The customer of Popwil’s first Dual Six Degrees of Freedom Simulation Platform is the Ocean College of Zhejiang University. This equipment is used as a testing machine to simulate the 4 grade and bellow ocean state in order to test the performance of the marine equipment worked offshore.
This Dual Six-DOF simulation platform consists of three sets of 6-DOF Stewart Platforms. The first one is the Large 6-DOF Platform which is installed on the ground foundation, surrounded by a steel plate with guardrail, worked as the main platform to fix the marine equipment needs to be tested. The second one is called the Small 6-DOF Platform which is installed in a pit 2 meters under ground beside the Large 6-DOF Platform and worked as the assistant platform to simulate another plate which has the same or different marine state. The third one is called trainning platform which is a real 6-DOF Stewart Platform but using the same controller with the small platform. It is used to training the operator who is going to operating the Dual 6-DOF Platform to do a real test.
The purpose of this dual 6-DOF platform is to test the performance of the marine equipment installed on the Large Platform which is used to do goods transportation from one ship or marine plate to another.
The 3D drawing and onsite photo of the Dual 6-DOF Simulation Platform is shown bellow with the technical specifications.
The 3D drawing of the Dual 6-DOF Simulation Platform
The onsite photo of the Dual 6-DOF Simulation Platform
Screenshot from the monitor
Technical specifications of the large platform:
Item |
Technical specification |
Type of platform |
Parallel six degree of freedom Stewart platform |
Size of the table |
3500mm × 3500mm |
Loading capacity |
Static load: 20t Dynamic load: 10t Maximum moment: 10t · m |
Displacement of the table |
X direction: ± 100mm Y direction: ± 100mm Z direction: ± 800mm |
Swing angle of the table |
Pitch: ± 35 °, Roll: ± 35 ° |
Working frequency |
0.25Hz@Z = ± 400mm, or 0.125Hz@Z = ± 800mm |
Highest frequency |
3.5Hz |
Control Method |
The equipment is under controlled by one set of POP-NI computer-electro-hydraulic servo controller to perform 6 degree of freedom dual platforms simulation of sine wave or recorded sea wave. |
Technical specifications of the small platform:
Item |
Technical specification |
Type of platform |
Parallel six degree of freedom Stewart platform |
Size of the table |
2550mm × 2550mm |
Loading capacity |
Static load: 5t Dynamic load: 5t Maximum moment: 5t · m |
Displacement of the table |
X direction: ± 100mm Y direction: ± 100mm Z direction: ± 500mm |
Swing angle of the table |
Pitch: ± 35 °, Roll: ± 35 ° |
Working frequency |
0.25Hz@Z = ± 500mm |
Highest frequency |
3.5Hz |
Control Method |
The equipment is under controlled by one set of POP-NI computer-electro-hydraulic servo controller to perform 6 degree of freedom dual platforms simulation of sine wave or recorded sea wave. |
Technical specifications of the training platform:
Item |
Technical specification |
Type of platform |
Parallel six degree of freedom Stewart platform |
Size of the table |
1400mm × 1400mm |
Loading capacity |
Static load: 2t Dynamic load: 1t Maximum moment: 1t · m |
Displacement of the table |
X direction: ± 20mm Y direction: ± 20mm Z direction: ± 100mm |
Swing angle of the table |
Pitch: ± 10 °, Roll: ± 10 ° |
Working frequency |
0.25Hz@Z = ± 100mm |
Highest frequency |
3.5Hz |
Control Method |
The equipment is under controlled by one set of POP-NI computer-electro-hydraulic servo controller to perform 6 degree of freedom simulation of sine wave or recorded sea wave. |