Proportional control

About: Proportional control is a research topic. Over the lifetime, 3756 publications have been published within this topic receiving 49050 citations.

A model based technique for the design of flight directors

Abstract: A new technique for designing flight directors is discussed. This technique uses the optimal-control pilot/vehicle model to determine the appropriate control strategy. The dynamics of this control strategy are then incorporated into the director control laws, thereby enabling the pilot to operate at a significantly lower workload. A preliminary design of a control director for maintaining a STOL vehicle on the approach path in the presence of random air turbulence is evaluated. By selecting model parameters in terms of allowable path deviations and pilot workload levels, a set of director laws is achieved which allows improved system performance at reduced workload levels. The pilot acts essentially as a proportional controller with regard to the director signals, and control motions are compatible with those appropriate to status-only displays.

Dynamic Analysis of Power Systems with Multiterminal HVDC Links and Static Compensators

Abstract: The paper presents a generalized small signal model of a multinode power system having multiterminal HVDC links and thyristor controlled static compensators This model is suitable for the application of modal control techniques for centralized dc power modulation to improve the dynamic stability of the ac-dc system. For practical implementation of the centralized controlller, proportional-plus derivative feedback of the output states has been used to shift the dominant modes to prescribed locations. Further, a decentralized control scheme based on the control of the static compensator alone and a combination of both static compensator and dc power modulation have been presented in this paper to bring out the differences between the two approaches. An eigenvalue search has been used to optimize the controller gains. Simulation results for a 3-terminal system are presented to highlight the important features of both the modal control and dc power modulation along with reactive power control schemes.

Control of DC Motor Using Proportional Integral Derivative (PID): Arduino Hardware Implementation

Abstract: The research proposes controlling DC motor angular speed using the Proportional Integral Derivative (PID) controller and hardware implementation using a microcontroller. The microcontroller device is Arduino Uno as data processing, the encoder sensor is to calculate the angular speed, and the motor driver is L298. Based on the hardware implementation, the proportional controller affects the rise time, overshoot, and steady-state error. The integral controller affects overshoot and undershoot. The derivative controller affects overshoot insignificantly. The best parameter PID is Kp=1, Ki=0.3, and Kd=0.1 with system response characteristic without overshoot and undershoot. Using various set point values, the controller can make the DC motor reach the reference signal. Thus, the PID controller can control, handle, and stabilize the DC motor system.

Dynamic model of a pneumatic proportional pressure valve

Abstract: A dynamic nonlinear model of a commercial proportional pressure valve, type Lucifer Honeywell EPP3 J-21-U-100-10, is formulated in order to simulate its behavior in time-domain under several operating conditions. The mechatronic design of the valve and its static and dynamic characteristics are analyzed carefully. Then, the modeling of the valve is carried out by taking into account its main internal devices, which are integrated all together inside the valve in order to allow the pressure control through an input electric signal. Finally, some diagrams given by a computer simulation confirm the validity of the proposed dynamic nonlinear model for this type of proportional valve.