13 uppsatser
The idea to develop a platform for a PID-controller came from the need to control the temperature in an espresso machine in a more exact way than a thermostat could perform. In discussions with Syntronic AB the idea developed into PID-control for industrial use. Syntronic AB …
… is a time controlled system, while the other task is implementation of aPI-/PID-controller. A user interface is also developed and implemented. The time controlled system is an automatic horse feeder, which is used for feeding horses at certain predefined points in time. A …
… system should be implemented. Therefore it has been chosen to compare MPC with PID, that is a common and simpler method. The results from this thesis are that MPC is a method that gives more optimal and faster control. Furthermore MPC can handle different control cases much …
… in the physical model. Three different controllers have been tested, a PID controller, a model predictive controller and a controller with feedforward. The controller with feedforward gave the best result. By softening the reference signal and using feedforward a good search …
Examensarbetet syftar till att jämföra nya alternativ till olika system för användning i laborationer i reglerteknikkurser för olika studentkategorier. Det skall utredas vilket av ett antal alternativ till mjukvaruplattformar som är bäst lämpat att användas vid …
… that the components were connected properly. Then a program containing a PID controller was created in order control the ratio of silica sol and saline and also to maintain the required pressure in the system. The pump station was tested against a water tank and two methods for …
In industrial control systems PID-control remains the prevalent strategy, also for processes that would benefit from model based control. The purpose of this thesis is to evaluate whether model based control can be readily implemented in an industrial control system. To this end …
… model. Control algoritms using arm side sensors (LQ, dual-loop and PD-PID) are compared to a PID-controller that only uses measurements of motor position for feedback control. The comparison are done with respect to disturbance rejection, oscillation damping, robustness and …
… Mainly H-infinity and GIMC designs have been compared with an ordinary PID controller. Here it can be shown that both the H-infinity and the GIMC controller yields good disturbance rejection. But both the methods lack in the robustness of model uncertainty.
… theses deals with different methods for automatic tuning of the existing controller for external axis. Three methods for automatic tuning have been investigated. Two of these are based on the manuell method used today. The third method is based on optimal placement of the …
… is undertaken between predetermined waypoints. In order to steer the vehicle a PID-controller based on the error between heading and its reference value is used. The computation of the reference value is based on position and heading in comparison to the desired path. The system …
en cykel med aktiv balans
… filter for determining the angle from the vertical plane. For balancing, a PID controller was used to control the rotation of a reaction wheel, when accelerating causes a straightening torque. The operator controls the robot by selecting commands on a touchscreen which is …
… plants. The torque tables for the turbines models and the parameters for the PID-controller in the turbine governor had greater impact on the simulation results then other parameter in the models. Key word: turbine, hydropower models, power system simulation
