Drive Control via Inverted Motion Function for Periodic Imbalance
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Solution Overview
Problem
Drives with periodic non-synchronous actuators experience periodic imbalances, leading to uneven movements and disturbances in driven elements, which existing control methods fail to adequately address.
Innovation Solution
A method involving the determination of a movement pattern, conversion to a movement function, inversion of this function to create an inverse motion function, and activation of the drive using the inverted function to mitigate periodic imbalances, thereby ensuring uniform movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If periodic non-synchronous operation is used in actuators, then productivity and speed are improved, but periodic imbalances and uneven movements occur in driven elements
Solution Approach 1:
The control method applies preliminary anti-action by determining a compensation signal that counteracts the periodic imbalances before they occur. The method measures the actual movement, determines the deviation from the reference movement, and applies a compensation signal in advance to counteract the expected periodic imbalances, thereby achieving uniform driven element movement while maintaining high operational speed
Solution Approach 2:
The control method changes the control parameters dynamically by adjusting the actuator control signal based on the determined movement function and its inverse. The system modifies the control signal parameters (amplitude, phase, timing) to compensate for periodic non-synchronism, transforming the actuator operation to eliminate imbalances while preserving productivity
2Measurement precision
If feedback signals are used for control, then movement precision is improved, but system complexity increases
Solution Approach 1:
The control method implements feedback by continuously measuring the actual movement of the actuator, comparing it with the reference movement, and using the deviation to generate a compensation signal. This feedback loop enables precise movement control by adjusting the control signal based on actual performance, achieving high measurement precision through iterative correction
Solution Approach 2:
The control method applies self-service by enabling the system to automatically determine and compensate for its own periodic imbalances without external intervention. The control unit autonomously measures movement, determines the movement function, calculates the inverse function, and generates compensation signals, reducing the need for complex external control mechanisms
Data Source
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AI summary
A method for controlling a drive (10) with an actuator (20) exhibiting periodic asynchronous operation is described. The method comprises the following steps: receiving a motion pattern of the drive, wherein the motion pattern includes an executed motion and an associated drive control signal; determining a motion function of the drive based on the motion pattern, wherein the motion function represents the executed motion relative to the associated control signal; inverting the motion function of the drive to obtain an inverted motion function, wherein the inverted motion function represents the control signal relative to the executed motion; controlling the drive according to the inverted motion function, wherein a control signal for executing a predetermined motion is taken from the inverted motion function.