Pneumatic Actuator Air Supply with Calculated Aeration Timing
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Solution Overview
Problem
Conventional pneumatic actuator systems require multiple switching cycles of valve units to achieve and maintain the desired pressure and force specifications, leading to inefficient use of compressed air and increased operational complexity.
Innovation Solution
A compressed air provision device calculates the optimal aeration duration for the first pressure chamber, allowing for efficient actuation by aerating only until the specified conditions are met, often with a single switching cycle of the valve unit, utilizing a switching valve without intermediate positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the first pressure chamber is aerated continuously until the actuator element reaches the specific position and is held there, then the actuator element can be positioned accurately, but compressed air is consumed inefficiently
Solution Approach 1:
The control device calculates the required aeration duration in advance based on the actuation specification and system parameters, then aerates the pressure chamber only for that predetermined time period. This preliminary calculation of the exact aeration duration needed eliminates unnecessary continuous aeration, thereby reducing compressed air consumption while still achieving the desired positioning accuracy.
2Manufacturing precision
If compressed air is supplied and discharged multiple times to fulfill pressure and force specifications, then the pressure specification can be achieved, but the number of switching cycles increases
Solution Approach 1:
The system uses dynamic calculation of the aeration duration based on real-time parameters and actuation specifications, allowing the valve unit to operate optimally with minimal switching cycles. The control device adapts the aeration time to the specific requirements, enabling pressure specification fulfillment with a single optimized aeration event rather than multiple fixed cycling operations.
Solution Approach 2:
The control device changes the parameter of aeration duration dynamically based on the actuation specification and system state, allowing the system to fulfill pressure and force specifications with optimized single or reduced-number aeration events rather than multiple fixed cycling operations.
3Reliability
If the valve unit performs multiple switching cycles to maintain pressure specification, then the pressure can be controlled, but operational efficiency decreases
Solution Approach 1:
The control device calculates the precise aeration duration in advance based on the actuation specification and current system parameters. This preliminary calculation ensures that the valve unit operates for the exact time needed to achieve and maintain the pressure specification, eliminating the need for multiple corrective switching cycles and thereby improving operational efficiency while maintaining reliable pressure control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces the amount of consumed compressed air and minimizes the number of switching cycles, enabling efficient operation while ensuring the actuation specifications are fulfilled, such as moving the actuator element to a specific position or applying the required pressure and force.
Implementation Method 1
compressed air provision device for aerating a first pressure chamber of a pneumatic actuator
Data Source
AI summary
A compressed air provision device (2) for aerating a first pressure chamber (10) of a pneumatic actuator in order to actuate an actuator element (11) of the pneumatic actuator (3) in accordance with an actuation specification, in particular a position, movement, pressure and/or force specification. The compressed air provision device (2) is configured to calculate an aeration period (bd) and to aerate the first pressure chamber (10) in accordance with the calculated aeration period (bd) in order to bring about actuation of the actuator element (11) in accordance with the actuation specification.