What Is Control Logic?

The basic form of Logical Control is derived from the analysis of the operating mechanism of the controller. The control rules obtained can be described logically by pan-Boolean algebra. Logic control is performed in accordance with the laws obeyed by pan-Boolean algebra. For example, when a water heater is in use, the water heater can work only when the two conditions coexist with neither turning off nor stopping the water. This relationship can be summarized as a Boolean algebra, which is the relationship of "AND". In other words, in order to use hot water, there must be [not extinguishing fire] and "[not stopping water]" both of which are indispensable.

The basic form of control logic arises from the analysis of the operating mechanism of the controller. The obtained control rules can be described logically using pan-Boolean algebra. The stability of the system can be analyzed by a linguistic trajectory consisting of nine points on the deviation change chart. Control logic, traditional control and

The basic form of control logic arises from the analysis of the operating mechanism of the controller. The obtained control rules can be described logically using pan-Boolean algebra. Control logic is performed in accordance with the laws obeyed by pan-Boolean algebras.

There are many types of control logic, such as fuzzy control logic, basic control logic, and combination control logic. Here is a brief introduction to the basic control logic.

The basic control logic is derived from the analysis of the controller's operating mechanism of the single-loop control system in classic control theory. It is based on pan-Boolean algebra control, and is a two-dimensional control logic that controls according to the deviation and variation of the controlled parameter of the system . Pan-Boolean algebra-based control is derived from fuzzy control.It draws the logical relationship describing the system based on human control experience and intuitive thinking, and then abstracts this thinking process. It uses symbols to separate system input variables and influencing factors according to production experience. State classification is carried out. Based on the theory of pan-Boolean algebra, a set of logical expressions describing the system is obtained. Then, the logical expressions are simplified by using the formula method of universal logic diagram or universal Boolean algebra, and a simplified set of control logic rules with clear causality and obvious logical meaning is obtained. It can deal with many control problems in industrial production, especially systems with multiple variables, multiple influencing factors, and difficult mathematical models of the system. According to the 9 cases of deviation and deviation variation, 5 kinds of control rules that change with the system output around the expected value are formed, and a basic control logic is formed. Its essence is to imitate human thinking and macroscopic behavioral functions.

The basic idea of basic control logic is to use the computer to simulate human logical thinking and imitate human control behavior during the control process, to identify as much as possible the characteristic information provided by the dynamic characteristics of the control system, and determine or change the control online through reasoning. Strategies to effectively control objects that lack mathematical models. In order to better simulate human logical thinking, imitate human control behavior, and use computer technology to implement control logic, more variables must be sought to describe the dynamic characteristics of the control system.