Programmable Multiplexed Tap Logic for AC Motor Control
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Solution Overview
Problem
Existing AC electric motor control systems lack flexibility in tap input combinations and require reprogramming firmware for different tap input patterns, leading to delays and increased costs.
Innovation Solution
A system and method utilizing programmable multiplexed tap input logic stored in non-volatile electronic read-write memory, allowing for modification of tap input patterns and increasing the number of available combinations without requiring new firmware, by using a motor controller with a non-volatile memory element, input mechanism, and processing element to generate and compare tap input signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If firmware reprogramming is used to change tap input patterns, then the motor control can be adapted to different applications, but the process causes delays and increased costs
Solution Approach 1:
The patent implements dynamic reconfigurability by replacing static firmware with a runtime programmable logic system. The tap input logic is stored in non-volatile memory and can be modified without reprogramming the entire firmware, allowing dynamic adaptation of tap patterns while the motor controller remains operational. This resolves the contradiction by enabling adaptability without the time penalty of firmware reprogramming.
Solution Approach 2:
The patent introduces an intermediary layer between the hardware taps and the control logic - a programmable logic structure stored in non-volatile memory. This intermediary can be reconfigured independently of the main firmware, serving as a flexible buffer that translates physical tap inputs into control signals without requiring full firmware reprogramming. This mediator enables rapid adaptation while maintaining system stability.
2Adaptability or versatility
If firmware reprogramming is used to change tap input patterns, then the motor control can be adapted to different applications, but the costs increase
Solution Approach 1:
The system enables dynamic reconfiguration of tap logic through non-volatile memory programming rather than firmware reprogramming. This reduces manufacturing costs because the hardware architecture remains constant while only the logic configuration needs to be changed, eliminating the need for expensive custom firmware development and validation for each application variant.
Solution Approach 2:
The patent changes the configurable parameter from firmware code to memory-stored logic patterns. By storing tap input logic in non-volatile memory instead of hardcoding it in firmware, the system allows cost-effective reconfiguration through simple memory programming. This parameter change enables multiple applications to use the same hardware platform, reducing per-unit manufacturing costs.
3Adaptability or versatility
If the number of taps is fixed by hardware and software, then the device complexity is reduced, but the adaptability to different tap input combinations is limited
Solution Approach 1:
The patent implements a universal tap input structure where the same hardware can support multiple different tap configurations through programmable logic. The non-volatile memory stores various tap input patterns that can be loaded as needed, allowing a single device to perform multiple different tap functions without requiring separate hardware for each configuration. This universality increases adaptability while keeping the base hardware complexity manageable.
Solution Approach 2:
The patent uses copying by storing multiple tap logic patterns in non-volatile memory that can be replicated and switched between as needed. Instead of implementing multiple separate logic circuits, the system copies the same logic structure with different parameter values stored in memory, allowing flexible configuration without proportionally increasing hardware complexity. This copying approach enables high adaptability with minimal additional complexity.
Data Source
AI summary
A system and computer-implemented method for improving controlling the operation of an alternating current electric motor using programmable multiplexed tap input logic. Programmed bit patterns and corresponding tap numbers are stored in a look-up table in a non-volatile electronic read-write memory element. Input channels are monitored for tap input signals, and an input bit pattern is formed based on the tap input signals. The input bit pattern is compared to the programmed bit patterns, and if the input bit pattern matches a particular programmed bit pattern, then a control signal is transmitted to activate the particular tap number which corresponds to the particular programmed bit pattern, thereby controlling the operation of the motor. If there is no active tap, then the motor is turned off. The programmed bit patterns and/or the corresponding tap numbers may be changed by writing to the look-up table in the non-volatile electronic read-write memory element.