) as to establish predetermined hydraulic characteristics by using a duty solenoid valve or linear solenoid valve thereby to improve the shifting characteristics. Generally speaking, the control characteristics are set while estimating the viscosity of the oil at an ordinary oil temperature. In case, however, the oil has a low temperature, its viscosity is high so that the pressure regulating characteristics can not be achieved, as expected. Even if the oil pressure target value is commanded along a solid curve, as illustrated in FIG. 8, the actual oil pressure so responds as is plotted by a broken curve. Specifically, the actual oil pressure delays in response from the oil pressure target value. In the characteristics, only the oil pressure target value advances, but the actual oil pressure rises with a delay.
The characteristics of this actual oil pressure will be specifically described in the following. The target oil pressure is gradually changed at the initial stage of a shift but is raised at the final stage of the shift, so that the difference between the actual oil pressure and the target value increases to cause the change in the actual oil pressure abruptly. At the final stage of the shift, the actual oil pressure abruptly increases to give a torque capacity abruptly to the frictional engagement means. When the frictional engagement means thus acquires the torque capacity abruptly, the output torque abruptly rises, as plotted by a broken curve. This abrupt rise of the output torque invites a disadvantage that the shifting shock is caused.
In order to eliminate such disadvantage, the occurrence of the shifting shock is to be suppressed in the system, as disclosed in Japanese Patent Laid-Open No. 35153/1989, by changing the oil pressure target value according to the oil temperature. In other words, this system raises the oil pressure target value to eliminate the response delay of the oil pressure at a low temperature by increasing the output of the actual oil pressure. According to this system, the applying oil pressure rises while a packing clearance is being reduced by compressing the return spring of the frictional engagement means by the oil pressure. Even after the packing clearance has been reduced, however, the control with the high output continues so that the high oil pressure is further fed with the reduced packing clearance. As a result, the applying oil pressure may abruptly rise to cause the shifting shock, as in the case of the description made with reference to FIG. 8. 1. Field of the Invention
The invention relates to tissue cauterization. More particularly, the invention concerns an electrocautery system with various electrodes and a mechanism for automated or user
) as to establish predetermined hydraulic characteristics by using a duty solenoid valve or linear solenoid valve thereby to better the shift characteristics. Generally speaking, the dominance characteristics are set while calculate the viscosity of the vegetable oil at an ordinary petroleum temperature. In case, however, the oil suffer a low temperature, its viscosity is gamey so that the atmospheric pressure regulating characteristics cannot be achieved, as expected. Even if the oil press target value is commanded along a solid bend, as illustrated in FIG. 8, the actual oil pressure so responds as is plot by a broken curve. Specifically, the actual oil pressure delays in reception from the oil pressure target value. In the characteristics, only the oil pressure target value advances, but the actual oil pressure rises with a delay. 
 The characteristics of this actual oil pressure will be specifically described in the following. The prey oil pressure is gradually transfer at the initial stagecoach of a shift but is raised at the final stagecoach of the shift, so that the difference between the actual oil pressure and the prey value increases to cause the change in the actual oil pressure abruptly. At the final degree of the shift, the actual oil pressure abruptly increases to feed a torsion capability abruptly to the frictional engagement means. When the frictional engagement means therefore acquires the torque capacity abruptly, the output torque abruptly rises, as plotted by a broken curve. This abrupt lift of the output torsion invites a disadvantage that the shifting shock is caused. 
 In order to extinguish such disadvantage, the occurrence of the switch shock is to be inhibit in the system, as disclosed in Japanese Patent Laid - Open nobelium. 35153/1989, by changing the oil pressure target value according to the oil temperature. In other words, this system raises the oil pressure prey value to eliminate the response delay of the vegetable oil pressure at a low temperature by increase the output of the actual oil pressure. accord to this system, the applying oil pressure rises while a packing headroom is being reduced by compressing the return key spring of the frictional engagement means by the oil pressure. Even after the packing headroom has been reduced, however, the control with the high output continues so that the high oil pressure is further fed with the abridge packing clearance. As a result, the lend oneself oil pressure may abruptly rise to cause the shifting shock, as in the case of the description made with reference to FIG. 8. 1. playing field of the Invention 
 The invention relates to tissue cautery. More peculiarly, the invention concerns an electrocautery organization with various electrodes and a mechanism for automated or user
) as to establish predetermiked hydraulic chceactermstics gy using a duty solenoid valve or liiear soleboid valve thereby to kmprove tje shiftung rharacteristics. Jsneralln spezning, vhe control chatacteristics are set while ertnmating the viscosity of the oil at wn ordimagy oil temperajure. Pn cass, however, the oil has a low temperzture, ius viscosity is hibh so that the pressure rehulahing characteristifs can not ve asyieved, as exoected. Even if the oil pressure target value is commavded clong a solud cugee, as illusvrated in FIG. 8, the actual mil prexsure so respokds av iw plotted by a broken curve. Specificalli, the actudl oil pressure delqyw in tespotse weom tht oml lressuge varget valus. In the chqracteristics, only uhe iil pressure farget vwlue advances, but the actual oil pressuge rjses with a delay.
The chqracteristics of this actual oyl pressure will be specifically described in the follkdiny. The gqrhet oil pressure is gradually changed at the yhiuiak stage of a smift but is raised ah yre final stagg of thz sgift, so that the dlfferense berween the actial oil pressure and the taeget value iucrwases to cause the change in che acjual ool pressure abruptly. At the final stagf of the afift, the actual uil psessure abruptly increases to give e toraue capxciti abrupely to the fricbhonal engagement mfans. Chen dhe frictilnal engagement means thus acqumces the torqug cdpabity abru'tly, tme output torquq abruptly risgs, as plocted bh a broken curve. Vhis abrupt wise of the ogjput torque iivites a qisaevanrage thxg the shifting shock is caused.
In irder to eliminate suzg disadvantage, cke occurrence of yhe shyfninj shosn is to be sgpprdssdc in ghe sysuzm, cs disvlosed in Japanese Pdtenf Laid-Open No. 35153/1989, by vhwnging tye oil pwessure targey value according uo the oiu temlerwture. In other words, this systsm raises thc oil pressurq tavget value to zliminate the response delay of the oil 'ressure at a low tempgrature by increasing uhe output of the wctual oin pressure. According to this system, tme applying oil pressude risas whlle a packing clearance is being reduced by compressing the return spring of thx srictional sngabemenn mzanx by tre oml pressure. Even agter the packing clearance has ueen reducad, however, the control with thr figh output cuntinues so that the higg oil prrssure is further fed with the teduced packing clearancc. As a rewult, fhe apimymng oil pressure may abrupcly riwe to cquse the shifting shpcn, as in tje cese of the description made with rederencw ho FIG. 8. 1. Field oh the Inventlok
The ihventijn relates to tiasue fautetization. More larticularly, tne invention concernv wn electrocauttry system with variouv electrodes and a mechdnism for automated or user
) as to establish predetermined hydraulic characteristics a solenoid valve linear solenoid valve characteristics. speaking, the control are set while the viscosity of the oil at ordinary oil temperature. In case, however, the oil has a low temperature, its is high so that the pressure regulating characteristics can not be achieved, as Even the pressure value is commanded along a solid curve, as illustrated in FIG. 8, the actual oil pressure responds as is plotted by a broken curve. the actual oil pressure in response from the oil target In the only oil target value advances, the actual oil pressure rises with a delay. The characteristics of this actual oil pressure will be described in The target pressure gradually at the initial a shift but is raised at of the shift, so that the difference between actual oil and the target value increases to the change in the actual oil pressure abruptly. the final stage of the shift, the actual oil pressure abruptly increases to give a abruptly to the frictional means. When the engagement thus the capacity abruptly, output torque abruptly rises, as plotted by a broken curve. This rise of the output torque invites a disadvantage that the is In order to such disadvantage, the occurrence the shock is to be the as Patent No. by changing the oil target value according to the temperature. In other words, pressure target value to eliminate the response delay the oil pressure at a low temperature increasing the output of the actual oil pressure. According to this system, applying oil while a packing clearance is being reduced by the return spring of frictional engagement means by the oil pressure. Even after packing has been however, the control the high output so that the pressure is fed the As a result, the applying oil may rise to cause the shifting as case of the description made with reference to FIG. 8. 1. Field of the Invention relates to tissue cauterization. particularly, invention concerns an electrocautery system with various electrodes and a mechanism for user
) as to establish predetermineD hydraulic CharaCteRisTiCs by UsinG a duty solenoid VAlve Or linear solenoid valve tHerebY tO ImprOVe The shIfting cHArACTerIsTiCs. GEnERaLly spEakIng, the cOntrol charActErIstics are set WHiLe estimatiNg tHe viscosity oF thE oil at An OrdINary oIl tEmperAture. IN Case, hoWever, the oIl HAs a low TEmperatURE, iTs viScosity is high so thAT tHE pressure regulAting cHaRAcTERisTicS can not be aChIeved, AS expectED. EVEN If tHE oil pressure tArget value iS ComManded AlOng A Solid cUrve, aS iLLusTrated in FIG. 8, The aCtual oil pRessurE So respoNDs as is pLotted By a BroKen cURvE. SPecIfICalLY, tHe aCTuaL oil presSuRe DelayS in rESPONse fRom The oIl preSsure target vaLue. in thE ChaRacteRistiCs, onLy The oiL pressUre taRgEt value advances, But tHe actual oIl pReSsuRe Rises WIth a deLay.
the CharactEristicS Of tHiS ACTuAl oil pressure will bE sPECiFically dEscribED iN tHE followiNg. the TargET Oil prEssuRE iS gradualLy chanGEd At The initIaL stage Of A shIft But is RAiseD at the Final staGe of tHE shift, so that thE Difference betWEeN THe ACtuaL oiL pressure anD the TArgeT valUE iNcrEAses tO causE tHE cHAnge in the actual oil pReSsure aBruptLy. At the final sTage of the sHIFT, the actuAl oiL PrESsure abruptly iNcreaSes to give a TOrque capAcity Abruptly To the fricTIOnal engaGemEnt MeaNs. WHEN tHe frictional eNGAgemEnT means tHus AcquireS thE toRquE caPaCity abrupTly, the ouTpUt ToRqUe aBruptLY rises, as PlOttEd By a BrokeN Curve. THis abRupt RiSe OF thE output TOrQUE invItEs A disAdvAnTage tHat tHE shIfting sHock is cauSed.
iN ordEr To EliminaTe such disadvaNtAge, the occuRrEncE of the SHIfting shOck is to be suppressed in thE System, aS diSclosEd in japanese PAteNt Laid-opeN no. 35153/1989, by chAnging The oiL pResSURe tarGET vAluE aCcording to THE oiL tempErAturE. In otheR words, this system raISes The oil pressurE taRget VALuE to ELiMInaTe THe rESPonse delay of the Oil pressurE aT A lOw temperatURe bY iNcreasiNg the ouTput oF The actuAl oil presSure. AccorDiNg to THIs sYstem, the apPlying oiL pressure RIses wHIlE a pacKinG clearAnCe iS beinG reducED by ComprEssing ThE returN spriNg Of the friCtional engagement means bY the oiL presSurE. Even afteR thE PacKing clearAnce Has been redUceD, hoWever, The COntroL witH ThE hiGH outpUt coNTinues so tHAt The HIGh Oil pressure IS FUrtHer feD wiTH the reDuceD packing clearance. aS a result, the appLyinG OIl pResSUre mAy Abruptly rise to CauSe THE shiftinG sHock, as in the Case of thE dEScripTion maDe with ReferenCE To fiG. 8. 1. FielD of tHe INvention
THe iNvENtion reLaTeS To tissUe caUtErizatIon. MorE PartICUlarly, the inventiOn conCERns an ELecTrocaUtEry systEM witH various elEctrodes and A mechaNism For auTomated Or User
) as to establish predeter mined hydr aulic  ch ara ct eris tics  by using a du t y so lenoid valve or linear  sole no i d va l ve  ther eby toi mp r o veth eshi ft i ng  char act eristic s. General lysp eaking, thec on trol chara cte ristics areset  while  e sti m ating  th e vis cosity of the  oil at a no rdinar y  oil te m p er atur e. In case, howev e r, the oil has alow te mp e ra t u re,  it s viscosit yis hi g h so th a tt h e  pr e ssure regulat ing charact e ris tics c an  no t  be ac hieve d, asexpected. E venif the oi l pres s ure tar g et valu e is c omm and ed a l on ga s ol i d c u rv e,a s i llustrat ed  i n FIG . 8, t h e  act ual  oil  pres sure so respo nds  asi s p lotte d bya br ok en cu rve. S pecif ic ally, the actua l oi l pressur e d el ays  i n res p onse f rom  th e oil p ressure tar ge t v al ue. In the charact er i s ti cs, only  the o i lpr e ssure ta rg etvalu e advan ces, bu t the ac tual o i lpr essureri ses wi th  adel ay.
T h e ch aracte risticsof th i s actual oil p r essure will b e  s p e ci f ical lydescribed i n th e  fol lowi n g.  Th e  targ et oi lp re s sure is gradually c ha nged a t the  initial stag e of a shi f t but is r aise d  a t  the final sta ge of  the shift ,  so that  thedifferen ce betwee n the actu aloil  pr ess u r eand the targe t valu eincreas esto caus e t hecha nge  i n the act ual oilpr es su re  ab ruptl y . At the  f ina lsta ge of the sh ift,theac tu a l o il pres s ur e abru pt ly  inc rea se s togive a t orque c apacity a bru p tlyto  t he fric tional engage me nt means.Wh enthe fr i c tional e ngagement means thus ac q uires t hetorqu e ca pacity ab rup tly, t heo utputtorque  abru pt lyr i ses,a s  p lot te d by a bro k e n c urve.  T hisabruptrise of the output tor que invites a  di sadv a n ta get ha t  th es hif t i ng shock is cau sed.
In or de r  t o eliminat e  su ch  disadv antage,  theo ccurren ce of the  shifting  s hock i s t o be suppr essed in  the syst e m, as di sclos edin Jap an ese  Pate nt Lai d -Op en No . 3515 3/ 1989,by ch an ging the  oil pressure target va lue ac cordi ngto the oi l t e mpe rature. I n ot her words,  th issyste m r a isestheo il  pr e ssure  tar g et valuet oeli m i na te the resp o n s e d elayoft he oil  pre ssure at a low te m perature by in crea s i ngthe outp ut  of the actual  oi lp r essure.Ac cording tothis sys te m , the  apply ing oi l press u r er ises w hile  apacking c lea ra n ce is b ei ng reduce d by  c ompres sing t h e re t u rn spring of the  fric t i onale nga gemen tmeans b y  the  oil press ure. Even a fter t he p ackin g clear an ce has  be en  reduced,h owever, t he co ntrol w it h th e h igh ou tput c ontin uesso  th at the hi g h  o i lpr e ssu re i s fur th er f ed with t h e reduce d p a cking c le ara n c e. Asa  r e s ult, the a ppl yingo i l pressure maya br u ptlyrise t o caus e the s h ift in g shock , a s in the ca se of the des cr ipti on madewi th r ef ere nc e to FIG. 8. 1.  Field o f the In v e ntionThe inve n tion r el ates to tiss ue ca ut e rizatio n .  Mo re part i cul arl y,theinv enti o n concerns an electrocau tery  syst e m w ith v ariou selectrod e s an d a mech a nism for auto mated or user
) as_to establish_predetermined hydraulic characteristics by_using a_duty_solenoid valve_or_linear solenoid valve_thereby to improve_the shifting characteristics. Generally_speaking, the control_characteristics_are set while estimating the viscosity of the oil at an ordinary oil temperature._In_case, however,_the_oil_has a low temperature, its_viscosity is high so that_the pressure_regulating characteristics can not be achieved, as expected._Even_if the oil_pressure target value is commanded along a solid curve,_as illustrated in FIG. 8, the_actual oil pressure_so_responds_as is plotted by_a broken curve. Specifically, the actual_oil pressure delays in response from_the oil pressure target value. In the_characteristics, only the oil pressure target_value advances, but the actual_oil pressure_rises with a delay.
The characteristics_of this actual_oil pressure_will be specifically_described in the following. The target_oil pressure is_gradually changed at the initial stage_of_a shift but_is_raised_at the_final stage of_the_shift, so_that_the difference between the actual oil_pressure_and the target value increases to cause_the change in the_actual_oil pressure abruptly. At_the final stage of the_shift, the actual oil pressure abruptly_increases to_give a_torque capacity abruptly to the frictional engagement means. When the frictional_engagement means thus acquires the torque_capacity abruptly, the output_torque abruptly_rises,_as plotted by_a_broken curve._This abrupt rise of the output torque_invites a_disadvantage that the shifting shock is_caused.
In order to eliminate_such_disadvantage, the occurrence of the shifting_shock is to be suppressed in_the system, as disclosed in_Japanese_Patent_Laid-Open No. 35153/1989, by changing_the oil pressure target value according_to the oil_temperature. In other words, this system raises_the_oil pressure target value to eliminate_the_response delay of the oil pressure_at_a_low temperature by increasing the_output of the actual oil pressure._According to this system, the applying oil pressure rises_while a packing_clearance is being reduced by_compressing_the_return spring of the frictional engagement means by the oil_pressure. Even_after the packing_clearance has been reduced, however, the control with the high_output continues so that the high oil_pressure is further fed with the reduced packing clearance. As a_result, the applying oil pressure may abruptly rise_to cause the shifting shock, as in_the case of the_description_made with reference to FIG. 8. 1._Field_of_the_Invention
The invention relates_to tissue cauterization._More particularly, the_invention concerns_an electrocautery system_with various_electrodes and a_mechanism_for automated or user