6 results about "Pendulum system" patented technology

This invention discloses an asynchronous, non-fragile H∞ control method and system for a rotating inverted pendulum, belonging to the field of robust control technology for DC motor rotating inverted pendulums. Addressing the problems of modal asynchrony, controller gain perturbation, time-varying delay, and quantization error in DC motor rotating inverted pendulum systems, this invention proposes an asynchronous, non-fragile H∞ control framework. The main steps include: constructing a Markov jump singular perturbation system model with time-varying delay and variable quantization density; designing an asynchronous, non-fragile output feedback controller for the rotating inverted pendulum, compatible with controller gain perturbation and quantization uncertainty; and deriving the linear matrix inequality conditions through modal-dependent Lyapunov functions to ensure the system's exponential stability in finite time and to meet the preset H∞ performance index. This invention can effectively improve the robustness and stability of DC motor rotating inverted pendulums under attack and parameter perturbation scenarios.

This invention provides a temperature control device for laser ablation-driven micro-impulse measurement experiments, based on a torsion pendulum micro-impulse measurement system. The torsion pendulum micro-impulse measurement system includes a laser, a focusing lens, a displacement stage, a torsion pendulum, a displacement sensor, and a data processing system arranged sequentially. The temperature control device is located in front of the torsion pendulum and fixedly connected to the displacement stage. The temperature control device includes a low-temperature heat sink, an electric heating element, and a temperature control chip, wherein the low-temperature heat sink is shaped to not obstruct the optical path. This solution achieves temperature control of the driven sample in laser ablation-driven impulse measurement experiments without affecting the impulse measurement process of the original torsion pendulum system.

The present application relates to a kind of grooved drum loose winding machine, relate to the technical field of winding machine, including winding system, pendulum system, tension control system, rack, feeding system and microseismic system, the winding system is installed on rack, the pendulum system is rotatably installed on rack, the tension control system is installed at the end of feeding system close to pendulum system, the winding system is located at the side of pendulum system away from tension control system, the microseismic system includes microseismic support, microseismic gas supply pipe, microseismic ring and microseismic ball, the microseismic ring is installed on microseismic support by microseismic gas supply pipe, the microseismic ring is hollowly arranged, the microseismic ball slides in microseismic ring, the upper end of the microseismic ring is communicated with microseismic gas supply pipe, the microseismic ring is hung at the lower end of microseismic gas supply pipe, the microseismic ring is equipped with gas outlet at the side close to microseismic gas supply pipe, the gas outlet points to oblique upper direction, the microseismic ring is attached to pendulum system, guarantee subsequent dyeing uniform.

The utility model relates to a novel satellite inertia characteristic test platform, it includes: base, fixed mounting on the upper surface of base air float base, float setting air float rotor above air float base, fixed mounting above air float rotor adapter flange, the torsion bar of connecting air float rotor and base, fixed in air float base side surface photoelectric sensor and install in air float rotor side surface with photoelectric sensor corresponding trigger, air float base is equipped with the conical air float surface and the ring air float surface of intercommunication, and air float rotor is correspondingly equipped with matched rotor conical surface and rotor ring surface, the utility model discloses scientific and reasonable structure design has solved the problem of traditional torsional pendulum type test equipment manufacturing cost, interference torque is big, test efficiency is low, torsional pendulum system is complex, and the maintenance is inconvenient, and the deficiency of processing efficiency is solved, realizes effectively reducing interference torque, has the advantages that the sensitivity is high, stability is good, reduces the processing and application cost.

This invention discloses a data-driven event-triggered control method for an inverted pendulum system. The method establishes a data-based system representation of the inverted pendulum system, then designs the solution conditions for the data-based control gain K of the inverted pendulum system, and finally constructs two data-based event triggering conditions for the inverted pendulum system and demonstrates the effectiveness of the proposed method, effectively alleviating the problem of data-driven event-triggered control for inverted pendulum systems that cannot be modeled.