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We present a simple circuit to handle communication between cells of neuromorphic arrays. It allows cells to operate continuously without waiting for acknowledgement signals back from the AER (Address Event Representation) arbitration circuitry. The module also implements aging of cell petitions i.e., old petitions to access to the AER bus are automatically discarded to give priority to the more recent...
In a DC micro grid, storage units are used to balance the load-generation mismatch. Battery is used as a primary unit of storage, but it cannot meet the transient demands of the load which can cause DC bus voltage fluctuations. For this reason, an ultra-capacitor is used along with the battery to meet the transient demand of the grid. The controller used to regulate the power converter to feed power...
A new equivalent circuit model is presented to predict the small-signal characteristic of current-mode control with DCR current sensing accurately, and a simple auto-tuning method is proposed to solve the issue of time constant mismatch in DCR current sensing. The model shows that the mismatch between the current sensing RC network and the output inductor makes the output impedance deviate away from...
V2 control is a popular control architecture in point-of-load Buck converters due to its simplicity and fast transient response. V2 control with ceramic capacitor has instability issue. This paper reviews the existing solutions and their limitations are studied. A solution using output capacitor current ramp to stabilize the control loop is proposed. The analog capacitor current sensing method based...
More and all-electric aircraft (AEA) carry many loads with varied functions. In particular, there may be large pulsed loads with short duty ratios which can affect the normal operation of other loads. In this paper, a converter with spilt capacitors and a simple adaptive controller is proposed as a Voltage Bus Conditioner (VBC) to mitigate the voltage transients on the bus. The proposed converter...
With technology scaling, vulnerability to soft errors in random logic is increasing. There is a need for on-line error detection and protection for logic gates even at sea level. The error checker is the key element for an on-line detection mechanism. We compare three different checkers for error detection from the point of view of area, power and false error detection rates. We find that the double...
This paper is concerned with the design and simulation of a pulse width modulation (PWM) rectifier for three-phase Permanent Magnetic motor drive. Based on the mathematical model of PWM rectifier, the dual-close-loop engineering design with decoupled feed-forward control is applied in the 3-phase voltage source rectifier. The objective to be reached is to realize unity power factor at the input ac...
A transversal CCD filter is presented in which the sensing and the difference circuits have been integrated on the same chip. The signal to noise ratio is better than 70 dB, insertion gain is 0 dB. The sensing circuit uses a CCD function adapted specially for this purpose.
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