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Fig 1.

50000kN hydraulic support test bench.

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Fig 1 Expand

Fig 2.

ZY29000/45/100d Hydraulic support model.

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Fig 2 Expand

Fig 3.

Assembly model of hydraulic support and test bench.

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Fig 3 Expand

Fig 4.

Logic diagram of three-platform joint simulation.

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Fig 4 Expand

Fig 5.

AMESim hydraulic system model.

1-Motor;2-Hydraulic Pump;3-Safety Valve;4-Directional Control Valve;5-Hydraulic Bidirectional Lock;6-Hydraulic Cylinder;7-Displacement Sensor;8- Speed Sensor;9-Equivalent Mass Block;10-Force Conversion Module;11- Adams Mechanical Module;12- Simulink Control Module.

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Fig 5 Expand

Table 1.

Hydraulic system parameters.

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Table 1 Expand

Table 2.

Fuzzy rule table of fuzzy PID controller.

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Table 2 Expand

Fig 6.

ΔKp ΔKi ΔKd output surface.

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Fig 6 Expand

Fig 7.

Fuzzy PID parallel control system.

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Fig 7 Expand

Fig 8.

Fuzzy PID control module.

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Fig 8 Expand

Fig 9.

Schematic diagram of RBF neural network.

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Fig 9 Expand

Table 3.

RBF-PID Parameters.

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Table 3 Expand

Fig 10.

RBF-PID parallel control system.

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Fig 10 Expand

Fig 11.

RBF-PID control module.

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Fig 11 Expand

Fig 12.

Double-cylinder loading displacement curve.

a. RBF-PID control loading displacement curve. b. Fuzzy PID control loading displacement curve.

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Fig 12 Expand

Fig 13.

Double cylinder synchronization error of two loading schemes.

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Fig 13 Expand

Fig 14.

Stress nephogram of shield beam No. 1 loading block.

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Fig 14 Expand

Fig 15.

Stress nephogram of shield beam No. 2 loading block.

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Fig 15 Expand

Fig 16.

Hydraulic support and test bench.

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Fig 16 Expand

Fig 17.

Dual machine attitude adjustment.

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Fig 17 Expand

Fig 18.

Shield beam loading pad.

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Fig 18 Expand

Fig 19.

Hydraulic support test bench valve assembly.

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Fig 19 Expand

Fig 20.

Measurement and control system.

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Fig 20 Expand

Fig 21.

Experimental logic diagram.

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Fig 21 Expand

Table 4.

RBF-PID parameters in experiment.

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Table 4 Expand

Fig 22.

Experimental double-cylinder loading force curve.

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Fig 22 Expand

Fig 23.

Double cylinder synchronous error curve.

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Fig 23 Expand

Fig 24.

Displacement curve of experimental double cylinder.

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Fig 24 Expand