Hydraulic actuator and method for realizing positioning control and position feedback thereof
A hydraulic actuator and actuator technology, applied in the direction of fluid pressure actuators, fluid pressure actuator system components, mechanical equipment, etc., can solve the problem of low stable speed of oil pumps, non-continuous operation, real-time tracking, and low positioning accuracy etc. to achieve the effect of reducing noise, improving anti-interference performance and reducing internal resistance of power supply
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Embodiment 1
[0089] Embodiment 1: A hydraulic actuator
[0090] like Figure 1 ~ Figure 2 As shown, the hydraulic actuator includes a hydraulic cylinder assembly I, a hydraulic system II and a control system III, and the hydraulic cylinder assembly I, hydraulic system II and control system III are installed together through a connecting bracket 1;
[0091] like image 3As shown, the hydraulic cylinder assembly I includes a single-acting oil cylinder 3, upper clevis 4, cylinder head 5, front sealing plate 6, cylinder barrel 7, piston 8, oil pipe 9, valve seat 10, air pipe 11, lower end cover 12. The magnetostrictive displacement sensor 13 and the lower earring 14; the upper earring 4 and the piston 8 are connected by threads, the front sealing plate 5 is used for sealing and guiding, the lower end cover 12 is welded together with the cylinder, and the magnetostrictive displacement sensor 13 is installed on the lower end cover 12, and its measuring rod passes through the lower end cover an...
Embodiment 2
[0120] A method for positioning control and position feedback, which uses the hydraulic actuator described in Embodiment 1 of the present invention to realize positioning control and position feedback. The hydraulic actuator includes a hydraulic cylinder assembly I, a hydraulic System II and local closed-loop control system III;
[0121] Hinge the lower earring 14 end of the single-acting hydraulic cylinder 3 of the hydraulic actuator hydraulic cylinder assembly I with the ground anchor, and hinge the upper earring 4 with the head of the pull-down cable connected to the active node of the cable net. According to the position and speed commands issued by the host computer, The actuator overcomes the internal force of the cable net to generate the pull-down cable force, and changes the distance between the ground anchor point and the end of the pull-down cable at the active node of the cable net by changing the displacement of the telescopic rod, thereby adjusting the position of...
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