Klaschka controller Germany Klaschka model Klaschka price

Klaschka controller feeds back part or all of the control system output to the system input through specific methods and devices, compares the feedback information with the original input information, and applies the comparison result to the system for control to prevent deviation from the set target. Closed-loop control systems utilize negative feedback. It is an automatic control system composed of a closed loop formed by the signal forward path and the feedback path, also known as a feedback control system. Closed-loop control systems have the following characteristics in control: since the feedback quantity of the output signal is compared with the input quantity to generate a deviation signal, the deviation signal is used to control or regulate the output quantity, so the system output can automatically track the input quantity, reduce tracking error, improve control accuracy, and suppress the influence of disturbance signals. In addition, closed-loop control systems composed of negative feedback have other advantages: the introduction of the feedback path makes the system insensitive to changes in component parameters in the forward path, thereby lowering the precision requirements for components in the forward path; the feedback action can also make the entire system insensitive to certain nonlinear effects.

Klaschka controller introduction

The controller uses microelectronics technology to perform various control functions. Under the action of input signals on site, it controls the actuators on site to operate according to certain rules based on the pre-input program. According to user usage methods and characteristics, programmable controllers can be divided into two completely different markets: project-based market and OEM market. In the main application projects of programmable controllers, they are mainly applied in industries such as metallurgy, automotive, municipal, and electric power; in the OEM market, programmable controllers are mainly applied in traditional industries such as textile machinery, packaging, and machine tools. The most basic and widespread application is sequential logic control, used to replace relay control systems to achieve logic control and sequence control. It can be used for single-machine control or multi-machine control, as well as for the control of automated production lines. PLC controls the mechanical moving parts to perform corresponding operations based on operation buttons, limit switches, and other command signals given on site.

Klaschka controller applications

An automatic control system that includes power amplification and feedback, causing the value of the output variable to respond to the value of the input variable. After the CNC device sends out command pulses, when the command value is sent to the position comparison circuit, if the worktable has not moved, i.e., there is no position feedback signal, the command value causes the servo drive motor to rotate, driving the machine tool worktable to move through transmission elements such as gears and ball screw nut pairs. The position measuring element installed on the machine tool worktable measures the actual displacement of the worktable and feeds it back to the comparator of the CNC device to compare with the command signal, and uses the compared difference for control. If there is a difference between the two, it is amplified by the amplifier, and then controls the servo drive motor to rotate until the difference is zero, at which point the worktable stops moving. This system is called a closed-loop servo system.

Klaschka controller advantages

In a feedback control system, regardless of the reason (external disturbance or internal system changes), as long as the controlled variable deviates from the specified value, a corresponding control action is generated to eliminate the deviation. Therefore, it has the ability to suppress interference, is insensitive to changes in component characteristics, and can improve the response characteristics of the system. However, the introduction of the feedback loop increases the complexity of the system, and improper gain selection may cause system instability. To improve control accuracy, when disturbance variables can be measured, disturbance-based control (i.e., feedforward control) is often used simultaneously as a supplement to feedback control to form a composite control system. Generally speaking, open-loop control systems have a relatively simple structure and lower cost. The disadvantages of open-loop control systems are low control accuracy, poor ability to suppress interference, and sensitivity to changes in system parameters. They are generally used in occasions where external influences can be ignored or precision requirements are not high, such as washing machines, stepper motor control devices, and water level regulation systems. In closed-loop control systems, whether it is a change in the input signal, the influence of interference, or a change in internal system parameters, as long as the controlled variable deviates from the specified value, a corresponding action will be generated to eliminate the deviation. Therefore, closed-loop control has strong anti-interference ability. Compared with open-loop control, the system is insensitive to parameter changes, allowing less precise components to be used to construct a more precise control system, achieving satisfactory dynamic characteristics and control accuracy. However, adopting feedback devices requires adding components, resulting in higher costs and increased system complexity. If the structural parameters of the system are not selected appropriately, the control process may become very poor, even leading to unstable situations such as oscillation or divergence. Therefore, how to analyze the system and reasonably select the system structure and parameters to obtain satisfactory system performance is a problem that automatic control theory must study and solve.

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