Proportional control

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

Motor DC PID System Regulator for Mini Conveyor Drive Based-on Matlab

Abstract: The goal of the research was to develop a Proportional Integral Derivative (PID) control DC motor system as a Matlab-based driver mini conveyor to discover how to regulate speed on an actual mini conveyor where certain factors that impact the research are not considered 0. The hardware configuration of the mini conveyor used hollow steel as a frame and two copies of the roller belt for the stretch belt conveyor. The PID control system used an empirical approach to get the DC motor's response system to determine the best fit of proportional gain, integral gain and derivative gain, and then implement those PID control systems using Matlab and Arduino as the tools for data acquisition. The speed sensor (Rotary Encoder) was mounted on the roller belt to accurately gain read speed. This sensor will submit data on every increasing in PWM to accurately measure the speed and control speed at the same time, based on the set points. The consequence of this work was the proportional gain values = 0.94624747, the Integral gain = 51.4023958 and the derivative gain = 0.01941504. The PID control, designed to monitor the response of motor DC speed on this research, had successfully reached set point value and decreased steady state error from 47.16 percent to 1.015188 percent (unloaded) and 2.2020751 percent (loaded) on the real response device.

Proportional control system

Abstract: This invention relates to proportional control systems and procedure, particularly of the electrical type, whereby one or more elements or quantities are to be controlled in proportion to variations of one or more master elements or quantities. An important object of the invention is to provide...

Method and apparatus for driving flow control electromagnetic proportional control valve

Abstract: A method for driving an electromagnetic proportional control valve (44E) for the flow control of a common rail system pump which enables flow rate adjustment by adjusting the duty ratio of a pulse voltage to be impressed on a solenoid coil (F) of an electromagnetic solenoid (44E). When the electromagnetic proportional control valve (44) is in an operating condition that hysteresis may occur in action, the peak value or pulse width of a pulse voltage is increased temporarily to enhance the drive power of the electromagnetic solenoid (44E) momemtarily. This process ensures a smooth operation of a piston (44C) to stabilize flow control.

Robust trajectories following control of a 2-link robot manipulator via coordinate transformation for manufacturing applications

Abstract: A common idea concerning trajectory control of robot manipulators is to tackle the motion of the end-effector. According to traditional trajectory designs, a prescribed profile in a work space is first decomposed into independent joint positions such that the success in a contouring task lies with good tracking capability of individual joints. To advance trajectory control precision without relying on high tracking performance, a contour control strategy for a robot manipulator is presented in this paper. Different from the traditional concept of trajectory control, a contour following control strategy is developed via a coordinate transformation scheme. The main advantage of the proposed control architecture is that the final contouring accuracy will not be degraded in case the tracking performance of the robot manipulator is not good enough. Moreover, using a concept of variable structure control theory, a smooth robust control algorithm is realized in the form of proportional control plus an integration term. The robustness of the control algorithm is also demonstrated. A number of experiments are conducted to demonstrate the advantage of the trajectories following control framework and validate the feasibility of the proposed controller.

A nonlinear missile guidance controller with pulse type input devices

Abstract: Presents a nonlinear missile guidance controller with pulse type control inputs for the interception of a theater ballistic missile in the exoatmosphere region. A 3D terminal guidance law is designed to eliminate the "sliding velocity" such that the relative motion between the missile and the target is restricted along the LOS. To enhance the performance of the missile guidance, a quaternion-based attitude controller is proposed. Sliding mode control and nonlinear system analysis theory are employed to design a stable pulse type control system.