Circuit Implementation of Dynamical Systems - Lorenz Equations (Failure Analysis)
Here's is my thoughts I think that implementation might fail is because in the paper you reference, the author's use the device AD632AD multiplier while you are using the AD633JN multiplier. A quick glance through the datasheet and we can see that the AD632AD multiplier performance total error has maximum of +/-1 while the AD633JN has a multiplier performance total error has maximum of +/-2. Also the AD632 multiplier under the multiplier perfomance has a maximum Output Offset Voltage of +/-30mV while the AD633 has a maximum Output Offset Voltage of +/-50mV. It think that those differences between might be worth looking into because given the nature of chaotic system it might just be enough to modified the circuit behavior.