Gyro/Stable Platform

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Introduce Rotational Dynamics Concepts

The Gyro/Stable Platform module is ideal to introduce rotational dynamics principles. You can use it to demonstrate real-world control challenges such as those encountered in control and guidance of sea vessels, aircraft and submarines or in satellite navigation.

The Gyro/Stable Platform module attaches to the Rotary Servo Base Unit (SRV02). Using this experiment, students learn how to:

  • model the system from first principles
  • design a PID-based controller that maintains the direction of the gyroscope module while the base plate is rotated
  • implement the controller and evaluate the system performance

In addition to teaching intermediate control concepts, the Gyro/Stable Platform can be used for research in various areas, including H-infinity control and robust control.

How It Works

The Gyro/Stable Platform module is attached to the Rotary Servo Base Unit. The module consists of a rotating disk mounted inside a frame. The disk is actuated about its center through a DC motor. An internal frame holds the rotating disk and is attached to an external frame through two shafts at both ends.

A gear mechanism is connected between one of these end shafts and an encoder measures the angle of the blue frame as it rotates about the shafts, i.e., it measures the disc tilt angle.

The Rotary Servo Base Unit is mounted on a 2-plate structure. The plates are mounted on top of each other and are free to rotate. This allows the gyroscope structure to be manually rotated relative to a fixed surface in order to simulate external disturbance to the gyroscope system.

When the gyroscope controller is running, the Rotary Servo Base Unit keeps its heading as you rotate the bottom plate – without any direct position measurement of the base plate.

Quanser-developed Courseware Included

The Gyro/Stable Platform module comes with Quanser-developed courseware. The workbook with exercises, together with quick start resources, a comprehensive User Guide, pre-designed controllers and a system model allow you to get your lab running faster, saving months of time typically required to develop lab materials.

  • Gyro/Stable Platform module easily attaches to the Rotary Servo Base Unit
  • Rotary Servo Base Unit mounted on a rotatable two-plate structure to simulate disturbance
  • Large inertial disc is actuated by a DC motor
  • High resolution encoder measures the disc tilt angle
  • Easy-connect cables and connectors
  • Fully compatible with MATLAB®/Simulink® and LabVIEW™
  • Fully documented system models and parameters provided for MATLAB®, Simulink®, LabVIEW™ and Maple™
  • Open architecture design, allowing users to design their own controller
Motor current-torque constant 0.02 N.m/A
Motor armature resistance 5.3 Ω
Motor armature inductance 0.580 mH
Motor nominal input voltage 12 V
Armature inertia 1.4 x 10-6 kg.m²
Operating current 0.23 A
Flywheel radius 0.0508 m
Flywheel mass 0.8 kg
Flywheel inertia about spin axis 1.0323 kg.m²
Gyro module inertia about input axis 0.002 kg.m²
Spring stiffness 1.9089 x 10³ N/m

Topics included in the Quanser-developed courseware:

Modeling Topics

  • First-principles derivation
  • Transfer function representation

Control Topics

  • Observer design
  • PID
The Gyro/Stable module can be also used to teach other topics that are not included in the Quanser-developed courseware.

To set up your Gyro/Stable Platform workstation, you need additional components. Quanser engineers recommend:

for MATLAB®/Simulink® users for LabVIEW™ users
1x SRV02 Rotary Servo Base Unit 1x SRV02 Rotary Servo Base Unit
1x Q2-USB data acquisition device¹ 1x VoltPAQ-X1 linear voltage amplifier
1x VoltPAQ-X1 linear voltage amplifier Quanser Rapid Control Prototyping toolkit software
QUARC real-time control software and one of the following options:
  - 1x NI myRIO with 1x Quanser Terminal Board for NI myRIO
  - 1x NI CompactRIO controller² with 1x Quanser Q1-CRIO module
  - 1x NI M- or X-series data acquisition device³ with 1x Quanser NI Terminal Board

¹ alternatively, you can use Q8-USB, QPIDe or any equivalent NI DAQ device supported by QUARC
² NI cRIO-9074, or NI cRIO-9024 with cRIO-9113 or cRIO-9114 chassis
³ NI DAQ device must be supported by Quanser RCP toolkit. Alternatively, you can use Quanser Q2-USBQ8-USB, or QPIDe

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