Process management

The most basic concept of modern organization management
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The process concept is one of the most basic concepts of modern organization management. In ISO9000:2000, the process is defined as: input Convert to output Activities that are interrelated or interacting with each other. "
Chinese name
Process management
Foreign name
process managerment
Category
Management Measures
Certification
ISO9000“2.4
Related literature
Quality Assurance System Basis and Terminology

Process concept

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The task of the process is to transform input into output. The condition of transformation is resources, usually including people, machines, materials, methods, environment and detection. Value added is the expectation of the process. In order to obtain stable and maximum value added, the organization should plan the process, establish process performance measurement indicators and process control methods, and Continuous improvement And innovation.

Process approach

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It is pointed out in the "process method" that: systematically identify and Management organization The applied processes, especially the interaction between these processes, are called "process methods". In order to make the organization operate effectively, the organization should use process methods to identify and manage many interrelated and interacting processes, and conduct continuous control and continuous improvement on the connection, combination and interaction between processes to enhance Customer satisfaction And process.
ISO9000 : The 2000 family of standards also proposes a process based quality management system The implementation of ISO9000 family standards is a basic method for effective process management. among ISO9001:2000 It is the most basic standard, focusing on customer satisfaction; and ISO9004 : 2000 is a trend Performance Excellence Model Focus on the performance improvement of the organization and make customers Related parties satisfied. stay Performance Excellence Evaluation Criteria Among the various categories of ISO 9000 standards, process management is the most relevant category. But it should be noted that, ISO9001 The process management in the criteria for performance excellence evaluation aims at all key points Stakeholders Comprehensive satisfaction, it is the implementation of strategic target And strategic planning, implementation Continuous improvement And innovation to improve the overall performance of the organization, create balanced value for stakeholders, and then perform Organizational mission And implementation organizational vision Its pursuit of excellence, effectiveness, efficiency and response to changes in the dynamic competitive environment Agility The pursuit of, should be higher than the requirements of ISO9000 family standards.
Process management PDCA cycle
Process management refers to the use of a set of practical methods, technologies and tools to plan, control and improve the effect, efficiency and adaptability of the process, including process planning Process implementation , process monitoring (inspection) and Process improvement (Disposal) four parts, namely PDCA cycle Four stages. PDCA (plan do check act) cycle is also called Deming Loop, yes Quality Assurance Master Dai Ming is here Shewhart Statistical process control Based on the thought.
1 Process planning (P)
·Identify the organization's Value creation Process and Support process , from which the main value creation process and key support process are determined, and the objects of process output are defined, that is, the customers and other interested parties of the process.
·Determine the requirements of process customers and other interested parties, and establish measurable processes Performance objectives (i.e. process quality requirements).
·Based on process requirements, integrate new technologies and obtained information to conduct process design or redesign.
2 Process implementation (D)
·Make the process personnel familiar with the process design and implement it in strict accordance with the design requirements.
·Timely adjust the process within the flexible scope of process design according to the changes of internal and external environment and factors and the information from customers and suppliers.
·Control the process according to the information obtained from process monitoring, such as application SPC (Statistical Process Control) control process The key characteristics of the output (product) make the process stable and controlled and have sufficient Process capability
·Implement the improved process according to the results of process improvement.
3 Process monitoring (C)
·Process monitoring includes the monitoring during and after the implementation of the process, which aims to check whether the process implementation follows the process design and achieve the process performance goals.
·Process monitoring can include: product design In process review Verification and validation , process inspection and test during production, Process quality audit , process factors, process output sampling measurement for SPC implementation and quality improvement, etc.
4 Process improvement (A)
Process improvement is divided into two categories: "breakthrough improvement" refers to major changes to existing processes or replacing existing processes with new ones (i.e. innovation); And“ Gradualness Improvement "refers to the continuous improvement of the existing process, and it is an improvement of the way of combining the best with the best.".

Method characteristics

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process management It has a philosophy different from the traditional management method, and its basic idea is: from the "horizontal" perspective, the enterprise is regarded as a product development, production, sales, procurement Plan management , quality management cost control customer management and personnel management etc. Business process Process composed in a certain way Network system ; according to Business objectives , optimal design Business process, to determine the connection mode or combination mode between business processes; Focusing on business process, develop Resource allocation Programme and organization design scheme And formulate solutions for enterprise information flow, logistics Capital flow and Workflow management Problem plan; Comprehensive application of information technology network technique , Planning and control technology and Intelligent technology And other technologies to solve process management problems.
stay Enterprise applications The basic steps of the process management method can be roughly summarized as follows:
(1) According to market demand and Enterprise resources Feature formulation Business objectives , establish Business objectives System.
(2) Identify various business processes with specific business functions, identify the relationship and interaction between business processes, identify key business processes, and analyze business processes.
(3) According to the business objective system of the enterprise, from top to bottom, the high-level process is first followed by the low-level process, and the business process optimization design is carried out to simplify, adjust, and properly merge the operation units (or operation units, processes, links) in the business process, and determine the connection mode of each business process; Define and describe each business process, determine the functional objectives, inputs and outputs of the business process, and determine the key business processes as the management focus; Establish enterprise business on this basis process model
(4) From the perspective of information, business process is regarded as the process of information collection, transmission and processing, and information technology is applied to design and solve the enterprise according to business process information transmission And solutions to problems.
(5) Based on business process network system Organization structure design And system design.
(6) Need to run according to business process Reasonably allocate resources
(7) Apply planning and control technology, and formulate according to the needs of business process operation Business plan And control scheme, to conduct business process operation feedback control And coordination.
(8) With the main goal of improving the performance of business processes, Continuous improvement Process.
As can be seen from the above management Different, the process management method is based on system theory information theory and cybernetics As the theoretical basis, it has the following characteristics:
(1) With system theory For guidance, from the perspective of system, the enterprise is regarded as a process network system composed of product R&D, production, sales, procurement, quality management and other business processes in a certain way from a horizontal perspective; Think of each business process as a process with specific functions and objectives, input and output Subsystem Enterprise system is composed of several business process subsystems in a certain way; application Systematic approach Solve the information flow, logistics and Workflow management Problems; Pay attention to the logical connection and interaction within and between business processes operation flow Optimal combination of operation units in;
(2) Using information theory, the internal processes of enterprises are regarded as a process of information collection, processing, storage and transmission, and information technology is applied to solve business processes management information Transmission and processing problems.
(3) Application Cybernetic method , regarding the business process of the enterprise as a controllable process process control system , using feedback control and other control methods to solve the control problem of enterprise business process system.
(4) Pay attention to the refinement of management, that is, to each business process, each operation unit (or operation unit, operation), and each business affected Process operation Input factors of;
(5) Pay attention to the comprehensive application of management technology, information technology and other technologies.
Nowadays, computer information technology and network technology are developing rapidly and multidisciplinary Knowledge accumulation And multiple technologies Organic combination Under the technical background of management model and management style Great changes are taking place. The new management model that comprehensively uses management technology, computer information technology and other technologies will gradually replace the traditional management model, the enterprise's information processing ability and Business plan And control ability It will improve rapidly. These macro background factors will greatly facilitate the process management Application in enterprises.

content validity

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The author of Process Control Tsinghua University Industrial instrument and automation The summary of years of professional teaching is the basis of the handouts used over the years Superior meridian The book is revised many times and includes the part of the author and his colleagues in the field of process control Scientific research achievements The whole book systematically expounds the simple and Complex control system The structure, principle, design, analysis and evaluation of process control system And try to start from the characteristics of the whole production process Comprehensive design And preferred. On this basis, several mature advanced process control strategies are also introduced, and efforts are made to reflect the new development of process control in recent years. Starting with the basic concepts of mathematics and physics, the book expounds the essence, characteristics and mastery of process control problems system design And the basic method of analysis. The whole book is divided into 15 chapters, each chapter has thinking problems and exercises.
Process Control can be used as a textbook for automatic control and related majors in colleges and universities scientific and technical personnel reference resources.

Edit recommendation

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Process Control: series of teaching materials of Information, Control and System

catalog

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introduction
I Production process automation Development overview and trend of
2、 Tasks and requirements of process control
reference
1-2 Dynamic characteristics of controlled object
1、 Basic concepts
2、 Dynamic characteristics of some simple controlled objects
3、 Characteristics of dynamic characteristics of industrial processes
1-3 Process mathematical model and its establishment method
1、 Expression form of process mathematical model and requirements for model
2、 Two basic methods of establishing process mathematical model
3、 Several commonly used classical identification methods
Chapter II Proportional integral differential control And its regulating process
2-1 Basic concepts
2-2 Proportional adjustment (P adjustment)
1、 The action law of proportional adjustment, Scale band
2、 The characteristic of proportional regulation is differential regulation
3、 Influence of proportional band on regulation process
2-3 Integral adjustment (I adjustment)
1、 Integral regulation action law
2、 Characteristics of integral regulation, Zero error adjustment
3、 Influence of integration speed on regulation process
2-4 Proportional integral regulation (PI regulation)
1、 Action law of proportional integral regulation
2、 Proportional and integral adjustment process
3、 Integral saturation phenomenon and measures against integral saturation
2-5 Proportional integral differential regulation( PID adjustment )
1、 Characteristics of differential regulation
2、 Proportional differential regulation law
3、 Characteristics of proportional differential regulation
4、 Regulation law of proportional integral differential
Chapter III Simple Control System Setting
3-1 Basic requirements for control system setting
3-2 Attenuation frequency characteristic method
1、 Attenuation frequency characteristic and Stability criterion
2、 Attenuation frequency characteristic method setting Regulator ginseng
3-3 Engineering setting method
1、 Dynamic characteristic parameter method
2、 Stable boundary method
3-4 Self tuning of regulator parameters
4-1 Pneumatic control valve Structure of
1、 Pneumatic actuator, hall mechanism
2、 Valve
4-2 Control valve discharge coefficient
1、 Definition of discharge coefficient and Physical meaning
2、 Flow coefficient Calculation formula
4-3 Structural characteristics and flow characteristics of control valve 1
1、 Structural characteristics of regulating valve
2、 Control valve Flow characteristics
4-4 Pneumatic control valve model selection
1、 Selection of structural form of regulating valve
2、 Selection of air opening and air closing modes of regulating valve
4、 Determination of regulating valve diameter
Chapter I Summary
Thinking questions and exercises
reference
Chapter V Cascade control system And ratio control system
5-1 Concept of cascade control system
5-2 Analysis of cascade control system
Some Problems in the Design and Implementation of 5-3 Cascade Control System
1、 Design of secondary circuit
2、 Main and auxiliary circuits working frequency Selection of
3、 Measures to prevent integral saturation of regulator
5-4 Selection and setting method of regulator
1、 Stepwise approximation
2、 Two-step setting method
1、 Calculation of ratio coefficient
2、 In ratio system nonlinear characteristic
3、 Setting of ratio system
4、 Common ratio control system
Chapter VI Utilization Compensation principle Improve the control quality of the system
6-1 Overview
1、 Basic concepts
3、 Dynamic feedforward control
6-3 Large delay system
1、 Overview
2、 Use compensation principle to overcome the influence of large delay
3、 Several improved schemes of smith predictor
6-4 Nonlinear gain Compensation system
1、 Overview
2、 Compensation of static nonlinear characteristics of objects
7-1 Relative gain
1、 Definition of relative gain
2、 Method for obtaining relative gain
3、 Relative Gain matrix characteristic
7-2 Variable matching and tune parameter Setting
1、 Pairing between variables
II control loop Coupling effect between and its setting
3、 Influence of dynamic coupling between loops
7-3 Design of decoupling control system
2、 Diagonal matrix method
3、 Unit matrix method
7-4 Implementation decoupling Some problems of control system
I Decoupling system Stability of
2、 Partial decoupling
3、 Simplification of decoupling system
Chapter II Summary
Thinking questions and exercises
reference
Part III Process computer control system
8-1 Direct digital control system Basic concept and composition of
8-2 signal acquisition digital filtering And data processing
1、 Signal acquisition
2、 Digital filtering
3、 Data processing
8-3 PID of DDC Arithmetic
I PID control Arithmetic
2、 Improvement of PID control formula
8-4 Setting of digital PID regulating parameters
1、 Extended critical proportional band method
2、 Expansion response curve method
8-5 Example of DDC application
I Beer fermentation process Requirements for control
2、 Composition of control system
3、 System hardware
9-1 Overview
2、 System configuration
9-3 Algorithms in Distributed Control Systems
I Supervision and control Layer algorithm
II Planning and scheduling Layer algorithm
appendix
Chapter III Summary
Thinking questions and exercises
reference
Part IV Control System of Typical Device
Chapter X thermal power plant Automatic control of large unit
10-1 Production process of large unit
And its requirements for control
1、 Output control of unit
2、 Control of boiler combustion process
3、 Boiler Steam drum Water level control
10-2 Unit output control system
2、 Steam turbine Tracking mode
3、 Turbine boiler coordination mode
4、 Example of output control system
10-3 Combustion process Control system of
1、 Dynamic characteristics of steam pressure regulating object
3、 Air supply control system
4、 Negative pressure control system
1、 Dynamic characteristics of feed water regulating object
2、 Three impulse control scheme for drum water level
III Three impulse Engineering setting of control system
4、 Cascade control system of drum water level
10-5 Steam temperature control system
1、 Dynamic characteristics of steam temperature regulating object
2、 With leading differential signal Steam temperature control system
3、 Setting of double signal steam temperature regulator
4、 Steam temperature cascade control system
5、 Example of steam temperature control
Chapter XI Rectifying tower Automatic control of
11-1 Distillation process
1、 Distillation principle
II Continuous distillation Devices and processes
3、 Basic type of distillation tower
11-2 Control objectives of distillation tower
2、 Product output and Energy consumption
11-3 Factors affecting distillation process
1、 Whole tower material balance
3、 Internal material balance
4、 Dynamic impact analysis
11-4 Selection of quality indexes of distillation tower
I Sensitive plate Temperature control of
2、 Temperature difference control
3、 Double temperature difference control
11-5 Basic control programme
1、 Press Distillation section Indicator control
2、 Press Stripping section Indicator control
3、 Control according to the quality indicators at both ends of tower top and bottom
11-6 Internal reflux control and Feed Enthalpy control
1、 Internal reflux control
2、 Feed enthalpy control
11-7 Energy saving control of distillation tower
I Product quality index "Edge clamping" control of
2、 Adopt feedforward control programme
3、 Floating tower pressure control scheme
Thinking questions and exercises
reference
Chapter V Advanced process control system
12-1 Composition of inference control system
1、 Question raising
2、 Composition of inference control system
3、 Design of inference controller
1、 There are errors in the disturbance channel model
II Control channel Model error
3、 Inference feedback control system
12-3 Inferential control with measurable output
2、 Influence of model error on system performance
3、 Adaptive inferential control
4、 Predictive inference control
12-4 Multivariable Inferential Control
1、 V-canonical structure of controller
2、 Design of V-norm controller
3、 Selection of filter array
12-5 Application examples
1、 Application examples
2、 Secondary Output Selection of
III Control function Limiting of
Thinking questions and exercises
reference
13-1 General
13-2 Basic Principles of Predictive Control
1、 Internal model
2、 Reference track
3、 Control algorithm
13-3 Predictive control method Mechanism analysis
1、 Internal model control structure method
Some problems in 13-4 predictive control
1、 System stability and Robustness
II Non minimum phase system Predictive control in
3、 Predictive Control in Large Delay Systems
13-5 Application examples
Thinking questions and exercises
reference
Chapter 14 Adaptive Control
14-1 General
1、 With controlled object mathematical model Online identification
II reference model adaptive control system
1、 Conditions for closed-loop identifiability
III pole assignment Self tuning regulator of
14-3 Reference model adaptive control system
1、 All states of controlled object can be directly obtained
adaptive control system
2、 By Object Input/output design reference model
adaptive control system
Thinking questions and exercises
reference
Chapter 15 Multivariable Modern Frequency Domain Methods
15-1 Description method of multivariable system [1]
15-3 Inverse Nyquist Array Method
3、 Some problems of using INA method
15-4 Discussion on closed-loop characteristics in INA method
15-5 Example of INA design method
1、 Generalized Nyquist stability criterion
2、 Interconnection
3、 Approximate exchangeable controller
4、 Design methods and examples
15-7 Other design methods
1、 Dyadic expansion method
2、 Sequential back difference method
15-8 Summary
Thinking questions and exercises
reference

Innovation awareness

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First, create innovative thinking in enterprises
We can help employees understand innovation and learn how to innovate through training and setting an example. How to take the first step of innovation. Let employees know corporate culture Innovation in is not an empty word, it has rich meanings.
Second, teach employees the ways and methods of innovation
Innovation is not a slap on the head, but a systematic process.
The first step is to find the goal of innovation, such as innovation and basis for solving problems cost reduction Innovation and basis of market demand Innovation and so on;
The second step is to follow up the goal of plan innovation Goal decomposition For example, if it is planned to develop new products, the decomposition objectives include determining new product development Direction, analysis of difficulties in new product development, preparation of new product development cycle, etc;
Third, establish a system for evaluating the value of innovation evaluation system
On the one hand, it enables employees to understand that innovation will bring benefits to both enterprises and individuals;
The second is to help employees judge the value of innovation and encourage employees to make innovation with high value contributions to the enterprise.
This is a win-win process. This evaluation system includes Evaluation method , incentive measures, etc.
Fourth, establish an innovative use system
For enterprises, the value of innovation is finally reflected in the use. All enterprises advocate innovation because innovation can create benefits for enterprises, such as cost savings, increased output, and improved market share Etc.
Innovation is most afraid of putting achievements on the shelf, a vigorous start, and a quiet end.
1、 Hit the enthusiasm of employees for innovation;
2、 It is not conducive to the transformation of the innovative value of enterprises and loses the original meaning of innovation.
Therefore, it is necessary to establish innovative implementation measures, so that the innovative achievements can be truly applied to practical work to bring benefits to the enterprise.