³ò bÄGJc @sdZddkZddkZddkZddkZddkZddkZddkZddk Z ddk Z de i fd„ƒYZ dS(s Manipulating the Proportional-Integral-Differential Controller logs. Log format: # ULT fridge, PID pressure controller # (1) Time (sec, since 1 January 1904) # (2) P_proportional (W or nW, calculated) # (3) P_integration (W or nW, calculated) # (4) P_derivative (W or nW, calculated) # (5) P_total (W or nW, dissipated) # (6) V_DAC (mV) # (7) DAC amplitude (uint16) # (8) Gain (W/mbar) # (9) Integral time const (sec) # (10) Derivative time const (sec) # (11) p_set (mbar) # (12) p_measured (mbar) # (13) P_max (W) 2 September 2008, Lev iÿÿÿÿNtPIDLogcBsLeZdZed„ƒZd„Zd„Zd„Zd„Zd„Z d„Z d„Z d „Z d „Z d „Zd „Zd „Zd„Zd„Zd„Zd„Zhdd<dd Represents a ULT Proportional-Integral-Differential Controller log over a certain time. Two logs can be concatenated with a '&' sign 'self.device' is the controller name, two logs must belong to the same device in order to concatenate them. log format: ULT fridge, PID pressure controller [:,0] (1) Time (sec, since 1 January 1904) [:,1] (2) P_proportional (W or nW, calculated) [:,2] (3) P_integration (W or nW, calculated) [:,3] (4) P_derivative (W or nW, calculated) [:,4] (5) P_total (W/nW, dissipated) [:,5] (6) V_DAC (mV) [:,6] (7) DAC amplitude (uint16) [:,7] (8) Gain (W/mbar or nW/mK) [:,8] (9) Integral time const (sec) [:,9] (10) Derivative time const (sec) [:,10] (11) p_set (mbar or mK) [:,11] (12) p_measured (mbar or mK) [:,12] (13) P_max (W or nW) Pressure and Temperature PID Controllers think in different units for heat and controller parameter. Their string representations can be obtained from self.powerUnits() (W or nW) and self.xUnits() (mbar or mK). cCsdS(s)return number of columns in the self.datai ((((sc:\py\lib\pidlog.pyt fieldcountCscCs|idd…dfS(s/power in proportional channel (calculated) [PU]Ni(tdata(tself((sc:\py\lib\pidlog.pyt power_propFscCs|idd…dfS(s*power in integral channel (calculatd) [PU]Ni(R(R((sc:\py\lib\pidlog.pyt power_intGscCs|idd…dfS(s5power in differential channel power (calculated) [PU]Ni(R(R((sc:\py\lib\pidlog.pyt power_diffHscCs|idd…dfS(stotal power (calculated) [PU]Ni(R(R((sc:\py\lib\pidlog.pyt power_totalIscCs|idd…dfS(sDAC voltage [mV]Ni(R(R((sc:\py\lib\pidlog.pytvoltageKscCs|idd…dfS(sRaw DAC value 0-65535Ni(R(R((sc:\py\lib\pidlog.pyt DAC_valueLscCs||iƒ||dS(s^Calculate dissipated power based on DAC voltage and resistances. Always measured in microwattsi(R(RtR_heatertR_leads((sc:\py\lib\pidlog.pytpowerNscCs|idd…dfS(sPID Gain (PU/xu)Ni(R(R((sc:\py\lib\pidlog.pytgainRscCs|idd…dfS(sIntegral Time Constant (sec)Ni(R(R((sc:\py\lib\pidlog.pytT_intSscCs|idd…dfS(s Differential Time Constant (sec)Ni(R(R((sc:\py\lib\pidlog.pytT_diffTscCs|idd…dfS(s'set point for controlled parameter [xu]Ni (R(R((sc:\py\lib\pidlog.pytx_setVscCs|idd…dfS(s+measured value of controlled parameter [xu]Ni (R(R((sc:\py\lib\pidlog.pyt x_measuredWscCs|idd…dfS(spower limit [PU]Ni (R(R((sc:\py\lib\pidlog.pyt max_powerYscCsd|i|iƒfS(Ns %s Log %s(tdevicetdatespan(R((sc:\py\lib\pidlog.pyt__repr__[scCsti|iS(s?string representation of units powers are measured in [W or nW](RtxUnitsDBR(R((sc:\py\lib\pidlog.pyt powerUnits]scCsti|iS(s?string representation of units powers are measured in [W or nW](Rt powerUnitsDBR(R((sc:\py\lib\pidlog.pytxUnits^ss Pressure PIDs _PID_P.datsTemperature PIDs _PID_T.dattmbartmKtWtnWcCs•tii|ƒ}|d}tii|ƒpdSnti|dti ƒƒ}t i |dd…dfƒ|dd…dfs