Linear Flexible Joint

Teach the fundamentals of dynamics and control

Electromechanical Control

The Linear Flexible Joint is a passive linear cart that connects to the Linear Servo Base Unit through a linear spring. As an implementation of the classical mass-damper-spring quadratic system, the linear flexible joint is an ideal textbook-type experiment. The experiment is useful in the study of vibration analysis and resonance.

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The Linear Flexible Joint experiment will help your students learn how to model and control real-world dynamic systems such as flexible couplings and gearboxes.

High-resolution optical encoder to sense cart position
Easy-connect cables and connectors
Fully compatible with MATLAB®/Simulink® and LabVIEW™

Linear Flexible Joint cart (LFJC) mass	0.22 kg
LFJC weight mass	0.125 kg
LFJC dimensions (L x D x H)	10 cm x 14 cm x 12 cm
Equivalent spring stiffness	142 N/m
Spring assembly mass	0.145 kg
Spring length	29.0 cm
LFJC encoder resolution (in quadrature)	4096 counts/rev

Modeling Topics

Derivation of dynamic model using Lagrange
State-space representation
Parameter estimation
Model validation

Control Topics

Linear-quadratic regulator (LQR)
Vibration control

The following additional components are required to complete your workstation, and are sold separately:

For Simulink

QUARC® add-on for MATLAB®/Simulink®
Linear Servo Base Unit
Quanser VoltPAQ-X1 linear voltage amplifier
One of the following DAQ devices:
- Quanser Q2-USB
- Quanser Q8-USB
- Quanser QPIDe

For LabVIEW

Quanser Rapid Control Prototyping (Q-RCP) Toolkit® add-on for NI LabVIEW™
Linear Servo Base Unit
Quanser VoltPAQ-X1 linear voltage amplifier
One of the following DAQ devices:
- NI CompactRIO with Quanser Q1-cRIO
- NI myRIO with Quanser Terminal Board
- Quanser Q2-USB
- Quanser Q8-USB
- Quanser QPIDe