Intelligently synchronous control of multi-cylinder hydraulic pressure elevator with variable load

Since the multi-cylinder hydraulic pressure elevator is a nonlinear system suffering variable and unequal load, it is crucial to create an adaptive control strategy to control the motors to rotate synchronously with high precision. A digital adaptive synchronous control model embedded full-dimensional rotator state estimator is proposed here. States can be measured by sensors, e.g. position by inductance position sensors and speed by tachometers. The simulation result demonstrates that the proposed approach is reachable and more advanced than conventional method.