Abstract: A smart load-sensing EHA, comprising a variable displacement hydraulic pump, a symmetrical hydraulic cylinder, a feedback module, a pressure-following valve and an execution mechanism. The symmetrical hydraulic cylinder includes a symmetrical plunger, a first cylinder and a second cylinder separated by the plunger. The variable displacement hydraulic pump includes an oil inlet and an oil outlet. An output of the feedback module is to output a greater one of pressures at the first input and the second input to the execution mechanism. The pressure-following valve is connected between the output of the feedback module and an input end of the execution mechanism to reduce an instantaneous flow input to the input end of the execution mechanism and adjust pressure at the input end thereof. The execution mechanism is to receive an output of the feedback module and generate signal for changing displacement of the variable displacement hydraulic pump.

Abstract: Disclosed are a multi-wheel aeroplane braking system based on a self-energy-regenerative braking device and a controlling method therefor. The multi-wheel aeroplane braking system based on a self-energy-regenerative braking device can comprise a controller, a self-energy-regenerative braking device assembly, hydraulic pumps, and sets of braking actuators. The controller is connected to the self-energy-regenerative braking device assembly for sending a braking instruction thereto. The hydraulic pumps are respectively connected to the self-energy-regenerative braking device assembly for feeding a high pressure oil thereto under the driving motion of the aeroplane wheels. The self-energy-regenerative braking device assembly is configured to receive at least part of the high-pressure oil fed by the hydraulic pumps and the braking instruction sent by the controller and feeding the high pressure oil to each of the braking actuators according to the braking instruction.

Abstract: An intelligent load-sensing EHA, comprising a variable displacement hydraulic pump, a symmetrical hydraulic cylinder, a feedback module, a pressure-following valve and an execution mechanism. The symmetrical hydraulic cylinder includes a symmetrical plunger, a first cylinder and a second cylinder separated by the plunger. The variable displacement hydraulic pump includes an oil inlet and an oil outlet. An output of the feedback module is to output a greater one of pressures at the first input and the second input to the execution mechanism. The pressure-following valve is connected between the output of the feedback module and an input end of the execution mechanism to reduce an instantaneous flow input to the input end of the execution mechanism and adjust pressure at the input end thereof. The execution mechanism is to receive an output of the feedback module and generate signal for changing displacement of the variable displacement hydraulic pump.

Abstract: Disclosed are a multi-wheel aeroplane braking system based on a self-energy-regenerative braking device and a controlling method therefor. The multi-wheel aeroplane braking system based on a self-energy-regenerative braking device can comprise a controller, a self-energy-regenerative braking device assembly, hydraulic pumps, and sets of braking actuators. The controller is connected to the self-energy-regenerative braking device assembly for sending a braking instruction thereto. The hydraulic pumps are respectively connected to the self-energy-regenerative braking device assembly for feeding a high pressure oil thereto under the driving motion of the aeroplane wheels. The self-energy-regenerative braking device assembly is configured to receive at least part of the high-pressure oil fed by the hydraulic pumps and the braking instruction sent by the controller and feeding the high pressure oil to each of the braking actuators according to the braking instruction.