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There is something wrong with my device model, which always leads to mistakes in simulation, but I don't know where the mistakes are.

JQ202504092110 5 months ago

This is my PSPICE model：

.SUBCKT MEMRISTOR 1 2
Cx 3 0 1e-9 IC=0.314
Rx 3 0 1G
Vstp TIME 0 PULSE(0 1 0 1ns 1ns 1s 2s)
E_stp 4 0 VALUE { IF(TIME > 0, 0, 1) }
B_fx 5 0 V=1 - ( (0.9 * (V(3) - V(4)) ** 2 + 0.1) ) ** 10
Gx 0 3 VALUE { 1e-14 * 100 / (10e-9)**2 * I(Vsense) * V(5) }
E_Rmem 6 0 VALUE { 16e3 - V(3) * (16e3 - 100) }
Rmem 6 7 1
Vsense 1 7 DC 0
Rout 2 7 1e-12
.ENDS MEMRISTOR

This error occurred during my simulation:But I don't know what's wrong. Please help me analyze it.

ERROR(ORPSIM-16152): Invalid number: Error while converting token '-' to double value. Token can be a constant or expression

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0 oldmouldy 5 months ago

You have a B device for "B_fx" which is SPICE 3 and PSpice is SPICE 2. Since this B device is generating a Voltage, you can use an Evalue, like the other E devices, to replace the B device.
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0 JQ202504092110 5 months ago in reply to oldmouldy

When I changed B_fx to E, there was a new error：
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0 JQ202504092110 5 months ago in reply to JQ202504092110

Does this also need to be defined by value?
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0 oldmouldy 5 months ago in reply to JQ202504092110

In addition to the "B" device change, you have also changed Rmem to have be a voltage varying device which isn't supported by SPICE 2 (And PSpice). Search the Cadence Support site for modelling Voltage controlled Capacitors and Resistors for a solution.
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0 oldmouldy 5 months ago in reply to JQ202504092110

In addition to the "B" device change, you have also changed Rmem to have be a voltage varying device which isn't supported by SPICE 2 (And PSpice). Search the Cadence Support site for modelling Voltage controlled Capacitors and Resistors for a solution.
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