The principle of automatic control is actually that after the machine starts, it rarely intervenes in its work manually. The machine can run the pre-arranged work order by itself. The so-called open loop means that the input does not monitor the work of the output after work, but relies on the self-check of the output to control the work.
Generally speaking, the open-loop system does not have "automatic control", but the closed-loop system does. Take the example of daily life, using electricity to boil water -- the temperature problem.
Open-loop control system: If there is no feedback loop between the output and input of the system, the output will not affect the control effect of the system, and the system becomes an open-loop control system. The original CNC machine tool feed system is an open-loop control system, which commands the computer control system and drives the stepper motor movement.
Through automatic control to optimize the setting of traffic lights, adjust the take-off and landing time of the aircraft, control the vehicle flow, etc., the smoothness and safety of traffic have been greatly improved. Let's look for traces of smart home. Automatic control theory plays an important role in the family, allowing us to have an intelligent life.
The course of learning the principle of automatic control and its application can be applied to many aspects of life, such as home automation: smart home, automatic washing machine, automatic feeder, intelligent door lock and other equipment, which can realize intelligent control and management through the principle of automatic control.
The automatic control systems in daily life include recorders, air conditioners, refrigerators, water heaters and electric blankets. The recorder automatically rewinds; in fact, its playback process is also automatic, which is a kind of program control. The air conditioner automatically adjusts the indoor temperature, humidity and other indicators. The electric refrigerator mainly adjusts the temperature automatically.
Automatic control system case: Case 1: Temperature alarm control In industrial situations, temperature is the most involved parameter. When the temperature is high, stop heating, and when the temperature is low, start heating, or finally stabilize the temperature at about 100℃. These seemingly simple temperature controls are widely used in industrial occasions.
Voice-controlled lamp. Voice-controlled lamp is a kind of voice-controlled electronic lighting device, which is composed of an audio amplifier, a frequency selection circuit, a delayed turn-on circuit and a controllable silicon circuit.
There is a storage tank. When the liquid level is below the lower limit, water needs to be poured in, and when it is higher than the upper limit, it needs to be drained out.
This is the classical control theory based on transfer functions, which mainly studies the analysis and design of linear constant systems with single input and single output. Open-loop control in the system: all manual control, most of the program control and CNC machine tools, and time program control belong to open-loop control. For example: the switch of lighting.
1. [Answer]: The open-loop control system includes: induction cooker, microwave oven, printer, etc. Closed-loop control systems include: electric refrigerators, flush toilets, rice cookers, etc.
2. For example: automatic temperature control of the air conditioner, when the ambient temperature is higher than the set temperature, the air conditioning refrigeration system automatically turns on and adjusts the room temperature to the set value. Working principle: Closed-loop control has a feedback link, through the feedback system isThe accuracy of the system is improved and the response time is shortened, which is suitable for systems with high response time and stability requirements for the system.
3. Generally speaking, the open-loop system has no "automatic control", but the closed-loop system has. Take the example of daily life, using electricity to boil water -- the temperature problem.
4. In daily life, many control systems can be understood as open-loop control systems. For example, the speed of the electric fan is determined by the inner gear and cannot be automatically adjusted according to the ambient temperature. Closed-loop control system: Feedback control system is also known as closed-loop control system. The output has a direct impact on the control effect. Working principle: Closed-loop control has feedback links.
5. The automatic water heater of the water tower is also a simple closed-loop system. When the water has reached the lower limit, the sensor informs the motor to start and pump water to the water tower;When the water is full and the upper limit is reached, the sensor controls the power to off and maintain it. A common feature of a closed-loop system is that it has feedback links, otherwise it cannot constitute a closed loop.
6. Machines with closed-loop control systems include: household refrigerators, air conditioners, rice cookers and washing machines; while machines with open-loop control systems include: ordinary lathes, flush toilets, multi-speed electric fans, dimming table lamps, and high-rise water tanks. The main judgment method should start from the definition of closed-loop control and open-loop control.
1. The automatic control system is mainly composed of four links: controller, controlled object, actuator and transmitter. Automatic controlComposition of the system Controller: At present, the controller of the control system mainly includes PLC, DCS, FCS and other main control systems.
2. The automatic control system is mainly composed of four links: controller, controlled object, actuator and transmitter. The research on automatic control technology is conducive to freeing human beings from the complex, dangerous and tedious working environment and greatly improving control efficiency. Automatic control is a branch of engineering science.
3. It consists of three parts: executive components, measurement components and control components.
How to analyze global export trends-APP, download it now, new users will receive a novice gift pack.
The principle of automatic control is actually that after the machine starts, it rarely intervenes in its work manually. The machine can run the pre-arranged work order by itself. The so-called open loop means that the input does not monitor the work of the output after work, but relies on the self-check of the output to control the work.
Generally speaking, the open-loop system does not have "automatic control", but the closed-loop system does. Take the example of daily life, using electricity to boil water -- the temperature problem.
Open-loop control system: If there is no feedback loop between the output and input of the system, the output will not affect the control effect of the system, and the system becomes an open-loop control system. The original CNC machine tool feed system is an open-loop control system, which commands the computer control system and drives the stepper motor movement.
Through automatic control to optimize the setting of traffic lights, adjust the take-off and landing time of the aircraft, control the vehicle flow, etc., the smoothness and safety of traffic have been greatly improved. Let's look for traces of smart home. Automatic control theory plays an important role in the family, allowing us to have an intelligent life.
The course of learning the principle of automatic control and its application can be applied to many aspects of life, such as home automation: smart home, automatic washing machine, automatic feeder, intelligent door lock and other equipment, which can realize intelligent control and management through the principle of automatic control.
The automatic control systems in daily life include recorders, air conditioners, refrigerators, water heaters and electric blankets. The recorder automatically rewinds; in fact, its playback process is also automatic, which is a kind of program control. The air conditioner automatically adjusts the indoor temperature, humidity and other indicators. The electric refrigerator mainly adjusts the temperature automatically.
Automatic control system case: Case 1: Temperature alarm control In industrial situations, temperature is the most involved parameter. When the temperature is high, stop heating, and when the temperature is low, start heating, or finally stabilize the temperature at about 100℃. These seemingly simple temperature controls are widely used in industrial occasions.
Voice-controlled lamp. Voice-controlled lamp is a kind of voice-controlled electronic lighting device, which is composed of an audio amplifier, a frequency selection circuit, a delayed turn-on circuit and a controllable silicon circuit.
There is a storage tank. When the liquid level is below the lower limit, water needs to be poured in, and when it is higher than the upper limit, it needs to be drained out.
This is the classical control theory based on transfer functions, which mainly studies the analysis and design of linear constant systems with single input and single output. Open-loop control in the system: all manual control, most of the program control and CNC machine tools, and time program control belong to open-loop control. For example: the switch of lighting.
1. [Answer]: The open-loop control system includes: induction cooker, microwave oven, printer, etc. Closed-loop control systems include: electric refrigerators, flush toilets, rice cookers, etc.
2. For example: automatic temperature control of the air conditioner, when the ambient temperature is higher than the set temperature, the air conditioning refrigeration system automatically turns on and adjusts the room temperature to the set value. Working principle: Closed-loop control has a feedback link, through the feedback system isThe accuracy of the system is improved and the response time is shortened, which is suitable for systems with high response time and stability requirements for the system.
3. Generally speaking, the open-loop system has no "automatic control", but the closed-loop system has. Take the example of daily life, using electricity to boil water -- the temperature problem.
4. In daily life, many control systems can be understood as open-loop control systems. For example, the speed of the electric fan is determined by the inner gear and cannot be automatically adjusted according to the ambient temperature. Closed-loop control system: Feedback control system is also known as closed-loop control system. The output has a direct impact on the control effect. Working principle: Closed-loop control has feedback links.
5. The automatic water heater of the water tower is also a simple closed-loop system. When the water has reached the lower limit, the sensor informs the motor to start and pump water to the water tower;When the water is full and the upper limit is reached, the sensor controls the power to off and maintain it. A common feature of a closed-loop system is that it has feedback links, otherwise it cannot constitute a closed loop.
6. Machines with closed-loop control systems include: household refrigerators, air conditioners, rice cookers and washing machines; while machines with open-loop control systems include: ordinary lathes, flush toilets, multi-speed electric fans, dimming table lamps, and high-rise water tanks. The main judgment method should start from the definition of closed-loop control and open-loop control.
1. The automatic control system is mainly composed of four links: controller, controlled object, actuator and transmitter. Automatic controlComposition of the system Controller: At present, the controller of the control system mainly includes PLC, DCS, FCS and other main control systems.
2. The automatic control system is mainly composed of four links: controller, controlled object, actuator and transmitter. The research on automatic control technology is conducive to freeing human beings from the complex, dangerous and tedious working environment and greatly improving control efficiency. Automatic control is a branch of engineering science.
3. It consists of three parts: executive components, measurement components and control components.
Import data for raw commodities
author: 2024-12-23 23:54Trade data for metal commodities
author: 2024-12-23 23:46International trade database customization
author: 2024-12-23 23:29Top trade data keywords for SEO
author: 2024-12-23 22:31Dairy products HS code verification
author: 2024-12-23 22:49International trade law reference data
author: 2024-12-23 21:41863.23MB
Check359.94MB
Check338.33MB
Check416.77MB
Check285.58MB
Check491.13MB
Check376.14MB
Check589.22MB
Check976.59MB
Check449.88MB
Check561.64MB
Check352.24MB
Check871.25MB
Check374.74MB
Check269.21MB
Check243.19MB
Check336.16MB
Check465.22MB
Check818.46MB
Check173.76MB
Check245.97MB
Check825.48MB
Check265.39MB
Check883.46MB
Check146.85MB
Check732.94MB
Check364.84MB
Check545.49MB
Check517.31MB
Check432.82MB
Check413.15MB
Check295.13MB
Check734.39MB
Check211.57MB
Check996.47MB
Check555.15MB
CheckScan to install
How to analyze global export trends to discover more
Netizen comments More
672 Raw materials HS code intelligence
2024-12-23 23:48 recommend
2591 Country block exemptions by HS code
2024-12-23 23:48 recommend
316 Trade data-driven cost modeling
2024-12-23 23:36 recommend
2250 Trade data for transshipment analysis
2024-12-23 22:17 recommend
2337 How to use trade data for market expansion
2024-12-23 22:13 recommend