for state of the art Multiaxis force
platforms Multiaxis test machines Multiaxis ransducers
AMTI's multiaxis force platforms are used by hundreds of gait and biomechanics laboratories around the world. Excellent performance characteristics and durable designs coupled with AMTI's commitment to provide responsive and comprehensive customer support makes these force platforms the logical choice for gait laboratory and clinical installations.
AMTI's force platforms are the culmination of many years of research and development and they represent the state of the art in multi-axis force sensing technology. Each force platform provides six outputs corresponding to the three orthogonal forces and the three orthogonal moments acting on the platforms top surface.
AMTI’s Ethernet-based data acquisition instruments provide continuous high speed data acquisition and PID motion control via a simple Ethernet interconnection. Our data acquisition products include DigiAmp with a high-gain amplifier for strain gage amplification and signal conditioning and DigiVolt with a low-gain amplifier for analog signal sources such as potentiometers, LVDT’s and other high level signals. AMTI’s DigiControl is a complete PID controller with a signal conditioning front end well suited for servo-hydraulic and servo-pneumatic control applications.
AMTI’s Ethernet enabled instruments are ideal for remote data acquisition and control providing up to 500 feet of separation (with out a repeater) between the instrument and the host PC used for data storage. With readily available Ethernet physical layer options such as fiber optics, wireless and the internet, the remote possibilities become almost endless.
These are precision instruments which include a 16 bit 96 kHz A/D digitizing front end coupled with a DSP (digital signal processor) for signal conditioning and digital filter (or PID control loop) implementation. These instruments are designed to provide the highest possible immunity to varying environmental conditions such as humidity and temperature changes. All of the instruments have 4KV ESD input protection designed to protect the sensitive amplification and digitization circuitry from accidental static discharge.
Wherever it is important to measure forces and moments in three dimensions you will find AMTI multiaxis load cells (multiaxis transducers). AMTI's load cells provide up to six degrees of freedom (DOF) and can resolve applied loads into three orthogonal forces and three moments.
Our load cells are used in the aerospace industry for wind tunnel measurements, control surface measurements, landing gear drop testing and for pilot ergonomic studies.
Our multiaxis force platforms and multiaxis transducers have been used by NASA in orbital experimentation for zero gravity ergonomic and task performance studies.
Force control and compliance based robotics control require multiaxis force and moment measurement. AMTI multiaxis load cells are used for inline measurement of actuator forces and are used as robotics force platforms to measure reaction forces.
AMTI multiaxis transducers are used in many marine and naval
applications including tow tank measurements, control surface
studies and propeller performance investigations.
Manufacturing applications include grinding and abrasive wheel
research and development, tool wear and tool performance research,
cutting process optimization and tool wear monitoring.
Automotive applications include tire performance research, vehicle test stand instrumentation, operator ergonomics, crash testing, vehicle dynamics, vehicle aerodynamics and wind tunnel testing.
Many applications are found in materials testing, test machine instrumentation, tribology (friction and wear), structural modeling and testing, structural dynamics, earthquake simulation and other areas where multiple degrees of freedom of force and moment measurement are required.
AMTI’s multiaxis load cells and transducers are used for many human performance monitoring tasks such as athletic performance measurements, orthopedic research and physical and occupational therapy and research.
AMTI has recently introduced a flexible single station joint simulator machine (Force5) which may be configured for a variety of joint simulation tasks. In its standard configuration, this machine has four degrees of freedom and may be used as a general purpose multiaxis testing machine.
With the addition of fixturing and a fifth passive degree of freedom the machine becomes an ideal knee simulator machine which may be programmed to provide either force or displacement control for the AP motion meeting the ISO14243 knee testing standard.
AMTI’s abduction actuator may be mounted on the machine to provide a programmable abduction axis for hip motion simulation. Other applications include TMJ prosthetic testing, dental implant testing, elbow joint testing and spine component testing.
AMTI’s twelve station hip simulator machine played a prominent part in the discovery of the fundamental nature of the wear of UHDPE acetabular components and is used world wide for the evaluation of hip implant designs. The hip simulator machine meets the ASTM-1714-96 standard for hip implant testing.
AMTI’s six station knee simulator machine is also widely used by prosthetic device manufacturers and researchers around the world. In our continued effort to better serve the needs of the implant testing community AMTI has recently developed a new control system which will be incorporated in all of our testing machines. This control system allows the selection of force or displacement modes of control thus satisfying the ISO 14243 standards for knee implant testing.
All of AMTI’s simulator machines provide programmable motion control, which can simulate the subtleties of human joint motion while simultaneously testing six (knee) or twelve (hip) implant components under identical conditions.