Dynamic Modelling of an Orientable Solar Panel System as a 2-DOF Manipulator

Lagrange principle is used to derive the dynamic equation of an Orientable Solar Panel System-OSPS. Prior to the dynamic formulation, the OSPS kinematic analysis was eased by considering the system as a 2 degrees-of-freedom open-loop serial manipulator with perpendicular revolute joints. Denavit-Hartenberg parameters let finding the transformation matrix to relate the solar panel with the fixed element was stated. Then, existing formulation about dynamics for serial manipulators was adapted to the OSPS. The explicit dynamic model was used to build a Simunlink block. Another plant was created in SimMechanics. Then, performance of both plants when using the same PID controller were compared for a typical movement of the OSPS system. Results showed agreement for both cases, suggesting that the dynamic model is suitable for further simulations and implementation

Dynamic Modelling of an Orientable Solar Panel System as a 2-DOF Manipulator

Lagrange principle is used to derive the dynamic equation of an Orientable Solar Panel System-OSPS. Prior to the dynamic formulation, the OSPS kinematic analysis was eased by considering the system as a 2 degrees-of-freedom open-loop serial manipulator with perpendicular revolute joints. Denavit-Hartenberg parameters let finding the transformation matrix to relate the solar panel with the fixed element was stated. Then, existing formulation about dynamics for serial manipulators was adapted to the OSPS. The explicit dynamic model was used to build a Simunlink block. Another plant was created in SimMechanics. Then, performance of both plants when using the same PID controller were compared for a typical movement of the OSPS system. Results showed agreement for both cases, suggesting that the dynamic model is suitable for further simulations and implementation

PID Control for a Two-Axis Orientable Solar Panel System

The control of a two degree-of-freedom Orientable Solar Panel System-OSPS was simulated for a control scheme that combines Proportional, Integral and Derivative actions with a computed torque control inner loop. The latter controller calculates the torques at the joints. Two plants of the dynamic model of the OSPS were evaluated: analytical and Simmechanics. Three case motions were simulated: random, to a sef position, and end-of-the-day cycle. Controller gains were set by using the sustained oscillation Nichols-Ziegler second syntonization method. It was found that in order to save energy along the motion the non-underdamped behavior is required. This is attained by setting the integral component gain to zero. Very small maximum theoretical position errors of the azimuth and elevation position angles suggest that the combination PD-CTC scheme is satisfactory for controlling the OSPS motion along da

PID Control for a Two-Axis Orientable Solar Panel System

The control of a two degree-of-freedom Orientable Solar Panel System-OSPS was simulated for a control scheme that combines Proportional, Integral and Derivative actions with a computed torque control inner loop. The latter controller calculates the torques at the joints. Two plants of the dynamic model of the OSPS were evaluated: analytical and Simmechanics. Three case motions were simulated: random, to a sef position, and end-of-the-day cycle. Controller gains were set by using the sustained oscillation Nichols-Ziegler second syntonization method. It was found that in order to save energy along the motion the non-underdamped behavior is required. This is attained by setting the integral component gain to zero. Very small maximum theoretical position errors of the azimuth and elevation position angles suggest that the combination PD-CTC scheme is satisfactory for controlling the OSPS motion along da