actuators - Open Loop

An open loop measurement system has been used by controlling the voltage and current sent to the actuator rotational servo motor. This method of force value calculation can have error percentages over 15-20%. Errors can occur due to both friction and the condition of the actuator.

Electric Smart Linear Actuators – Closed Loop

Various industries are increasingly requiring much more precise measurement of load and force within their actuator systems. This can be accomplished using a strain gauge based load cell method of force measurement creating a Smart Linear Actuator. Placement of strain gauge based load cells either externally or internally within the actuator can provide precise force measurements within an accuracy of under +/- 1%. Rugged load cells can measure the force an actuator applies within the system or an external force acting upon the system. Various load cell outputs of mv/V, 4-20mA, 0-5VDC, J1939 CANbus, etc. send a signal that then allows the increase of power to the electric actuator servo motor or the hydraulic valve to properly adjust to the required level of force.

OEM Sensors from HBK

At the OEM level, HBK can provide highly custom, fully integrated load cells designed to fit into actuators housing or anywhere within the mechanical system. This gives OEMs greater flexibility to have the load cell designed around their system and to their desired specifications. The list of applications that require precise force and load measurement is rapidly growing, and for various reasons.&nbsp;</p>

In manufacturing, we see advancements in material handling, molding, die-cutting, stamping and riveting pushing for a higher level of accuracy. Synchronized load balancing can be achieved in process automation through the use of force measurement using load cells.

Off-highway industrial vehicles are becoming more intelligent along with providing a higher level of safety. This includes a higher level of control for agricultural equipment such as planting downforce, grain tank balancing, or safety overload condition monitoring on scissor lifts and crane hoists.

Within medical facilities we see advancements in patient care with intelligent control of hospital beds, stair lifts, and lift tables.

As advancements in a wide range of industrial applications are made, there will be a greater need for precise load and force measurement where electric and hydraulic smart actuators are being implemented. HBK is ready to partner with OEMs to design and manufacture custom load cell solutions ready to handle tomorrow’s toughest challenges.

This article can also be seen featured on manufacturingtomorrow.com. 

Support Content