Inverted pendulum is an example of naturally unstable system. In order to stabilize an inverted pendulum, a proper controller should be used. One of the famous controllers is PID. PID controller can be analog (consist of several operational amplifiers) or digital. In this book, a microcontroller is used as a digital PID controller. The real PID formula contains a differentials equation. An 8-bit microcontroller is not fast enough to calculate such formula within a short time (less than 10ms). Therefore, the formula should be first simplified; hence, the microcontroller can perform the computation in a tight timing. The actuator for this inverted pendulum is a DC motor. The speed of the motor is controlled using PWM (Pulse Width Modulator).
The main aim is the stabilization of inverted pendulum by making an economical structure. This is done by designing an inverted pendulum structure, control mechanism and motor driving circuitry. The other main focus is to enable horizontal motion of pendulum while being oscillating about its axis. Conveyor mechanism is used to fulfill that requirement.The last objective is to create a Personal Computer (PC) based Graphical User Interface (GUI) and inter-communicating hardware using a microcontroller. The GUI design must provide a convenient interface with the hardware which will allow the user to set the position of pendulum and also to plot its response.
An inverted pendulum is a simple pendulum held at upright position. A simple pendulum has two equilibrium points: when centre of gravity (CG) of pendulum is right below the pivot point (stable equilibrium) and when CG of pendulum is right above the pivot point (unstable equilibrium). Balancing a simple pendulum at unstable equilibrium point describes the inverted pendulum stabilization problem. Expected complexities while solving this problem include different variations, like commanding the motion of the cart while keeping the pendulum erected (stable). Among the major practical implementation of inverted pendulum is rocket or missile guidance, which is based on thrust actuation at the bottom of the vehicle.
-- To implement speed control of induction motor. -- To implement closed loop volt per hertz technique based speed control of induction Motor using Matlab Simulink. -- To implement the above proposed model using Microcontroller (8051) -- This type of drive is suitable for applications which do not require high levels of accuracy or precision, such as pumps and fans. -- Low cost because there is no feedback device, the controlling principle offers a low cost and simple solution to controlling economical AC induction motors.
Intelligent Ventilation System(IVS) is an environment friendly product for BTS rooms. In the era of electricity crisis, this Microcontroller based control system not only reduces the consumption of power in BTS rooms but also minimizes the emission of Carbon-di-Oxide from Air Conditioner(AC)of a BTS room. The whole controlling is done in this project by a PIC Microcontroller IC 16F877A. So IVS is a Microcontroller based electronics device that maintains the overall environment of a BTS room by controlling a Fan unit, a Filter unit and an AC by observing the room temperature, room humidity and battery voltage level of a BTS room.
This project is about design and implementation of a single phase fully controlled bridge rectifier with digital control using PIC microcontroller. In order to advance in the control of thyrirstors is presented this type of control which is realized through a microcontroller of low gamma. In addition in this work is also presented the design of an analog control of type cosine with the purpose of comparing both circuits of digital control an analog cosine control. This work focuses on the control of thyristors through an algorithm of control designed in embedded C language and implemented on PIC microcontroller of low gamma.
The research presented examines the construction of a fuzzy logic controller for complex nonlinear system by control system decomposition into hierarchical fuzzy logic sub-systems. Evolutionary algorithm based methods are proposed to determine the control system for the hierarchical fuzzy system (HFS). Different HFS topologies for a given dynamical system (such as the inverted pendulum system) are investigated. For the inverted pendulum system, a single layer, two layered, three layered, and four layered HFS, with different variable input configuration is investigated. Effects of different input configurations on controller performance are examined and discussed. A new evolutionary algorithm based compositional method is proposed to control system over the whole set of user-defined initial conditions. The method addresses directly the problem of controlling the dynamical system from specific, user-defined initial conditions. The multiobjective evolutionary algorithm (MOEA) based compositional method is developed and tested on the example of the inverted pendulum system.
This book devotes towards the physical realisation of prototype Design, Fabrication, Testing and control of prototype single phase Static Var Compensators (SVC).Prototype working model of single phase SVC being designed and fabricated in the laboratory. Single Machine Load Bus (SMLB) or Single Machine Single Bus (SMSB) Test system have been developed in the laboratory and tested without and with controller in open loop and closed loop modes (using microcontroller). A single machine single load system (SMSL) is setup in the laboratory with an Alternator feeding a single phase Induction motor. In the first case the impact of SVC on bus voltage with open loop mode of control is observed. Secondly an automatic control circuit is implemented using LPC 2148 Microcontroller. Test system is tested with automatic control circuit and results have been presented.