What does closed loop mean?

Question 1: What does closed loop mean? The difference between open-loop and closed-loop lies in whether the determination of the input signal of the controlled object is related to its output.

For open loop, the reference signal is usually given first, and then the controller and actuator directly generate the control quantity to act on the controlled object.

For the closed loop, the reference signal is compared with the output signal of the object (measured by the measuring sensor) to obtain the deviation signal, which is generated by the controller and the actuator and acts on the controlled object.

The following figure is a block diagram of the closed-loop system.

Question 2: What does closed-loop management mean? 1, closed-loop management by balanced scorecard founder Robert? Robert S. Kaplan and David? In the article "Closed-loop Management: From Strategy to Operation", David P. Norton proposed it for the first time.

2. The company establishes a closed-loop management system to integrate strategy and operation more closely. This circular closed-loop system consists of five stages.

3. Development stage

The first stage: making a strategy Before making a strategy, a company must first reach a * * understanding of the company's mission, vision and values, establish a correct thinking mode, then have a clear understanding of the company's own strengths and weaknesses, and carefully analyze the external environment and competitors to seek opportunities and deal with threats (that is, SWOT analysis). The second stage: transformation strategy. Once a strategy is formulated, managers need to translate it into goals and measures, which can be clearly communicated to all departments and employees. The third stage: after determining the strategic objectives, measurement indicators and various strategic initiatives, the planning and operation company will then formulate an operation plan and list some actions that need to be taken to achieve the strategic objectives. The fourth stage: in the process of implementing the strategy and business plan, the supervision and learning company should regularly review the business data and the relevant data of the external environment and competitors, evaluate the progress made, and determine what obstacles exist in the implementation of the strategy. The fifth stage: strategy testing and adjustment In the final stage, the company should analyze the costs and benefits of existing products and customers, study the correlation between strategy and performance, consider whether the assumptions on which the strategy is based are outdated or have problems, and adjust the strategy in time if necessary, so as to start a new round of system cycle.

Closed-loop management system is a complete management system, which can help company managers manage strategy and operation simultaneously. After defining strategic objectives, managers allocate resources according to these objectives, define the priority of operational measures, quickly determine the impact of these decisions on operations and strategies, and update their strategic objectives when necessary.

4. If you are impatient with these boring explanations and analysis, in short, it is actually the closed-loop management of planning, layout, implementation, inspection, feedback and improvement in enterprise management. In short, after each strategy is formulated, a closed management is formed, which starts and ends to ensure performance.

Question 3: What do you mean by open-loop and closed-loop cars? To put it bluntly, open loop means that ECU only collects signal data and does nothing else. The closed loop not only collects data, but also controls and adjusts the actuator according to the data.

Question 4: What does closed loop mean? It's not plc, it's CNC system. There are three kinds: semi-closed loop and open loop.

Question 5: What is the closed loop of the Internet? Closed loop is often understood as arranging all links of the whole business chain without relying on third parties, including many media. Actually, it's not like this. The number one answer captures the core of the problem, but simplifies it. When we talk about closed loop, we usually talk about O2O industry-this answer only talks about "O2O closed loop" and the extension of this concept in non-O2O industries, and does not involve other closed loop concepts such as industrial control system or product development iteration. Let's first look at a common dilemma in the O2O industry. The popular coupon model of O2O industry (such as Tintin discount and public comment): users download coupons, show them to merchants when they consume, and get discounts. Merchants also know that users are discounted from Tintin. Tintin network collects advertising fees, and it seems that everyone is very happy. However, if Tintin provides too little advertising fees and proposes to charge a transaction commission to the merchants, the problem will come: Tintin cannot know exactly how many single transactions he has contributed. Merchants can count the transaction volume, but who will be willing to give the money to others? Take-away mode (Meifan.com, Hungry): Users order food online, and the ordering network pushes the order to the restaurant by phone or SMS. However, if the reservation platform wants to be separated from the restaurant, it will be difficult. It is difficult to understand * * * only by the number of valid orders. Tonight's special hotel: users can get special hotel information at the special price tonight. After arriving at the store, the hotel will persuade users to cancel online orders with a greater discount (avoiding paying commissions). ..... The similarity of these dilemmas is that the O2O platform loses control of the process after draining users off the assembly line. It's like handing over the baton to the offline merchants completely in the relay race, and I don't even know if it's the end. Closed loop: the key to getting out of the dilemma If the last link of the user behavior process must return to the O2O platform, just as offline merchants must return the baton to the platform, and the platform has completed the last journey, then the problem will be solved. This link is called closed loop. Baidu Encyclopedia is defined as: O2O closed loop refers to the docking and circulation between two Os. ..... to guide the passenger flow to the offline consumption experience and realize the transaction. But this ... is not closed yet. To achieve a closed loop, we must return to the line from the offline. With the closed loop, the final result of each single transaction will flow to the platform, which will master and record it. And all these recorded transactions (the key is recordable) are the value of the O2O platform, which is the basis for excavating greater value: the undisputed specific transaction records ensure the bargaining power of the platform to offline merchants. The accumulated consumption records for each user form a big data foundation, which can provide accurate marketing for merchants and personalized services for users, thus further promoting the O2O cycle. Only in this way can O2O become a real O2O, rather than a simple advertising platform or classified information provider.

Question What does o2o closed loop mean? O2O closed loop refers to the docking and circulation between two O's. Online marketing, publicity and promotion should guide passengers to offline consumption experience and realize transactions. For example, the revenue-increasing platform is to connect consumption, payment, rebate, promotion and other links, and it is to be a national cross-border O2O platform.

Question: What does PID closed-loop control mean? Closed-loop control is relative to open-loop control. For a simple example, we draw a circle. If there is a gap on it, it must be an open loop. If there is no opening on it, it is a closed loop. More complicated, the closed-loop control requires that the actual value of one or several parameters be continuously fed back to the inverter, and the inverter compares the set value with the actual value, and converts the comparison result into an instruction, which is issued to the inverter for operation until the set value is completely equal to the actual value.

I don't know if you understand.

P in PID stands for: proportion; I stands for Integral；; D is different. The above are several algorithms commonly used in Danxue. PID closed-loop control is to calculate the difference between the set value and the actual value by proportional, integral and differential methods, and feed back the result to the inverter, so that the inverter can unify the set value and the measured value faster and better.

Question 8: What are semi-closed loop and full closed loop? Full closed loop means that the control output is completely controlled according to the feedback signal, and half closed loop means that only part of the control is performed according to the feedback signal.

Question 9: What does it mean to implement closed-loop management in information management? Every company will strengthen its internal management for the benefit of its own company. The so-called closed-loop management means that when a problem arises, it will be complete only if it is effectively solved, so as to prevent the problem from passing the buck and kicking the ball, and finally let it go.

Question 10: What is a closed loop? You don't know the open loop and closed loop of CNC system.

What books to read? Turn over the books by yourself. .