Trajectory sensitivity analysis of first order and second order on position control system of highly integrated valve-controlled cylinder

Review of fluid and control technology of hydraulic wind turbines

“…In 2009, Chen and Zhou [19] from Lanzhou, China, proposed a strategy for increasing the size of variable pump between the gearbox and the generators in hydraulic wind turbines; however, the gearbox mechanism was retained. In 2012, the team of Professor Kong from Yanshan University, China, built a hydraulic wind turbine simulation platform, which verified the speed and power control theories of hydraulic wind turbines [20][21][22][23][24]. In summary, several countries have not in the recent past proposed theories on hydraulic wind turbines, constructed actual hydraulic wind turbines, built experimental prototypes, and/or developed initial production.…”

“…In 2007, an energy equipment company in China introduced a set of hydraulic wind turbine technologies from Nordwind Company in Germany, but no report is available. In 2013, Professor Kong from Yanshan University, China, proposed a speed control for hydraulic wind turbines, established the hydraulic wind power equipment control model, and verified it experimentally [24]. In 2016, Zhang et al [29] further optimized the control model and obtained a more accurate and efficient control system.…”

“…Indirect feedback flow can be utilized to realize closedloop speed control directly for steady-speed control. On this basis, the output speed can be adjusted to control the generated power [24].…”

Parameters Sensitivity Analysis of Position-Based Impedance Control for Bionic Legged Robots’ HDU

“…The contrast curves are shown in Figures 12-15. [15,16] outer loop. Proportional gain P K and integral gain i K are control parameters of the position control inner loop.…”

“…Because of space limitations, only one working condition (bias: 1500 N, amplitude: 1000 N, frequency: 2 Hz) is studied. The first-order and second-order trajectory sensitivity analysis methods researched in our previous works [15,16] are adopted to analyze the position variation when the four parameters increase 10% to 20%. The contrast curves are shown in Figures 12-15.…”