What are the advantages and disadvantages of hydraulic and pneumatic systems in fluid control?
1. Advantages of the hydraulic system:
1The hydraulic fluid for hydraulic control is used as the working medium, so the heat generated by the loss of power can be taken from the place where it is generated, so that the size of the component can be greatly reduced under a certain power condition;
2 From the impact of the load, the hydraulic system has mechanical rigidity, used in the closed-loop system, the positioning stiffness is large, and the position error is small;
3 Compared with the mechanical mechanism, the hydraulic actuator has higher response speed, can start, brake and reverse at high speed, and its torque-inertia ratio is also larger, so its acceleration ability is stronger;
4 hydraulic transmission is easy to achieve stepless speed regulation, with its own lubrication and other advantages.
2. Disadvantages of the hydraulic system:
1 It is easy to leak oil, which will affect the smoothness of the movement and reduce the efficiency;
3 oil is flammable and has the risk of causing an explosion;
4 The viscosity of the liquid is affected by the temperature, which makes the oil supply and the movement speed of the actuator unstable;
5 air in the oil will cause uneven running of the working mechanism;
6 In terms of the functions of mathematical operations, error detection, amplification, testing and compensation for processing small power signals, hydraulic devices are not as flexible, linear, accurate and convenient as electronic or electromechanical devices, and therefore are generally not suitable for low power parts of control systems. Adopted, mainly used in the power part of the system.
3. Advantages of pneumatic system:
1 Pneumatic control is faster and more convenient than hydraulic control;
2 The components and working medium used are low in cost and are convenient for automatic modification of existing machinery and equipment.
4. Disadvantages of pneumatic system:
1 The movement is not stable;
2 there is noise;
3 The size of the control element is large.
1. Advantages of the hydraulic system:
1The hydraulic fluid for hydraulic control is used as the working medium, so the heat generated by the loss of power can be taken from the place where it is generated, so that the size of the component can be greatly reduced under a certain power condition;
2 From the impact of the load, the hydraulic system has mechanical rigidity, used in the closed-loop system, the positioning stiffness is large, and the position error is small;
3 Compared with the mechanical mechanism, the hydraulic actuator has higher response speed, can start, brake and reverse at high speed, and its torque-inertia ratio is also larger, so its acceleration ability is stronger;
4 hydraulic transmission is easy to achieve stepless speed regulation, with its own lubrication and other advantages.
2. Disadvantages of the hydraulic system:
1 It is easy to leak oil, which will affect the smoothness of the movement and reduce the efficiency;
3 oil is flammable and has the risk of causing an explosion;
4 The viscosity of the liquid is affected by the temperature, which makes the oil supply and the movement speed of the actuator unstable;
5 air in the oil will cause uneven running of the working mechanism;
6 In terms of the functions of mathematical operations, error detection, amplification, testing and compensation for processing small power signals, hydraulic devices are not as flexible, linear, accurate and convenient as electronic or electromechanical devices, and therefore are generally not suitable for low power parts of control systems. Adopted, mainly used in the power part of the system.
3. Advantages of pneumatic system:
1 Pneumatic control is faster and more convenient than hydraulic control;
2 The components and working medium used are low in cost and are convenient for automatic modification of existing machinery and equipment.
4. Disadvantages of pneumatic system:
1 The movement is not stable;
2 there is noise;
3 The size of the control element is large.
Warning Light,Revolving Light,Rotary Beacon
Chinasky Electronics Co., Ltd. , https://www.chinacctvproducts.com