Electromagnetic Actuator Control Unit for Energy Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electromagnetic actuators face challenges in efficiently controlling mechanical loads across varying conditions, including resistant forces, supply voltage, and temperature, leading to excessive energy consumption and potential malfunctions due to inadequate control laws that fail to account for all parameters effectively.
Innovation Solution
A processing unit generates a frame of periodic voltage waves with multiple rectified alternations and pulsed excitation orders, synchronized with voltage waves, to optimize energy delivery and minimize shocks during actuation, using a microcontroller and rectifier bridge for efficient control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electromagnetic actuator is sized to close under unfavorable conditions (maximum resisting forces, minimum voltage), then it can operate reliably across all conditions, but the energy sent is disproportionate and excessive under favorable conditions, inducing malfunctions such as rebounds
Solution Approach 1:
The control law dynamically adapts the energy sent to the actuator based on real-time operating conditions. By continuously monitoring parameters such as voltage, temperature, and resisting forces, the system adjusts the excitation energy to match actual needs, preventing excessive energy delivery under favorable conditions while ensuring sufficient energy under unfavorable conditions.
Solution Approach 2:
The control law modifies multiple parameters including voltage amplitude, pulse duration, and excitation timing based on operating conditions. The system changes these parameters dynamically to optimize energy delivery, reducing energy consumption when conditions are favorable while maintaining reliable operation when conditions are unfavorable.
2Use of energy by moving object
If closed-loop regulation means are used to optimize actuator operation based on measured parameters, then energy consumption can be minimized and impacts reduced, but the processing means become significant and costly
Solution Approach 1:
The actuator system performs self-diagnosis and self-regulation by monitoring its own operating parameters such as coil voltage, current, and temperature. The microcontroller processes these internal measurements to automatically adjust control parameters, eliminating the need for external sensors and complex processing systems while achieving optimized energy consumption.
Solution Approach 2:
The control law incorporates feedback from measured operating parameters including voltage, current, and temperature. The system uses this feedback to continuously optimize energy delivery and minimize mechanical impacts, achieving closed-loop control without requiring costly additional sensors or complex processing infrastructure.
3Measurement precision
If PWM type control law is used for precise regulation, then control precision is improved, but overvoltages are generated that are difficult to clip at high frequencies and require expensive bulky components
Solution Approach 1:
Instead of using high-frequency PWM modulation, the control law employs periodic voltage waves with carefully selected lower frequencies. This approach maintains precise control capability while avoiding the generation of difficult-to-manage overvoltages, eliminating the need for bulky EMC protection components.
Solution Approach 2:
The control law applies voltage pulses that are precisely timed and sized to achieve the required actuation effect without excessive energy delivery. By using multiple rectified alternations with optimized pulse timing, the system achieves precise control while minimizing overvoltage generation and associated EMC protection requirements.
4Reliability
If the actuator sends high control energy to ensure operation under all conditions, then reliability is improved, but mechanical shocks increase due to excessive acceleration and contact impacts
Solution Approach 1:
The control law incorporates progressive energy delivery and timing adjustments that prevent excessive acceleration before contact occurs. By carefully controlling the excitation pulse timing and duration, the system cushions against mechanical shocks at discontinuity points and at the end of travel, ensuring reliable operation without damaging impacts.
Solution Approach 2:
The control law dynamically adjusts energy delivery based on the actuator's position and operating conditions. By reducing energy delivery when approaching contact points and optimizing excitation timing, the system maintains reliable operation while minimizing mechanical shocks and contact impacts throughout the actuation cycle.
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 solution enables efficient actuation across a wide range of conditions, reducing energy consumption and minimizing mechanical shocks, while avoiding the need for costly closed-loop regulation and bulky EMC components.
Implementation Method 1
The function of an electromagnetic actuator is to convert electrical energy into mechanical energy
Implementation Method 2
each alternation comprising at least a first and at least a second pulsed excitation order
Data Source
Figure 1~3
Figure 4~6
Figure 7A~7B
AI summary
The unit (2) has control units (21) acting on an excitation coil (3) to displace a mobile armature (12) of an electromagnetic actuator (100) and generating a periodical voltage wave frame with adjusted alternations. Each alternation includes a first impulsive excitation order starting at a zero voltage of the alternation, and a second impulsive excitation order terminating at a zero voltage of the alternation. Electrical energy of the orders of the first alternation is lower than or equal to an electrical energy of the orders of the second alternation posterior to the first alternation.